Many people have argued that since the thunderbolt has not been updated with gingerbread that it will die out and be worthless. I'm here to tell you that is not the case at all.
Those with the bolt will tell you that their main problem is the battery life. This is exactly right but I have setup my phone that allows my phone to last for days without a charge. Also this does not require you to root your phone, so this will work for everyone and silence all the retarded people who keep posting that its dead. The two biggest factors is of course 4G and the display that eat the battery most.
Make no mistake about it tho, HTC implementations along with the hardware on this baby still takes the cake for flagship of Verizon.Don't be fooled by the dual core hardware, good in theory but let's face it phones aren't their yet, apps don't need two cores but more RAM would be nice.
Read this if you want your phone to live. I have reached 60+ hours unplugged, I am an IT network manager, I know stuff so leh dew it.
1. Get the extended battery. No matter what type of Android phone you have you are going to need it, especially without gingerbread. This is 4GLTE inside a laptop, do those last more than a few hours? ill answer for you, NO.
2. Disable what you don't use. This is why widgets were made to disable data, WiFi, Bluetooth, GPS, etc. when not in use. Get a new brightness widget by curvefish set it to 25% and as well as turn off the animations if you really want more improvement. Disable always-on mobile data, as well as roaming, and manage your email accounts so they sync manually. As far as location goes just use Google services, GPS standalone is a drainer.
3. Create setting shortcuts on the home screen. Add accounts and sync so you can disable auto sync and background data. Background data is only used for the market learn to disable it fools. Add a shortcut to running services as well to keep the RAM usage to a minimum.
4. A main issue always discussed is the bloatware app of blockbuster. Make sure you enter the program and disable automatic movie updates. Then go to running services and disable both instances of PVMtpservicestart and PVWmdrmService. You will have to do this every time you REBOOT but not fast boot.
5. For gods sake, don't be a fool any longer! HTC gave you some of the best widgets but use them wisely...just because you have 6 screens doesn't mean use them all. One widget app that will be loved by all is widgetsoid, extremely useful. Even the HTC clock has separate animations that can be disabled if needed.
6. NEVER by any means should you use any type of juice defender or task killer. It does more harm than good even with Android Froyo 2.2 can still manage this. Download apps such as battery indicator tht shows your battery in increments of 1% and doesn't use any resources in the background. Don't be the fool that gets apps cus they are cute and have no use, you are better than that, atleast I'd hope so..
7. Apps that will ultimately benefit you are things like GO SMS Pro ( since the stock messaging constantly lags and freezes), Astro file manager, Androidzip, LTE On and Off in order to make sure your always using your 4G data only. And of course Uninstaller by rhythm software, Poynt one of the best find anything anywhere app and definitely Documents to Go from which I'm typing on now.
8. Sounds and keyboard is up next. Many like to use haptic feedback or sounds when you click things or type. However, use one or the other it may drain a bit of battery but its not a killer. Whatever floats your boat in that one but as far sounds go try and use either sound notifications or vibrate not both at the same time. Disable all LED notifications and allow yourself the satisfaction of being free of the annoying blinking light.
9. Charging the battery. Who would have thought that it would be important, but yea fools it is. The best way is to let your battery drain down to 5%, restart, then go for a full charge. But once that green light shows up you need to unplug it or else the battery gets angry at you and will decrease the power of the charge and ultimately ruin your battery faster.
10. As far as using different themes and wallpapers it honestly doesnt matter just stay away from the live wallpapers. We all know that touching the pond and making it seem like we just threw a rock in the water can be amusing but completely pointless. It has been reported that gingerbread is coming in Q3 of this year either this month or next, but we all know that could be bs.
When all said and done you will love the improvements and the fact that you didn't have to root your phone will put your mind at ease. I just wanted to share my knowledge of this phone to others to show and prove the fact that this phone is capable you just need to be proactive. Android is a perfect OS for smartphones, Linux like qualities, and strong structures that could really last. Any questions or concerns you can always message me. I just hope some one reads this and actually tries what I have successfully configured.
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Well then I regret that 20 mins it took to write
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Save your pennies and buy an extended battery. No question. Bought one two days ago. Never even come close to this on any ROM. Finally I no longer have to carry a charger in my pocket.
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mathers53 said:
Well then I regret that 20 mins it took to write
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Click to expand...
Click to collapse
Don't get me wrong. I appreciate the effort but there are so many threads that say the same thing.
The methods are not new. There are countless videos on YouTube that say this.
In theory if you're on XDA, you know a thing or two about kernels. I can get a full twelve hours on my standard battery with the right kernel with moderate use and nothing turned off.
If people want a phone to last for days, they're being ridiculous. That's why they have home and car chargers.
Sent from Synergized Thunderbolt via the XDA Premium App
tl;dr
But according to other posts, I'm guessing it is about battery life...
As stated before, get the extended OEM 2750, I constantly pull 40+ hours out of it.
Everyone has their own version so your right its just repetition but it seems like others need a reminder. On my stock battery I can get 32 hours outta this phone. For IT guys like me its what I need from a phone like this.
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OP's rant has all been said before (maybe not in one post) and will be said again before the last Thunderbolt user leaves the forum. I guess it needs said every so often so someone doesn't forget, I suppose.
Point 9 is completely wrong. Lithium polymer batteries are nothing like nickel-cadmium batteries, and neither is the charging method. Li-on and Li-po batteries are NEVER trickle charged in an HTC device, or any device for that matter, unless they have been user-modified. It's also completely impossible to over-charge virtually all Li-on batteries because internal circuitry prevents this. An overcharged Li-on presents and extreme explosion hazard. The act over attempting to overcharge one presents an even greater risk of explosion because as the battery reaches capacity the heat generated inside the cells ramps up sharply. Some charge techniques actually use this sudden ramp up in temperature to determine a fully charged state, that's how precise it can be. But HTC devices, and cell phones in general, do not use this technique. Instead, they take advantage of another characteristic of the battery. As the battery charges, it's voltage output and resistance increase. At the fully charged point, the resistance increases sharply and this tends to be less dependent on cell temperature which makes this method more reliable. Upon reaching this point, charge current is shut off, not reduced. Charge is allowed to bleed off through discharge down to 90-95% before charge current is again applied. The only thing that really reduces the life of a battery, defined as reducing it's number of charge cycles, is storing the battery with a full or empty charge. A Li-on battery can be stored for very lengthy periods with roughly a third of a charge though.
I've jus liked the xda forums a lot cus it seemed everyone would be mature n want ideas to keep flowing. Jus tryin to help, a phone like this can't be fixed in one paragraph I thought we all knew that.
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I think it's good to know what others do to save battery life, especially on this phone. Only problem that I have is having to limit features of the phone. For example, why have such a big beautiful screen when you have to keep it dim to save juice? I'm not a fan of having to cripple your phone to get a days use out of it.
But +1 to the op for the advice. Always interested in other people's setup.
Keep this topic on track everyone, bans will be issued from now on for flaming, off topic garbage posted no exceptions
I bought the TBolt for its ability. Turning off all that ability seems counterproductive to me. So instead of turning everything off, I carry 2 extra batteries when needed. I get 5-6 hours of use out of my phone, flip batteries and continue on. No extended battery fat azz, no being tied to a charger. By the time 1 dies, the other is charged and another just in case. Works out well.
to each their own.
mathers53 said:
Many people have argued that since the thunderbolt has not been updated with gingerbread that it will die out and be worthless. I'm here to tell you that is not the case at all.
Click to expand...
Click to collapse
of course were getting GB, i always new it would be towards the end of summer or fall. who ever said the phone would die out? it took the evo almost a year to get it.
While I certainly applaud and respect the OP's position, I refuse to neuter this phone by turning everything off and making it a dumb phone.
I chose this phone due to the speed and features....turning off that just seems backwards.
Battery technology needs to make a jump, it's the hold up.
These phones should have 3000mah and NOT have a fat, rounded hump on back.
sink it into the phone..
The only thing I turn on and off with a widget is bluetooth.
I don't have the time to toggle between 3/4G, turn GPS on/off, etc.
loonatik78 said:
Point 9 is completely wrong. Lithium polymer batteries are nothing like nickel-cadmium batteries, and neither is the charging method. Li-on and Li-po batteries are NEVER trickle charged in an HTC device, or any device for that matter, unless they have been user-modified. It's also completely impossible to over-charge virtually all Li-on batteries because internal circuitry prevents this. An overcharged Li-on presents and extreme explosion hazard. The act over attempting to overcharge one presents an even greater risk of explosion because as the battery reaches capacity the heat generated inside the cells ramps up sharply. Some charge techniques actually use this sudden ramp up in temperature to determine a fully charged state, that's how precise it can be. But HTC devices, and cell phones in general, do not use this technique. Instead, they take advantage of another characteristic of the battery. As the battery charges, it's voltage output and resistance increase. At the fully charged point, the resistance increases sharply and this tends to be less dependent on cell temperature which makes this method more reliable. Upon reaching this point, charge current is shut off, not reduced. Charge is allowed to bleed off through discharge down to 90-95% before charge current is again applied. The only thing that really reduces the life of a battery, defined as reducing it's number of charge cycles, is storing the battery with a full or empty charge. A Li-on battery can be stored for very lengthy periods with roughly a third of a charge though.
Click to expand...
Click to collapse
+1 on this. He is absolutely correct on this point. Anyone who is into RC anything that uses Lipo's knows this as well.
The reason Toyota does not use Lipo batteries in their Prius' (even through they pack more power in a smaller package) is because of the extreme fire hazard from overheating lipo batteries by trying to "overcharge" them. They are afraid people will try and modify the charging systems to "squeeze" more juice out of them and catch fire.
loonatik78 said:
Point 9 is completely wrong. Lithium polymer batteries are nothing like nickel-cadmium batteries, and neither is the charging method. Li-on and Li-po batteries are NEVER trickle charged in an HTC device, or any device for that matter, unless they have been user-modified. It's also completely impossible to over-charge virtually all Li-on batteries because internal circuitry prevents this. An overcharged Li-on presents and extreme explosion hazard. The act over attempting to overcharge one presents an even greater risk of explosion because as the battery reaches capacity the heat generated inside the cells ramps up sharply. Some charge techniques actually use this sudden ramp up in temperature to determine a fully charged state, that's how precise it can be. But HTC devices, and cell phones in general, do not use this technique. Instead, they take advantage of another characteristic of the battery. As the battery charges, it's voltage output and resistance increase. At the fully charged point, the resistance increases sharply and this tends to be less dependent on cell temperature which makes this method more reliable. Upon reaching this point, charge current is shut off, not reduced. Charge is allowed to bleed off through discharge down to 90-95% before charge current is again applied. The only thing that really reduces the life of a battery, defined as reducing it's number of charge cycles, is storing the battery with a full or empty charge. A Li-on battery can be stored for very lengthy periods with roughly a third of a charge though.
Click to expand...
Click to collapse
Thanks for posting this, you saved me the time of posting something very similar.
U may have helped someone out there by this
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RC anything battery 4 hr. Charge barely 15 min run time.
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fixxxer2008 said:
of course were getting GB, i always new it would be towards the end of summer or fall. who ever said the phone would die out? it took the evo almost a year to get it.
Click to expand...
Click to collapse
More like 6 months since it came out in may, but I don't think is HTC fault more like Verizon most of their all phone don't have gingerbread and sprint got the evo shift, the evo 4G and even the damn echo with gingerbread already
I still don't see how its possible to get 40+ hours even with the extended battery. I'll be lucky to get 24. I do use my phone heavily tho so that may be why idk -.-
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Related
So after noticing how much of a difference people get in their battery lives, I've decided to do some research and make a guide-line that will give us all we need to know about properly using our batteries. First part is a general information and usage techniques for LIBs, second part is taken from Google materials on Android-powered devices (G1, Magic, Droid, Nexus One, etc).
Sources:
Wikipedia - http://en.wikipedia.org/wiki/Lithium-ion_battery
BatteryUniversity - http://www.batteryuniversity.com/parttwo-34.htm
Google IO Conference 2009 - http://www.youtube.com/watch?v=OUemfrKe65c
Electropaedia - http://www.mpoweruk.com/life.htm
General Lithium-Ion Battery (LIB) Usage:
• Discharging your LIB fully (or less than 2.4 Volt per cell) is bad for the battery. Every time you do that, it can be said that small part of your battery (some cells) dies (they forever lose their charge). Do not store your batteries depleted, there's a high chance they will die completely or will become very "weak".
• You cannot restore bad LIBs by overloading/heating/praying. You gotta go buy a new one. They DO degrade overtime, some cells naturally lose the ability to gain/give electricity.
• Although it is said that LIBs do not have memory, it's not entirely true. LIBs have gauges that monitor performance of cells, and if you do a lot of small charges, it won't let those gauges to monitor a full battery potential, causing an invalid indication of charge level. A complete charge/discharge should be made when battery capacity seems reduced, that will calibrate gauges and they will provide your phone with correct charge level status. A full charge/discharge cycle should be done every 30 (or so) partial charges.
• LIBs have a shelf-life. Do not buy them to store them. Use them early, use them often, they will die whether you use them or not. Do not buy LIBs to use them in 6 months/year/etc, buy them right before actually using them.
• LIBs have short lives (in comparison to NiCa batteries, etc). You should expect to buy a new battery in 2-3 years after being manufactured. It is caused by internal oxidation and there's nothing you can do to stop or prevent that.
• Worst LIB treatment is to keep it at 100% charge level at high temperature (think laptop/phone under direct sunlight, like car dashboard).
• Best LIB treatment, or LIBs "favorite" charge level - 40%. That's also the usual charge level you buy them with.
• LIBs don't like heat. For example, while always at 100%, typical LIB in a laptop, at temperatures of 25C (77F) will lose 20% (twenty percent!) of full capacity per year. That capacity loss is reduced to 6% (six percent) at 0C (32F), and increased to 35% loss at 40C (104F). So, keep them cool (LIBs like fridges), don't let your devices sit in the sun or overheat at charge. Also, keep in mind that while in use, battery will be significantly hotter than phone/outside environment
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• LIBs like frequent partial charges/discharges more than they like full charges/discharges.
General Android power usage advice from google:
• Although this part is somewhat controversial, they do recommend having a complete, full FIRST charge to be made. If time allows, a preferred time for the first charge is 12 hours. This may have more to do with the OS than the battery.
• Battery on a Android device, in average, will last about a full day with normal use (some videos, mail, calls). That's what you should kind-of expect.
• Speaking in averages, "idling" 3G/EDGE connection (when phone is sleeping and no data is transferred through 3G), drains almost no energy. Just a little more than having 3G/EDGE radio off completely. So when no apps are using 3G, you don't need to keep it off.
• Same goes to WiFi connection - although it's on, if there is no data flowing through it, it uses almost no energy.
• At full throughput (100% data flow), EDGE is using more energy than 3G. In average, 3G is more energy-efficient than EDGE.
• WiFi is using more energy than 3G (when both are at 100% use), but since it transfers files much faster and then goes to "sleep", it's actually recommended to use WiFi whenever possible. Since it'll "sleep" more often than 3G, overall it will use much less battery than using 3G.
• Some bad apps or widgets can use android's "WakeLock", keeping CPU at 100%, screen always-on, or both. I myself have encountered such widget (I won't mention the name, it's in the market) that used a WakeLock to keep CPU spun-up at 100% all the time. That makes a huge impact on battery life. My advice - use a CPU profiling app to monitor the CPU - make sure that CPU slows down by itself when it's not used. So, beware of such widgets/apps. To check for CPU cycles, many recommend OSMonitor (free from market, install it, go to options, sort by "Load" in descending order. It'll give you "busiest" processes at the top). At rest you should be getting about 10-20% for OSMonitor itself, and 1-10% Android System. At rest, everything else should be 0-1%.
• Android slows down CPU when not in use by itself, as a built-in feature. Apps that throttle/change CPU frequency, are not necessarily needed.
All this info comes from those reputable resources I mentioned above, I didn't make any of it up.
Great info, thanks!
I'm curious where you get the 10-15% discharge warning. The articles frequently mention that the cells can die if they go below 2.4V, but they also mention that the circuitry in the batteries prevents the batteries from getting anywhere near that threshold. When the battery meter on the phone says 10-15% it is very likely not indicating "within 10 to 15% of causing serious harm", but actually indicating "within 10 to 15% of the lowest safe level that I will allow you to reach".
When you hit "0%" on the phone's meter which you must do to properly calibrate the battery, you should still be safely above the danger point, as long as you recharge the battery soon and do not let it sit for a few days or weeks. It is only when you get to 0% on the meter and then let it sit where the self-discharge can then cause it to approach the true danger levels.
Or, at least that is the way I have been reading the Battery University article for the past couple of years that I have been helping people with their Lithium Ion batteries, so please point out the text that might show a misunderstanding here as I don't want to be giving bad advice.
I typically tell people not to do regular deep discharges anyway as recharging from such a state causes more heat than a shallower recharge and the heat is one of the biggest enemies of these batteries.
Another source for Lithium Ion recharging tips from the Battery University:
http://www.batteryuniversity.com/partone-12.htm
That page focuses more on charging concerns and provides some additional recommendations...
Thanks for pointing that out, that part its a general advice of when users should plugin their phones, coming from the information of trying to stick to a half-charge (or 40%) as close as possible. Besides, google decided to warn you at a 15% level, so this seems to be a good number to use.
Another source for Lithium Ion recharging tips from the Battery University:
http://www.batteryuniversity.com/partone-12.htm
That page focuses more on charging concerns and provides some additional recommendations...
Click to expand...
Click to collapse
Thanks, indeed a great article. I decided not to include it in resources though, since it's a bit too technical for the purpose of this article.
DarkDvr said:
Thanks for pointing that out, that part its a general advice of when users should plugin their phones, coming from the information of trying to stick to a half-charge (or 40%) as close as possible. Besides, google decided to warn you at a 15% level, so this seems to be a good number to use.
Click to expand...
Click to collapse
The 40% charge is the charge level that you should "store" a battery at, not what you should keep it at when it is in use. Where do you see the 40% mark cited for any other purpose?
The 15% warning from Android is simply a warning that it is close to running out of power and may shut off if you don't go looking for a charger now. It is a practical warning to avoid the surprise of reaching 0% and shutting off when the user is not paying attention to the meter.
On the contrary, your first bullet item uses the word "BAD" in capital letters and spells doom and gloom about killing part of their battery if they go below that level. That amount of severity in that comment is completely unwarranted. It is not true and it will scare people off of using their batteries to their fullest capabilities and scare them off of doing calibration cycles when they need to do them. When the warning pops up you don't have to turn off your phone to avoid damage - just be aware that you only have 15% capacity left. And discharging to 15% and then recharging because you are scared by the advice in this thread from going lower will not recalibrate the battery meter.
Any way I look at it, your bullet item #1 is providing no value at all and could potentially scare people into non-optimal battery maintenance routines.
Alright, I guess you got a point there.
I've corrected that bullet to be less tragic =)
Excellent rewording!
flarbear said:
Excellent rewording!
Click to expand...
Click to collapse
Thanks for your help
Great thread man! I knew most of that stuff already but didn't know about the WiFi's effect on the battery, I always thought it drained more battery than using 3G. I also didn't know it didn't drain any battery when not in use so thanks. Guess I'll be keeping that on from now on!
jasrups said:
Great thread man! I knew most of that stuff already but didn't know about the WiFi's effect on the battery, I always thought it drained more battery than using 3G. I also didn't know it didn't drain any battery when not in use so thanks. Guess I'll be keeping that on from now on!
Click to expand...
Click to collapse
The Google.com/phone specs page lists 5 hours internet usage on 3G and 6.5 hours internet usage on WiFi. That doesn't necessarily make sense when looking at the graphs above because 3G idle is less than WiFi idle and 3G full is less than WiFi full, but WiFi gets data transferred much more quickly (latency is much lower and speed is much higher) so it probably spends less time in the Full state. Either way, I haven't noticed any battery life problems leaving my WiFi on all the time...
i'll never believe that wifi is worse than 3g, no matter where i read it. the last 3 years, every phone i've had lasted much longer using wifi over 3g data. 3g data just seems to annilhiate my battery. but wifi it seems to last much longer. and google's specs seem to reflect that!
RogerPodacter said:
i'll never believe that wifi is worse than 3g, no matter where i read it. the last 3 years, every phone i've had lasted much longer using wifi over 3g data. 3g data just seems to annilhiate my battery. but wifi it seems to last much longer. and google's specs seem to reflect that!
Click to expand...
Click to collapse
Yep, the dude that spoke on the conference about battery life said that although WiFi uses more battery than 3G, it takes a lot less time for it to download/process data, and then go to "sleep" of sorts. So, over a period of time, WiFi would "sleep" more than 3G, which makes it far more efficient.
I always use WiFi whenever I can (at home for example).
jasrups said:
Great thread man! I knew most of that stuff already but didn't know about the WiFi's effect on the battery, I always thought it drained more battery than using 3G. I also didn't know it didn't drain any battery when not in use so thanks. Guess I'll be keeping that on from now on!
Click to expand...
Click to collapse
+1 ... and thanx for the chart.
I didn't charge my battery all the way up before using my N1 (though I did leave it plugged in when I was using it). Was that bad for the battery?
I think of it this way, WiFi only needs enough transmit power to broadcast a couple hundred feet. 3g needs power to transmit a couple miles or more. which one seems like it would use less power? I say WiFi.
RogerPodacter said:
I think of it this way, WiFi only needs enough transmit power to broadcast a couple hundred feet. 3g needs power to transmit a couple miles or more. which one seems like it would use less power? I say WiFi.
Click to expand...
Click to collapse
There's no such thing as public wifi here, I'm lucky to get a signal anyways.
Here's from thismorning, no use:
I didn't charge my battery all the way up before using my N1 (though I did leave it plugged in when I was using it). Was that bad for the battery?
Click to expand...
Click to collapse
Nah, not really. It is recommended, but it seems that nobody can tell for sure what kind of impact it has. In my experience, I have 2 batteries - one I broke in, one I used right away... It seems that I do get a bit better battery life with the one I've broken in..
For optimal battery performance:
If you're going to be at the same place for a long time (ie at home or work for 8 or more hours), do you leave it plugged in, or charge to 100 and immediately unplug?
If unplug, how low do you let it go before plugging back in? 90%? 80? 40?
Everybody knows the problem of battery draining in our beloved Cappy
I found an oldschool solution.
Drain your Cappy's battery to the end
enable gps
no battery saving mode
enable wifi
Maxed brightness
After that let it charge for the night until it's 100%
After startup it will show you 97% but its 100%.
Im with wifi for 2hr and the battery draind only 7%
Also hope that this solution is not like "thanks captain obvious"
hope it will help's u, share your findings after using this method.
Using perception 10.4 and speedmod k13b
Sry for my bad english...
I will try you old school method
Old school method worked on old school NiCAD batteries that suffered from memory. New school LiON batteries do not.
Ok for me. I simply restart my sd gingerbread androïd. And my android consums only 6mA in sleeping mode.
Sent from my HTC HD2 Gingerbread using XDA App
I will give it a try and see how it goes.
fitao said:
Ok for me. I simply restart my sd gingerbread androïd. And my android consums only 6mA in sleeping mode.
Sent from my HTC HD2 Gingerbread using XDA App
Click to expand...
Click to collapse
How is that relevant to a Captivate?
I will give this a try.
Sent from my SAMSUNG-SGH-I897 using XDA App
Miami_Son said:
Old school method worked on old school NiCAD batteries that suffered from memory. New school LiON batteries do not.
Click to expand...
Click to collapse
If you haven't done it in a while for a Li-on device it will recalibrate the charge controller, but it doesn't increase the actual chemical capacity of the battery like it would for NiCad.
GSMinCT said:
If you haven't done it in a while for a Li-on device it will recalibrate the charge controller, but it doesn't increase the actual chemical capacity of the battery like it would for NiCad.
Click to expand...
Click to collapse
Draining Li-On batteries completely is bad for them.
Miami_Son said:
Draining Li-On batteries completely is bad for them.
Click to expand...
Click to collapse
I've heard it's only bad if you leave them down for more than 12-24 hours. If you put it right back on the charger, I think it's good once in a while. That's that Apple recommends for theirs, anyways.
GSMinCT said:
I've heard it's only bad if you leave them down for more than 12-24 hours. If you put it right back on the charger, I think it's good once in a while. That's that Apple recommends for theirs, anyways.
Click to expand...
Click to collapse
Heat is the enemy of any battery. The lower you run it down the longer it will have to be on the charger to get back to 100% and thus the longer it will be exposed to heat. Calibrating the battery and then wiping the stats should be all you need to do. I easily get 25-30 hours out of my battery with moderate use and I rarely let it get below 30%. And if I listened to Apple I'd have an iPhone.
Miami_Son said:
Heat is the enemy of any battery. The lower you run it down the longer it will have to be on the charger to get back to 100% and thus the longer it will be exposed to heat. Calibrating the battery and then wiping the stats should be all you need to do. I easily get 25-30 hours out of my battery with moderate use and I rarely let it get below 30%. And if I listened to Apple I'd have an iPhone.
Click to expand...
Click to collapse
Yeah, but these devices often get run down and charged. I think Apple's right on this. FYI, that's about the Macbook, which I have one, not the iPhone (don't have one of those).
Here's what TechRepublic had to say about it:
Lithium ion
Of the types of batteries mentioned here, lithium ion cells have some powerful advantages. They have an energy density of 150 watt-hours per kilogram. Like NiMHs, Li-ion batteries have no memory effect. That is, they don’t lose the capacity to fully charge if they aren’t fully drained. Left on the shelf, they lose the least power. Their discharge rate, at 10 percent per month, gives them a good storage life (but they must be used within two years of manufacture). This means that you can grab one that you charged up three months ago, and it will still have about 70 percent of its charge left. If you’re maintaining a number of laptops, that’s good news.
These batteries also have some important disadvantages, however. They have a volatile chemistry. Each lithium ion pack in your laptop must have its own electronic protection circuit that protects against overcharging, over-discharging, and too-high current. Each cell of the battery pack incorporates a built-in safety vent. All three battery types have a safety vent, but unlike NiCad and NiMH batteries, which can withstand some overcharging, the vent in lithium-ion batteries is designed to disconnect the battery permanently if it ever has to be used. It does not reseal. The potential danger of this type is why Li-ion batteries come as a sealed unit including safety electronics. As a helpful part of the circuitry, each Li-ion battery provides a charge indicator. Pressing a button will cause a row of lights to be lit, indicating the charge, as shown in Figure A.
I was surprised to learn that of all the batteries, lithium-ions have the worst useful life. Though they have a slow discharge rate on the shelf, all Li-ion batteries irreversibly lose capacity over time. Even after one year, they lose the ability to be charged to full capacity. Cadex tests indicated that their practical service life is only two years. According to Cadex’ document, Batteries for Mobile Computing, “Li-ion batteries should not be stored for long periods of time but consumed like a perishable food.” On the other hand, while they don’t deliver as many cycles as NiCad batteries, they do provide up to 1000 cycles if they’re used within that two-year lifespan. They are also maintenance free. Not only do they suffer no memory effects, they don’t need to be periodically discharged and topped off. Like NiMH batteries, shallow discharges actually increase the number of cycles. Unfortunately, these cells are expensive. Keep in mind that your IT department might be better off with a smaller, rotating inventory.
As you can see, there's nothing to be gained by discharging them completely. BTW, Apple laptops have circuitry that prevents the device from discharging the battery completely to prevent damage. I'm not sure our phones have this, so their advice should not apply here.
Android only lets the battery discharge to ~40%, WinMo6.5 to ~30%.
The point is (was) that there's no memory effect and therefore no valid reason to be discharging these batteries completely. The "old school" method just doesn't apply here and could actually shorten the battery's life in terms of charging cycles.
Miami_Son said:
Heat is the enemy of any battery. The lower you run it down the longer it will have to be on the charger to get back to 100% and thus the longer it will be exposed to heat. Calibrating the battery and then wiping the stats should be all you need to do. I easily get 25-30 hours out of my battery with moderate use and I rarely let it get below 30%. And if I listened to Apple I'd have an iPhone.
Click to expand...
Click to collapse
Define moderate use? I struggle to get over around 14 hours of use. Usual stuff includes 2 hours of music, maybe 50 to 100 text messages, up to 5 minute of calling (rarely make calls), and little to no WiFi or games. I do use the data network a bit, having Facebook and Twitter and stuff syncing every hour. But overall, my battery life sucks.
That's actually not bad for everything you describe. Remember in a smart phone the more the screen is on the faster the battery dies.
geokilla said:
Define moderate use? I struggle to get over around 14 hours of use. Usual stuff includes 2 hours of music, maybe 50 to 100 text messages, up to 5 minute of calling (rarely make calls), and little to no WiFi or games. I do use the data network a bit, having Facebook and Twitter and stuff syncing every hour. But overall, my battery life sucks.
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I897 using XDA App
And if you're syncing in a mediocre (1-2 bars) network coverage area it takes even more power than when you have 4-5 bars. I generally have about 2-3 hours of screen on-time between charges, several phone calls and texts, e-mail pushing every hour, some game playing, some BT on while in the car, some Market/web surfing and every other day I track my MTB rides with GPS while listening to music via BT. I put the phone on the charger every night, but I do carry a spare battery just in case. I wasn't getting this kind of battery performance on Eclair, though.
Miami_Son said:
And if you're syncing in a mediocre (1-2 bars) network coverage area it takes even more power than when you have 4-5 bars. I generally have about 2-3 hours of screen on-time between charges, several phone calls and texts, e-mail pushing every hour, some game playing, some BT on while in the car, some Market/web surfing and every other day I track my MTB rides with GPS while listening to music via BT. I put the phone on the charger every night, but I do carry a spare battery just in case. I wasn't getting this kind of battery performance on Eclair, though.
Click to expand...
Click to collapse
How? Did you do something to your phone for this?
Sent from my SAMSUNG-SGH-I897 using XDA App
Caliesv said:
How? Did you do something to your phone for this?
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Yeah, I flashed to Andromeda 1.2. I also have the screen dimmed down, no active wallpaper, few widgets and I turn off wifi when I don't need it.
And to prove I'm not lying...
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One would think by now, that after HTC put out the evo and other large screen devices they would have better batteries. Also not to mention the thunderbolts delayed release. No we waste more on extended batteries, and have no cases to protect the dam thing. I've tried all the tips out there for tweaking the battery to get max use and it still sucks. I'm still in my 14 day trail period and I'm thinking of bringing it back. I'm just pIssed companies have the nerve to do this BS!
Well take it back then. Try a blackberry out. Oh yeah those things have even worse batteries and the bis always fails.
Sent from my ADR6400L using XDA Premium App
First off I get plenty fine battery for a phone as fast as this with LTE. The large, bright screen is just a bonus. If you are getting bad battery you have yourself to blame if you would read these forums as almost everyone here is getting great battery life.
Also, your battery size complaint is terrible, the droid X has almost the same battery and runs fine as well. The LTE right now is the killer, verizon has admitted it so either switch to 4g or 3g only and stop flooding the boards with this crap.
I make it through the day no problem, and with LTE on. First few days were terrible, but things seem to have improved drastically since then.
Take it back. Threads like this show that it's not for everyone.
Example - I have a car dock, I commute, I work on a comp. all day, easy enough to charge at home. I've never had this battery life issue everyone is talking about.
miketoasty said:
First off I get plenty fine battery for a phone as fast as this with LTE. The large, bright screen is just a bonus. If you are getting bad battery you have yourself to blame if you would read these forums as almost everyone here is getting great battery life.
Also, your battery size complaint is terrible, the droid X has almost the same battery and runs fine as well. The LTE right now is the killer, verizon has admitted it so either switch to 4g or 3g only and stop flooding the boards with this crap.
Click to expand...
Click to collapse
uhhhhhh what? The majority says the battery sucks. Where have you been?
mojonation1487 said:
uhhhhhh what? The majority says the battery sucks. Where have you been?
Click to expand...
Click to collapse
I have read WAY more posts about good battery life than I have bad. Where have you been? Yes, there are occasional posts about it but the vast majority after a little bit of tinkering have said good battery life.
My personal experience.
Took my phone off the charger at 96%. Used the GPS on a hour drive, sending texts and listening to music the whole way. Ate some dinner while continuing to send texts. Went to a hockey game and took ~30 Pics. Used the GPS to get back home with music and finally put the phone back on the charger. Time off charger 7 hours. Battery percentage 82%. Only 14% decrease with what I would say is some pretty moderate use.
One thing I actually thought was funny is I pulled out an old Sammy flip phone to see what size battery it had. 1100 mah. 5 years ago they were shipping dumbphones with 1100 mah batteries. Come to present day, a phone with 4G, a 1 ghz processor, and a ginormous lcd screen has a bump of 300 mah. Is something wrong with that?
Sent from my ADR6400L using XDA Premium App
miketoasty said:
First off I get plenty fine battery for a phone as fast as this with LTE. The large, bright screen is just a bonus. If you are getting bad battery you have yourself to blame if you would read these forums as almost everyone here is getting great battery life.
Also, your battery size complaint is terrible, the droid X has almost the same battery and runs fine as well. The LTE right now is the killer, verizon has admitted it so either switch to 4g or 3g only and stop flooding the boards with this crap.
Click to expand...
Click to collapse
I don't want to sound like a jackass, but I bought a 4G phone, not a 4G phone I need to use in 3G so I can make it through the day. In the end I just bought the extended battery. Solved all my woes.
Sent from my ADR6400L using XDA Premium App
If I can figure out how to go 22 hours with 43% remaining on my phone with moderate to heavy use, than sure as hell you should be able to get at least 12-15 hours out of the phone, not knowing half of what I know.
cause that is all that matters right, making it through the day for how long your awake, so for most people 12-15 hours, then you are home and can plug it in.
who cares if you make it home and plug it in at 5%, it still lasted you all day.
I've done the 5 tips for better life, and thou it has a improved.... its a minor improvement. the phone is with out a doubt sweet, im just pissed bc i cant get a full day out of it. i work for 8 hours and leave the friggin thing in airplane mode, then on my way home i listen to music with it still in airplane mode subway kills it mad quick....i do and dont wanna bring it back i want the newest thing out, im coming from a OG moto droid.. 50-60 bucks for a goddamn battery that makes your phone last longer and turns it into a potential weapon...data/voice together is the only feature right now that is making it hard for me to decide if i should bring it back or not.. i got it this past Saturday i have 8 more days to decide, not to mention vzw wants the 35 dollar restock fee now. who remembers when they had the 30 day test run??? lmao they stop doing it because people kept bringing phones back within the period...
my phone definitely lasts me the day, but i don't think it would last the 10 to 15 hours that others are reporting. i already turned the brightness down to about 25 - 30 percent, turned off unnecessary widgets and sync'ing plus i set setcpu to throttle the cpu down to lowest speed when the screen is off. as such, i'd like to know what others are doing to squeeze so much battery time out of their TBs.
Custom Rom and Kernel seemed to help my battery life a ton. I can now easily make it all day with moderate to heavy use on stock battery. From the battery monitor, it looks like the screen will eat the most power, be sure to keep it set low. The underclock/volt while screen is off uses hardly any batter power and is really nice as well.
I'm getting awesome battery... My phone has been up for about twelve
Hours now and I still have about 45 percent... Heavy usage texting music internet and xda posting.
Sent from my ADR6400L using XDA App
TBJared said:
Custom Rom and Kernel seemed to help my battery life a ton. I can now easily make it all day with moderate to heavy use on stock battery. From the battery monitor, it looks like the screen will eat the most power, be sure to keep it set low. The underclock/volt while screen is off uses hardly any batter power and is really nice as well.
Click to expand...
Click to collapse
On all Android devices the screen is the battery eater, except on 2.0/2.1 with Exchange Sync issues... then it could hang and eat the battery.
I've never really had an issue with battery life. That's not to say my battery lasts longer, i just use different methods to keep my devices alive.
AA USB chargers have always been a good friend of mine, as well as plugging my phone into my laptop while it's in my backpack.
I can't wait for an external battery charger to come out for the TB, then you just have 2 or 3 batteries and swap them out as needed.
But if you're expecting more than 8 hours or so off of one charge they're right, you may look for another device
Yah man, 3 hours of navigation, with music going, many calls, 3 hours of internet use, txt & talk and LTE and 3G switching through out all day because of traveling . I was really heavily using the phone with an extended battery but made it just over 24 hours... Try trading it in for another battery. Your not Wifi tethering all day as home network are you?
hammer4203 said:
Well take it back then. Try a blackberry out. Oh yeah those things have even worse batteries and the bis always fails.
Sent from my ADR6400L using XDA Premium App
Click to expand...
Click to collapse
I'm not sure what you're talking about. Blackberries are known for having excellent battery life. I had 12 hours 40 some odd minutes and was at 69% last night when i plugged my TB in to charge. I really don't understand the problem.
edit: proof, this was a few hours before i plugged it in.
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Stop whining about the phone. If you don't like the phone, take it back. No one here is forcing you to keep it.
Sent from my ADR6400L using XDA App
howtodoo? said:
One would think by now, that after HTC put out the evo and other large screen devices they would have better batteries. Also not to mention the thunderbolts delayed release. No we waste more on extended batteries, and have no cases to protect the dam thing. I've tried all the tips out there for tweaking the battery to get max use and it still sucks. I'm still in my 14 day trail period and I'm thinking of bringing it back. I'm just pIssed companies have the nerve to do this BS!
Click to expand...
Click to collapse
You bought a device with a 4.3" screen and a brand new radio technology. Honestly, what did you expect.No phone out there with a screen that large has what could be considered great battery life. Sure some are better then others, but these are not BB devices. And while we are at it, lets be realistic here... if they put in a bigger battery you would be in here complaining about how large and how heavy the phone is.... You can't have everything, something has to give at some point.
We always neglect the way we charge our mobiles, it’s very important to equally take care of your phone’s battery along with your phone. So, when it comes to the charging then you will have to ensure that you never overcharge your phone which means that never put your phone for charging over night as this may hamper the battery’s life very badly due to which you may even end up spoiling battery sooner than expected. It hardly takes 3 hours for phone to fully charge, so never charge your phone more than this time.
Also, many of the users tend to charge their phones regularly, like even if battery goes below 50-40% people tend to haste and put the phone up for charging. So unless and until you are going away from the charging point, it’s not a wise decision to charge it way ahead than the battery zeroing point. Make use of the AC chargers rather than using the USB points for charging the phone as basically the USB charging does the trickle charging which is not good for often charging the phone.
All batteries has the Golden color notch pins and with frequent pull outs these notches become loosely fit and are rubbed with the pins which leads to the wear and tear of the contacts and hence it decreases the life of the battery and the effective charging of the device is not passed on to the phone as the contacts in the form of pins gets loosen up. And also last but not the least never make use of the batteries which are not as per the prescribed specification chart which comes along with the phone and always use original batteries which can be purchased from Samsung.
Never put additional sim cards or anything like that in the compartment of the battery as this may cause some serious issue with the battery and may even explode at an extreme situation as every battery generates heat and it requires space to dissipate that heat and if its interrupted then it can be dangerous for batteries.
Unless and until you are not using the actual 3G Service, it’s better to choose the GSM Mode network rather than selecting Dual mode or the WCDMA Mode which drains the battery faster than the GSM mode.
Make sure that you set the brightness of the device to automatic and not to the fullest which is set by default, since it’s a touch screen phone back light should be not more than 15 seconds as that’s more than enough which can be done by going to HOME > MENU > Settings > Display > Brightness and Screen timeout
Make sure that You Tube, music listening, programs which runs in the background including the Sync option along with Bluetooth should be turned off whenever necessary as these too constitutes fair amount of battery drain.
GPS as well as the Camera eats up a lot of battery, so always remember to switch these both off when not in use or necessary and specially when battery is low then it’s advised to not to use these features which can be quickly done by setting the widget shortcut on the home screen itself, touch and hold on the Home Screen in the blank area and not on any app icon and select Widget>Power Control. Add this Widget to your home screen to choose the express settings
Copy and pasta.
Printerscape said:
Copy and pasta.
Click to expand...
Click to collapse
El spamola?
Nice post, incredibly informative!
Sent from my Desire HD using XDA Premium App
OP,
WTF - you can't overcharge your battery. The ROM/kernel doesn't allow it. The closer the battery gets to 100% the voltage is decreased further and further. At 100% there is just a small trickle that roughly breaks even with the demand of the phone. Telling people they shouldn't leave their phone plugged in for more than 3 hours is ridiculous. There was just a thread on here a couple of weeks ago where an AT&T employee told someone the same thing, and everyone was making fun of how stupid that advice was.
^+1 !!!!!!!!!!!!!!!!
Sorry, OP. You are passing off bad information.
Thread closed.
No matter which phone you have, an iPhone or a GS3/GS2 or a Xperia device, you always fret over the battery life of your device! (Xperia owners a little more)
Instead of splashing out on expensive battery packs, here is a list of things you can do to get the maximum out of your battery :
1. It’s all about the Apps!
Many of the more than one million apps available to download to smartphones contain programming errors and software bugs that mishandle power control. This means your devices can remain active when they should be sleeping which further leads to unnecessary draining of your battery. Identify these apps! (Other apps like Carat can help you with that) and monitor there use!
Also, there is a good chance that there are apps running in the background of your phone that you think you closed or reappear each time you reboot your device. Fortunately, it’s easy to identify and correct this on the iOS and Android operating systems with a few easy steps. All open apps drain battery, so in this case, the lesser, the merrier!
2. The battery is always better on the cooler side!
Your smartphone most likely uses a Lithium Ion (Li-ion) battery. Be aware that extreme temperatures can negatively impact battery life so whenever possible keep your device in elements between 32 and 95 degrees Fahrenheit. While a frigid phone should reclaim its functionality once it returns to room temperature, an overheated device could permanently ruin your battery. Over the course of a year, prolonged exposure to climates above 95 degrees could reduce a phone capacity by as much as 35 percent.
Remove any protective cover or accessory every time your phone is being charged. When you’re walking around, keep your phone in a ventilated holster or belt clip rather than a sweaty hand or pocket. Over-charging will also contribute to an overheated phone.
3. Always look at the bright side of life! – well the screen actually!
Turn on Auto Brightness! Most phones have an ambient light sensor that adjusts the brightness of the screen based on the light around it (darker in dark places, brighter when there’s more ambient light) to both save battery and make it easier to see. Turn Auto-Brightness on and you’ll save battery because your screen will need to use less power in dark places.
If not, manually adjust your screen brightness according to your needs by accessing it from the settings menu.
4. Stay (dis)connected!
Transmitting data wirelessly takes battery and leaving Bluetooth on to accept incoming data at all times requires even more juice. Turn off Bluetooth except when you’re using it (duh!) to squeeze more juice from your battery.
3G can be a real battery zapper, especially if you’re using it in an area of marginal coverage. If in doubt, your phone probably has a toggle setting where you can set your phone to use only 2G, You will soon see an extension to battery life that way while not really compromising speed or service.
And disabling a 3G connection when not needed is just the start. If you know you’re going to be away from home or a known wireless Internet connection, turn off your Wi-Fi locator. Also, GPS is particularly handy if you find yourself navigating somewhere new, but don’t leave it on all the time if you’re not using it.
5. Zip it!
When in a meeting or a movie, switch your phone into silent mode. Unnecessary notifications will only lead to lesser battery life. Use a basic ringtone! Advanced ringtones can sound better, but the phone will die soon! Also, turning off location services and push-notifications is definitively a step-forward towards saving battery life!
If you discover your smartphone seems to be running out of battery life quicker than ever despite your habits remaining unchanged, it could be worth investing in a spare or new battery. It’s worth noting that aftermarket batteries not made by the original equipment manufacturers (OEMs) are considerably cheaper. They do, however, vary in quality. Some aftermarket batteries can be trusted, but be aware of ‘too good to be true’ prices for smartphone batteries on retailers like eBay. You could end up with junk, or worse, a faulty battery that permanently damage your device. Buy carefully and smartly from trusted retailers to be safe.
Underclock your phone to 800/1000Mhz (while you are travelling) cz SGSII can do most of the stuffs within that speed.
Use Custom kernel like siyah wch has better battery backup than stock
dont set min freq to 100MHz cz 200MHz is much more energy efficient than 100 & has more operationg power !!
Come on man, show some love for Celsius! Besides, it is what most of the world uses and is not seemingly arbitrary (or based on how cold it gets in the average american's basement)!
Anyway, well written guide, may prove useful for the lesser knowledgeable folks out there
Whilst I applaud you for putting this info together, it is not specific to the SGS2. This is SGS2 General. This kind of thread belongs General Discussion or at the very least in Android General (tho probably the former).
For 1. I would recommend using an app such as Go Power Master, as it tracks which apps are running as how much power they are using. Some apps are always running, but use very little power while others can use a lot while it is running.
Also, if this may be applicable:
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on. As far as power cycling, I run my Atrix 2 in performance mode all the time, and with a CPU overclock of 1.25GHz and various tweaks, I have about a day an a half to a day and a quarter of full runtime from my battery. This is moderate to heavy usage (calls, emailing, text, gaming, web browsing, etc.) so you should have no problems getting acceptable battery performance after following these steps:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM.
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my SAMSUNG-SGH-I747 using xda premium
A samsung developer actually said that whiping battery stats doesn't matter at all, it was on the XDA frontpage some time ago
AOKP undercloking
sekhargreen said:
No matter which phone you have, an iPhone or a GS3/GS2 or a Xperia device, you always fret over the battery life of your device! (Xperia owners a little more)
Instead of splashing out on expensive battery packs, here is a list of things you can do to get the maximum out of your battery :
1. It’s all about the Apps!
Many of the more than one million apps available to download to smartphones contain programming errors and software bugs that mishandle power control. This means your devices can remain active when they should be sleeping which further leads to unnecessary draining of your battery. Identify these apps! (Other apps like Carat can help you with that) and monitor there use!
Also, there is a good chance that there are apps running in the background of your phone that you think you closed or reappear each time you reboot your device. Fortunately, it’s easy to identify and correct this on the iOS and Android operating systems with a few easy steps. All open apps drain battery, so in this case, the lesser, the merrier!
2. The battery is always better on the cooler side!
Your smartphone most likely uses a Lithium Ion (Li-ion) battery. Be aware that extreme temperatures can negatively impact battery life so whenever possible keep your device in elements between 32 and 95 degrees Fahrenheit. While a frigid phone should reclaim its functionality once it returns to room temperature, an overheated device could permanently ruin your battery. Over the course of a year, prolonged exposure to climates above 95 degrees could reduce a phone capacity by as much as 35 percent.
Remove any protective cover or accessory every time your phone is being charged. When you’re walking around, keep your phone in a ventilated holster or belt clip rather than a sweaty hand or pocket. Over-charging will also contribute to an overheated phone.
3. Always look at the bright side of life! – well the screen actually!
Turn on Auto Brightness! Most phones have an ambient light sensor that adjusts the brightness of the screen based on the light around it (darker in dark places, brighter when there’s more ambient light) to both save battery and make it easier to see. Turn Auto-Brightness on and you’ll save battery because your screen will need to use less power in dark places.
If not, manually adjust your screen brightness according to your needs by accessing it from the settings menu.
4. Stay (dis)connected!
Transmitting data wirelessly takes battery and leaving Bluetooth on to accept incoming data at all times requires even more juice. Turn off Bluetooth except when you’re using it (duh!) to squeeze more juice from your battery.
3G can be a real battery zapper, especially if you’re using it in an area of marginal coverage. If in doubt, your phone probably has a toggle setting where you can set your phone to use only 2G, You will soon see an extension to battery life that way while not really compromising speed or service.
And disabling a 3G connection when not needed is just the start. If you know you’re going to be away from home or a known wireless Internet connection, turn off your Wi-Fi locator. Also, GPS is particularly handy if you find yourself navigating somewhere new, but don’t leave it on all the time if you’re not using it.
5. Zip it!
When in a meeting or a movie, switch your phone into silent mode. Unnecessary notifications will only lead to lesser battery life. Use a basic ringtone! Advanced ringtones can sound better, but the phone will die soon! Also, turning off location services and push-notifications is definitively a step-forward towards saving battery life!
If you discover your smartphone seems to be running out of battery life quicker than ever despite your habits remaining unchanged, it could be worth investing in a spare or new battery. It’s worth noting that aftermarket batteries not made by the original equipment manufacturers (OEMs) are considerably cheaper. They do, however, vary in quality. Some aftermarket batteries can be trusted, but be aware of ‘too good to be true’ prices for smartphone batteries on retailers like eBay. You could end up with junk, or worse, a faulty battery that permanently damage your device. Buy carefully and smartly from trusted retailers to be safe.
Click to expand...
Click to collapse
Actually I underclock my GS2 to 800Mhz thanks to an AOKP Rom and my battery last one hour or one hour and a half more, which is great when you just have 7/8 hours of battery life normally. It didn't really affect the use of common apps, but of course if you want to play big 3D games, I suggest you to clock it a its original rate (1.2Ghz for the GS2 for example).
---------- Post added at 01:26 PM ---------- Previous post was at 01:21 PM ----------
Neefy said:
A samsung developer actually said that whiping battery stats doesn't matter at all, it was on the XDA frontpage some time ago
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Yes I think so because this is just statistics, it will not affect the actual battery life of the phone.
Apex_Strider said:
Also, if this may be applicable:
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors (as mentioned above), and re-calibrating the battery along with some steps I will outline for you below will ensure that your battery is getting a full charge, and the battery reporting accuracy is right on.
<Snip>
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This is bump charging and while it does work, it is not good for Li-on batteries. I'll find the link and edit it back in but bump charging will shorten the life of your battery due to inconsistent charge cycles.
Neefy said:
A samsung developer actually said that whiping battery stats doesn't matter at all, it was on the XDA frontpage some time ago
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This is from my battery guide. OP (or anyone for that matter), feel free to check it out. There is far more information, apps, deep memory management trick,... Link is in my signature.
Batter Calibrator –
<Snip>
**Note that this can be done two other ways. You can boot into CWR or Custom Recovery and go to Advanced Settings and there will be the Wipe Batterystats.bin option. Or you can do it manually by going into /data/system/ and deleting the batterystats.bin in there. Any of the three methods work to get the entirely same result in the end. I just like using the app or manually myself. **
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Recently there has been information debunking this process. I will post it below, however I know what it says, but I also know what I've seen/experienced too. Here is the post by Dianne Hackborn, a Google Dev on her G+ account.
Dianne Hackborn - Jan 12, 2012 - Public
Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
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Neefy said:
A samsung developer actually said that whiping battery stats doesn't matter at all, it was on the XDA frontpage some time ago
Click to expand...
Click to collapse
The point of doing so is if you happen to get incorrect battery reporting, which DOES occur in certain capacities. So, in my book as well as many others, it does matter for these situations. If only one developer told you the world was flat, would you believe that also?
Sent from my SAMSUNG-SGH-I747 using xda premium
Thanks for the useful information!
Great information that applies to any phone, thank you.
Sent from my SPH-D710 using xda app-developers app
sekhargreen said:
No matter which phone you have, an iPhone or a GS3/GS2 or a Xperia device, you always fret over the battery life of your device! (Xperia owners a little more)
Instead of splashing out on expensive battery packs, here is a list of things you can do to get the maximum out of your battery...<snip>
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Apex_Strider said:
Also, if this may be applicable: <snip>
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Great info/tips from both members above. Thanks button thanked for both!
Fosho bro thanks a lot...simple tips
Sent from my One X using xda app-developers app
Actually I could only save battery on my MEIZU by underclocking & battery saver app.
Thanks for your infos, I'll give some of them a try now (again )
Nice information... thanks for sharing..
You can also buy a better battery for your phone. They normally are cheap too
Sent from my HTC Sensation Z710e using xda app-developers app
I just turn on power saving mode. But I still need to recharge my phone daily, once in two days if I'm lucky. But after reading this topic I will see if I can scratch those pesky powerhungry little demons.
Sent from my GT-I9300 using xda app-developers app
Apex_Strider said:
The point of doing so is if you happen to get incorrect battery reporting, which DOES occur in certain capacities. So, in my book as well as many others, it does matter for these situations. If only one developer told you the world was flat, would you believe that also?
Sent from my SAMSUNG-SGH-I747 using xda premium
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Battery stats has nothing to do with battery reporting. And it was an engineer from Google's Android team that debunked the battery stats wives' tale.
So yeah, folks probably should believe a recognized subject matter expert when they clearly and concisely debunk misinformation such as the advice to wipe battery stats.
Also, it bears mentioning that the os clears battery stats upon every reboot, making the advice to do so even more pointless than it already is.
Sent from my Galaxy Nexus using Tapatalk 2
Great tips...definately learned something! Much appreciated!!
Sent from my SGH-T989 using xda app-developers app