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I am now on my 2nd full charge. Drained completely and full charge while off. I have the battery calibration app and i use it. Im about to take my phone off the charger and put it to work.
How many times did you calibrate your battery before you got the full potential of it. I see some people are getting as much as 30+ hrs on their device while im getting 7-9 on moderate use.
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
regP said:
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
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Ill keep it till tues/wed and see what happens. If I don't see improvement ill exchange once again
Sent from my LG-P999 using XDA Premium App
regP said:
I've never done that. Always read that draining lithium-ion batteries hurts the battery if done repeatedly. Instead I just charge to full then delete battery stats in clockworkrecovery. Battery has been great ever since that and a factory reset.
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What does deleting the battery stats via ClockWork do? Do you delete them on each charge?
I was getting great battery life and then I used the calibration software and I'm getting good, but slightly less great battery life. Does uninstalling/freezing that app do anything or once it's calibrated, it's done?
The phone has a dual-core processor, and the best GPU you can get in a phone these days, so you can't expect it to get super battery life unless you never use the phone much. I did the calibration once, and have been able to go all day under moderate to heavy use. All day being 8am-7pm and still having ~20% charge.
Sadly my first g2x that I received wasn't able to go through more than 4 hours of standard use even after fully charged the 2nd time. I sent it in last Friday for exchange and now I'm waiting for the 2nd g2x to be send to me. Well see how it goes by then.
@himmelhauk - I noticed in your signature that you have the Paul O'Brien fix... I saw in that thread that that noticeably increased speed/smoothness, but I haven't heard anybody talk about its influence on their battery. Have you noticed a difference in your battery life after making that tweak?
Me
I only calibrated once, and that plus some other simple tweaks i saw great results. I usually get about 20+ hours of medium use(A few calls, non-stop texting, occasional game or youtube video, and checking email every couple of hours). If you want to see what I did you can click the link in my sig.
lobsterhead said:
What does deleting the battery stats via ClockWork do? Do you delete them on each charge?
I was getting great battery life and then I used the calibration software and I'm getting good, but slightly less great battery life. Does uninstalling/freezing that app do anything or once it's calibrated, it's done?
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it gets rid of the battery information stored within the os so that the phone reads the battery charge correctly. this was common practice for vibrant owners after flashing a new ROM. I've seen people saying that this phone has horrid battery drivers so I dunno how that will effect the battery stats but after a factory reset and deleting the stats my battery is double what I was getting on my vibrant.
I only do this after flashing a new ROM or in this case upon getting and setting the phone up. I would do it again if I swapped the battery for a different one also. just charge to 100%, reboot into clockwork, advanced menu, wipe battery stats, done. it DOES NOT increase battery life. it only allows the phone to read the battery more accurately which would keep the phone from thinking its dying when it still has considerable charge left. that's why you hear about people seeing their battery life read 1% yet the phone last for hours.
I only calibrated once because I realized the values were off a bit.
Tried every battery trick in the book. If you actually want to use the phone, nothing will help. Android is a battery eating nightmare. Hopefully one day the platform will mature so adults can use it as a business phone. I think I am returning mine or giving it to my kid.
I did a single calibration and am now seeing 20+ hours with decent usage. Fully charge the battery, use battery calibration app to erase settings, let it drain till it shuts itself off, try pressing the power button to make sure there's no remaining charge, then fully charge to 100% with the phone still off (you can tap the power button while its plugged in and off to briefly bring up a battery indicator on the screen with out actually powering up). Its true that lithium ion batteries last longer if they don't go through fully discharge cycles, but thats referring to repeated occurances, not a rare or occasional situation. And when calibrating, draining from 100 to 0 is the best method of getting a good calibration. Additionally, while its healthy to do the mid charges most of the time, about once a month or so you should do a full drain. This helps keep the calibration accurate (remember that android will continue to modify the file, albeit at a greatly reduced level after the initial discharge of a new calibration, hence why that occasional full discharge is valuable). A full discharge once a month won't significantly reduce your battery's life expectancy.
cbowens said:
let it drain till it shuts itself off, try pressing the power button to make sure there's no remaining charge
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Draining a li-ion battery past the safe shut off is an easy way to damage or completely kill the battery. Your phone is set to shutdown before complete discharge for this reason. The full discharge then charge method was for NiCd batteries. This has no use for lithium-ion batteries.
regP said:
Draining a li-ion battery past the safe shut off is an easy way to damage or completely kill the battery. Your phone is set to shutdown before complete discharge for this reason. The full discharge then charge method was for NiCd batteries. This has no use for lithium-ion batteries.
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True, but the method of attempting to power back up won't actually drain it past the safe point. The point is bad calibrations (either from the factory or by an incomplete calibration) can cause the OS to shut the phone down prematurely during your new calibration run (before the actual safe cut off), resulting in the calibration being off scale. When you attempt to power the phone back on, if it is at the true safety cut off, it won't reactivate, where as if the calibration from before was skewed, it will allow it to boot back up and finish draining down to the safety cut off. This is in line with the reports of people having incorrect readings on battery %, where they have a low number, reset the phone, and suddenly seem to jump up 10 or 20%.
lobsterhead said:
@himmelhauk - I noticed in your signature that you have the Paul O'Brien fix... I saw in that thread that that noticeably increased speed/smoothness, but I haven't heard anybody talk about its influence on their battery. Have you noticed a difference in your battery life after making that tweak?
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I honestly don't know if it made any difference on battery life, as I did the battery calibration before I installed the fix. At any rate, I get much better battery life after the calibration for certain.
Sent from my LG-P999 using XDA Premium App
cbowens said:
True, but the method of attempting to power back up won't actually drain it past the safe point. The point is bad calibrations (either from the factory or by an incomplete calibration) can cause the OS to shut the phone down prematurely during your new calibration run (before the actual safe cut off), resulting in the calibration being off scale. When you attempt to power the phone back on, if it is at the true safety cut off, it won't reactivate, where as if the calibration from before was skewed, it will allow it to boot back up and finish draining down to the safety cut off. This is in line with the reports of people having incorrect readings on battery %, where they have a low number, reset the phone, and suddenly seem to jump up 10 or 20%.
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I dunno about this phone but I know the galaxy s can still be powered on after the safe shut off and drained completely. People were doing exactly that and messing their batteries up. I would hate for people to misunderstand your post and end up making the same mistake. So the LG doesnt let you power on after the safe shutdown unless its connected to a charger? If so thats pretty good. In any case its a lot easy to just use clockwork, terminal emulator, or any other app to delete battery stats once your charged to 100%. No need to drain first
regP said:
I dunno about this phone but I know the galaxy s can still be powered on after the safe shut off and drained completely. People were doing exactly that and messing their batteries up. I would hate for people to misunderstand your post and end up making the same mistake. So the LG doesnt let you power on after the safe shutdown unless its connected to a charger? If so thats pretty good. In any case its a lot easy to just use clockwork, terminal emulator, or any other app to delete battery stats once your charged to 100%. No need to drain first
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I hadn't heard about the Galaxy S phones having that issue. Like I said, I came from the Eris and this method was the way to go with that phone, so perhaps its a manufacturer dependent function. In any case, I agree that the cwm method is better, but I meant my post to be accessable by those who may not have taken that particular plunge yet, since it only requires root. Thanks for the info though; its good to know in advanced that the safety shut off being unavoidable isn't a guarentee on all phones (though frankly it should be).
EDIT: Not sure if I'm reading it wrong, but it sounds like you thought I meant to drain the battery before calibrating, which isn't true; all you need to do precalibration is have the charge at 100%. The only time I was suggesting to drain it is during the actual calibration run, so that Android has a full scale of your battery's range. If thats not what you meant, than ignore this edit. Just wanted to make sure I was explaining myself correctly.
Also, if you open your battery cover and look at the battery, it's not suppose to go above 40 degrees celsius, or 104 degrees fahrenheit. I found that the temperature often goes past this, especially when watching movies for extended periods of time, or playing games, which leads to a significant decrease in battery life because heat and li-ion batteries are not a good combination.
andonnguyen said:
Also, if you open your battery cover and look at the battery, it's not suppose to go above 40 degrees celsius, or 104 degrees fahrenheit. I found that the temperature often goes past this, especially when watching movies for extended periods of time, or playing games, which leads to a significant decrease in battery life because heat and li-ion batteries are not a good combination.
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You can use SetCPU to make a profile according to battery temperature and underclock it when it gets to 40 degrees or something. I have profiles for when the screen is off and for temperature.
lobsterhead said:
You can use SetCPU to make a profile according to battery temperature and underclock it when it gets to 40 degrees or something. I have profiles for when the screen is off and for temperature.
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What r ur temp profiles
Sent from my LG-P999 using XDA Premium App
So this is probably a big issue with most people is how fast the battery drains.
I'll get right to the point. I swap roms like I change my underwear... every couple of weeks... ( that was a joke...) basically every day. What I've noticed is what happens to my battery after swapping roms it tends to read the battery life incorrect. EVEN after a battery stat wipe.
I charge my phone to 100%. Let it drain until it gives me a battery warning. (which is usually below 15%) then I remove the back cover and just yank the battery ( I know there are risks of doing this but I've done it a TON and never had any issues)
Funny thing is though, right after I pull the battery and then replace and reboot the phone, my 15% battery life left... is now a crazy 25%-30% left!
So android is reading the battery level incorrect. (even after a battery stat wipe)
Anyways after putting the battery back in, i'll charge it to 100%, then use the phone as needed from then on I have NO issue with battery life and it usually lasts me 15+ Hours with moderate to heavy usage IE: games, browsing, music, Facebook, etc.
Let me know if this drastically improves or at least improves your battery AT ALL like it does for me...
Pretty common in most 1st posts for rom threads and a general calibration method. Thanks for sharing anyway
Sent from my Sensation using xda premium
Well according to the 10+ battery issue threads I highly doubt its "common" for people to actually do it. So for those who are looking for something other than stupid apps that claim to "re-calibrate" your battery, or battery stats which claim to "reset" your battery which in my experience really doesn't solve anything, its just one more thing to add to the "hell, lets see if it'll work" option.
Errrrmm... This is not the fix. Battery reading jumps up after reboot, as reported by hundreds of users (including me) and then depletes rather quickly to real value.
I have read every possible thread you can imagine on battery calibration and can never seem to do this correctly, is it a myth? No matter what I do, if I restart my phone, I end up going from 100% down to 85-86% EVERY SINGLE time.
This is after "bumping it". (letting it drain all the way to 0% and then fully charging again).
This is after using BATTERY CALIBRATION in the market which was told works well. (again, advises you charge to 100% then "calibrate" it via the APP).
This is after charging it to 100% and restarting it, recharging up to 100%, restarting and recharging (repeat, repeat, repeat), and then going into bootloader and wiping battery stats.
None of these have worked, does someone have a sure fire EXACT way to do this properly or is at ALL just hype? Help.
Your battery will never say 100% after a reboot. It sucks up a lot of juice on a power up and the battery doesn't charge during powering on. I usually drop about 10% on a reboot using the rezound battery. That is normal behavior. If you can charge to 100% with the phone on then you're fine.
Sent from my ADR6400L using Tapatalk
Interesting because I've never lost 15-16% consistently although I guess it using some juice to cycle makes sense. Anyone else seen 10+ every restart? Thanks for the help man in either case.
Hmm, never seen this before. On my phone which is running skyraider uc to 768mhz and uv only loses 1percent on reboot or doesn't even lose charge at all. Not sure why your phone is doing that.
Sent from my ADR6400L using xda premium
I am running G3D uc to 768mhz and on restart I may lose 1 - 5% at most depending on if i made any changes that take a longer restart. I bet you are overclocked? no need, under clock to 768mhz and your phone will run as smooth as 1.2mhz..maybe smoother while using less battery
Running liquid 3.2.1 on my T-Bolt with the Rezound battery and I only lose 1% battery at boot up. Never lost more...oh and I have never calibrated my battery. Also I get about 8-10 hours of moderate to heavy use too. All stock clocks btw
Just to double check - or reword... do it this way - if you aren't already.
Charge to 100%.
Wipe Batt stats
Drain to zero without recharging in any way (AKA let it drain until it shuts off on you).
Recharge until 100% (till it says 100%, not just "green."). And unplug.
And you're good! Try that and check back in.
Battery Calibration doesn't work
Ignore the % number, it means nothing. Use the battery monitor widget or another program that will show you the actual battery voltage. A fully charged battery will be somewhere around 4200 mV and a discharged battery between 3600 and 3200 mV. I've also noticed that the rezound battery throws things off as the mAh rating doesn't match up to either of the thunderbolt batteries. This is why the battery monitor widget shows the rezound battery as 2750 mAh instead of 1620.
What I recommend to my Evo peeps [which I have] is this:
-Charge battery to 100%
-Wipe battery stats in recovery
-Let the battery drain, so it manually powers off
-Charge to 100% again, and good to go
Battery Calibration doesn't work
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By this I mean Google Developers have came out recently and said battery calibration does not increase or have any effect on the state of battery life. All wiping the battery stats does is wipe the stats as to what has been using the battery, etc.
still handy for when you flash a new rom to wipe the stats, but it doesn't improve battery life at all.
smoody said:
By this I mean Google Developers have came out recently and said battery calibration does not increase or have any effect on the state of battery life. All wiping the battery stats does is wipe the stats as to what has been using the battery, etc.
still handy for when you flash a new rom to wipe the stats, but it doesn't improve battery life at all.
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Actually, the post from Dianne @ Google said nothing about calibration. She only talked about wiping or deleting the battery stats file.
You are correct, however all the battery calibration apps available only delete the battery stats file. So like I said it doesn't affect battery life.
wherestheboost said:
Just to double check - or reword... do it this way - if you aren't already.
Charge to 100%.
Wipe Batt stats
Drain to zero without recharging in any way (AKA let it drain until it shuts off on you).
Recharge until 100% (till it says 100%, not just "green."). And unplug.
And you're good! Try that and check back in.
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This is what I thought I had done but will do again. The problem is even after its 100% and in between your 1st and 2nd step when I reboot into recovery, it's no longer at 100% and sometimes down to 85%ish. I will try again tho, thanks!
http://rootzwiki.com/_/articles/wiping-battery-stats-is-pointless-says-google-r316
That pretty much says it. Wiping stats and calibrations are placebos.
l7777 said:
That pretty much says it. Wiping stats and calibrations are placebos.
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Yeah I read that too. But when I flashed my first rom on the tb I got abysmal battery life. 25% in like 20 min. I recalibrated and it got so much better. If its a placebo its a good one.
Sent from my HTC ThunderBolt using Tapatalk
all that says is the the deleting the batterybin file doesn't help. The battery is handled by each by software outside of android itself. So, following the battery calibration from the manufacturer of your phone still might help.
jefferyriess said:
Yeah I read that too. But when I flashed my first rom on the tb I got abysmal battery life. 25% in like 20 min. I recalibrated and it got so much better. If its a placebo its a good one.
Sent from my HTC ThunderBolt using Tapatalk
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25% in 20 minutes means nothing. The % is an estimated number. Find an app that reads the battery voltage if you want a true reading on the battery's charge. Full is 4.2 volts, dead is between 3.0 - 3.6 volts. Battery life should only be measured in hours from full to dead. I've seen my phone stick on 100% for several hours before as well as sticking at 20% for several hours. Ignore the %. Anyone spending all day looking at a % to judge their battery life should go back to a battery indicator that doesn't show %.
Just thought this was interesting and hadn't seen it posted elsewhere on the Sensation forum.
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
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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I understand the logic behind it, I do, but I've noticed massive improvements at times when doing this, but only when battery is exceptionally bad for no reason. It's not just a pseudo effect, and it's not just draining and charging the battery. I'm talking consistantly getting a few hours per charge, 3 or 4 full cycles, then I wipe stats, and boom, 12 to 20 hours.
So, I'm just gonna keep doing it, it doesn't hurt either way.
Ofc it does not improve battery life. No one ever said that. Only thing it does is let charge your phone to 100% like you would on a official rom.
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Send via the XDA app
Anyway I still erasing my battery stats ...
It was never suppose to improve your battery life, but give you more accurate reporting of how much battery life is left.
bobdelt said:
It was never suppose to improve your battery life, but give you more accurate reporting of how much battery life is left.
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im agreed with you... it doesnt improve the battery, but give more exact battery porcentage
Hi guys
I know this question has been asked many times before... whether to fully charge before using the phone the first time.
I believe this is something which stems from the time before Lithium-ion batteries.
However, I wonder if there is something with the battery stats which will be affected by turning on the phone before completely charging the phone?
In CWM there is a Wipe battery stats function... I was thinking if this was deleting some sort of info about the battery which was created the first time the phone is installed....
Some battery stats/calibration or similar is the only thing I can imagine which would benefit from having a full charge before first use. Can somebody enlighten me?
My girlfriend will be buying a new phone tomorrow (HTC Sensation on sale), and I would like to know first if their are any benefits to charging before first use?
Please don't just guess or come with comments like "I just used mine right away, no problems".
Thanks in advance.
BR, Martin
Dont need any calobration soft or fully charged battery. Use it as you need.mentioned soft for calibration is needed when you flash device with new Rom to reset old settings
Regards
Sent from my LG-GT540 using XDA
Fully charging the battery, without intermittently taking it off the charger, running it down fully, then recharging it fully is the best thing to do.
It needs a full charge before the first use so that the phone will understand what a full charge is but that's about it.
mArtinko5MB said:
Dont need any calobration soft or fully charged battery. Use it as you need.mentioned soft for calibration is needed when you flash device with new Rom to reset old settings
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"to reset old settings". When are these settings created? I'm thinking if the original battery settings are created at first boot on a brand new phone.
MissionImprobable said:
It needs a full charge before the first use so that the phone will understand what a full charge is but that's about it.
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How does the phone understand what a full charge is? Does it create some battery settings file at first boot?
If not, then I guess fully charging could be done while the phone is being used by the user?
I haven't become more certain from the above answers... I still don't know if the phone somehow does a calibration to the fully charged battery which could be a reason for charging it before first boot.
icepally said:
Fully charging the battery, without intermittently taking it off the charger, running it down fully, then recharging it fully is the best thing to do.
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no offence, but this is bull****. This treatment of battery was good for old mobiles and absolutelly not neccessary for smartphones. Don't mess with him. I didn't fully charged battery in first use, now on my gt 540 with optimized 2.3.7 can get 5 day on battery !
Don't be confused by battery settings, they are stored in system, you mustn't bother with that.
Fully charged means 100% shown on status bar, nothing more nothing less. System know how to treat battery, no need for calibration(it's needed only when changing ROM -> new system -> new treat -> need to reset old settings)
Your only task with battery is, once a month drain her to 0% and charged to 100% without abortion (but also not neccessary), and charging mainly when 30-40% of battery. It's not recommended to go under there values for good life of battery
Regards
Please use the Q&A Forum for questions &
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Moving to Q&A
mArtinko5MB said:
no offence, but this is bull****. This treatment of battery was good for old mobiles and absolutelly not neccessary for smartphones. Don't mess with him. I didn't fully charged battery in first use, now on my gt 540 with optimized 2.3.7 can get 5 day on battery !
Don't be confused by battery settings, they are stored in system, you mustn't bother with that.
Fully charged means 100% shown on status bar, nothing more nothing less. System know how to treat battery, no need for calibration(it's needed only when changing ROM -> new system -> new treat -> need to reset old settings)
Your only task with battery is, once a month drain her to 0% and charged to 100% without abortion (but also not neccessary), and charging mainly when 30-40% of battery. It's not recommended to go under there values for good life of battery
Regards
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I agree.
Fully charging and discharging was a practice to deal with the memory effect of older NIMH or NICD batteries.
Putting unnecessary charge cycles on todays cell batteries, just lessens their lifetime. They all offer an amount of charge cycles and each cycle reduces their capacity. The detailed amount of chargecycles that is sometimes in some infos, is usually something like after X amount of charge cycles the battery reaches 80% of its original capacity.
I'm not sure but i would guess that the phones determine the charge status through hardcoded characteristics of the used battery type, i.e. voltage dropoff etc. Fully charged at 4.22V, etc etc.
The batteries in our phones don't come fully charged is probably because storing these types of batteries at full charge for too long actually hurts them.
Storing them at something like ~3.8V is recommended for longer periods.
I'm no expert on this topic, so tell me if you find something wrong in my statement , i'm eager to learn.
Already proven
I wish I could find the article, but there was an experiment run on lithium ion batteries, particularly based on proliferation of mobile and these exact questions, where they ran down/recharged in different scenarios (different discharge percentages) until the battery went bad. They determined that the more you charge (the less you let it drain before re-charging), the more cycles your battery lasts. So it's as some have said, exact opposite of an old NiXX tech. This was done to < 10% increments, so they showed even a decrease in cycles between recharging at 95% and 90%
Moral of the story, don't let you're battery drain completely or even get too low, and charge as often as you can. This is why I use a dock on my desk at work.