Database Info

Another battery life thread...

Is there any way to get this thing to last over 10 hours with moderate/medium usage? I mean I hate to compare, but I was able to use my iphone 4 hard periodically through the day and be at 40% around midnight, but I have to stay using my captivate very lightly after about 10pm, and I usually unplug around 12 to 1pm..
I don't want to have to sacrifice majors perks of why I switched to android just to get a full day out of it. I've tried a lot of the suggestions I'm the forums, but nothing makes a notice difference, or makes it a fame changer as to where I'll get a full day of moderate internet/media usage
Thanks in advance.
Sent from my SAMSUNG-SGH-I897 using XDA App

Have you tried draining and recharging the battery as other threads have suggested? I usually unplug around 9-10am and I don't get battery warning until near midnight or later.

I keep seeing people complain about the battery life constantly.. but to me coming from my bb bold it seems that the battery is lasting way longer then i expected.. first couple charges i let the phone drain down till it shut off, and then charged it 100%.. its still new to me so im constantly playing with it and changing the menus around.. i try to make sure almost everything is closed when im not using it.. cause im sure that eats battery life..

asrrin29 said:
Have you tried draining and recharging the battery as other threads have suggested? I usually unplug around 9-10am and I don't get battery warning until near midnight or later.
Click to expand...
Click to collapse
I did it once, but I booted back up the phone a few minutes after I plugged it in, will leaving it off while it does a full 100% charge noticeably increase battery life?

Do you have widgets updating frequently? How frequently? Maybe just too many updating widgets. I get about 18 hours with the screen on for 4.

18 hours also
I'm getting 16-18 hours of use with about 4-5 hours of screen time. Better than expected.

Today I used my phone as much as I used my iPhone 4 on a regular basis. My phone has been off the charger for just over 12 hours and I have 70% of my battery left.

dbodom said:
I'm getting 16-18 hours of use with about 4-5 hours of screen time. Better than expected.
Click to expand...
Click to collapse
I'm around that too, I use a black background to save power and I have about 5-6 hours of screen time and I watch a movie on it every day (treadmill at the gym)
I only get low battery around midnight

I use advanced task killer and set it to when the screen is off to kill apps, aggressive mode, I can go about 20hrs before I need to recharge. 5-6hrs screen time.

djgleebs said:
Is there any way to get this thing to last over 10 hours with moderate/medium usage? I mean I hate to compare, but I was able to use my iphone 4 hard periodically through the day and be at 40% around midnight, but I have to stay using my captivate very lightly after about 10pm, and I usually unplug around 12 to 1pm..
I don't want to have to sacrifice majors perks of why I switched to android just to get a full day out of it. I've tried a lot of the suggestions I'm the forums, but nothing makes a notice difference, or makes it a fame changer as to where I'll get a full day of moderate internet/media usage
Thanks in advance.
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
One thing about android is it has true multitasking. Combined with some apps which do NOT close properly and continue to use up CPU this can drain your batter very fast.
In the battery Info your TimeSpentAwake should be ~ the same as Display on time. If not something is not closing properly. Use OSMonitor to check which program it is and either uninstall it or make sure to kill it with task killer after using.
I have the M110S (Korean Galaxy S - I get 16-18 Hrs with moderate use, but M110S comes w/ 2 batteries so i just swap )

Yeah based on people who are getting good battery life mine is absolutely terrible. I am on my fourth full discharge. I have had my phone off the charger for 2 hours and I'm already at 87 percent. I listened to about 45 minutes of cached slacker radio and like 2 posts on xda app
Sent from my SAMSUNG-SGH-I897 using XDA App

My battery went down 2 percent just posting that last post
Sent from my SAMSUNG-SGH-I897 using XDA App

I think I am going to have the phone switched out at best buy today
Sent from my SAMSUNG-SGH-I897 using XDA App

Just to comment on my battery life. I got my phone saturday (2.5 days ago) and its been on the whole time with medium usage. When I got the phone the pamphlet inside said "fully charge before you turn on" and thats what I did. My battery is at 41% and the only time that I have charged it since is when I am connecting it to my PC for a very short amount of time. I have had great battery life so it is possible. I am very impressed with it.

Yes...my battery life has been good...
Screen brightness all the way down (auto brightness off) *same for the browser brightness
Screen timeout 15 secs (annoying sometimes so maybe 30 secs)
No window animations
Power saving mode off (no point in having the lcd adjust if its already as low as it will go)
I also dont have any widgets that update in the background, however i'd imagine one or two wouldnt affect the battery much
These settings have worked out for me and i use the phone moderately with 2 hourly updating email accounts.....
Sent from my SAMSUNG-SGH-I897 using XDA App

Battery life for me has been decent. I consider myself a moderate user and I can go from 7:30am till I go to bed at night without dying, but its close. Coming from an iPhone 2G, where with the same usage I could get 2-3 days on one charge, its a little disappointing. But it is what it is I guess. I have heard horror stories of EVO's only going 4-6 hours on a full charge, thats ridiculous.
But what gets me is all this nonsense about fully discharging before charging back up every time. These are Li-ion batteries, they are not Ni-cads, they will not get a "memory" if you dont fully discharge every time. Yes, its good the very first time, to fully charge it before using it, but after that, it doesnt really matter.
Also, one more thing I noticed. The phone will stop charging the battery the second its fully charged. So if your phone reaches 100% charge at like 2am, it stops charging at 2am and you are then going from 2am till whenever you take it off charge in the morning. I noticed this the other day. As soon as the phone told me it was fully charged, the battery icon turned into a normal battery icon even though it was still plugged in. So its possible that the phone is going for 4, 5, 6 hours off charge before you even wake up. What I do to make sure I'm at 100% when I leave, is when I get up I unplug it, use it for a minute then put back on charge while showering. Then when I leave for work, I know its fully charged at 100%.

I guess I'll be switching out phones at Best Buy today as well. Phone keeps losing 30-40% overnight (more like 5 hours max since I'm a night owl) even with everything turned off. When I do get back to a 90% charge before I leave for work at 8am, I'm usually left with 30-40% by 5pm after 15 texts or so and a few emails.

I am fairly sure all new batteries have a chip in them that regulates the power. So you HAVE to run it down to 0-5% and charge it back too 100% several times before the battery is even calibrated for use. That has to be why its 50/50 battery sucks battery is great, just let it drain and charge it again.

battery life simply not acceptable
Hey guys,
I know many people post on battery life.
Here is my situation.
I do not care about beauty, but functionality is a must.
I am in the hospital from ca 6am to 7Pm and I have Q4 call meaning every fourth night its to midnight. That is simply a fact of my life.
My requirement:
I need my phone to last for this duration without recharge.
1.)
I don't need or use widgets
2.)
I don't need or use a wallpaper other than a solid black background.
I do need and use:
the GSM radio and wifi both need to run the entire time and reception is what it is.
My applications of use:
merck manual, dynamed, epocrates the usual in my boat.
I really really want to use this phone, but battery life wise only my blackberry with extended battery and my iphone 4 can hack it.
If any of you have any suggestions on what I could do plz let me know. My last resort is carrying two batteries, but that would frankly be admitting that this phone is inferior to the iphone 4 which can hack a 20 hour usage day in my setting.
(I absolutely cannot turn wifi or 3G off both must run)
I am open to all suggestions including the task killr controversy or anything else constructive one may have. Any extended size batteries out there for the captivate?
Thanks a bunch in advance.
(Having had my secretary spend 4 hours rooting the phone and sideloading Merck manual is a testament to the pathetic entity that is AT&T by the way. If you have professional apps from an institutional subscription you cannot download the software from the market...)
PS: My secretary is not exactly a hacker so forgive the 4 hour timeframe.

I consider myself to be a heavy user!! I like to text, browse the web, listen to music (either from my own files or streaming,) check email and comment on facebook all throughout the day. I did that perfectly fine with my Bold 9700, that battery lasted a full day or more.
I had an iPhone 4 and my battery would not last my 8 hour work shift!! I either had a bad battery or who knows what was going on with that phone. I didn't even leave the apps running...the phone was nice, but that battery killed it for me. I don't understand how some people got a full day out of it.
On the Captivate the most I have gotten has been around 10 hours of use and that's not even using it how I normally like to. I stop charging it at 8:30 and my battery is 100% around 10am I'm already in my low 90's or upper 80's. I don't have any widgets updating, I have a black wallpaper, I don't have the haptic feedback on, and I sync email hourly.
Could my battery be bad?? How can some of you manage to get 16 or so hours out of it??

Quick battery drain on standby

We need to be precise in what we communicate in order not to have misunderstandings. Many threads disagree on how good the battery is on th G2x. I agree that 6-8 hours of continuous use is great, that is if you're literally using nonstop, without having the screen shut off.The problem that many users are complaining about is that the battery keeps draining at a unacceptable rate even when the phone is just on standby. The excuse is that this is a smart phone and it has to ping the towers in order to receive calls.
Well my last smart phone was the HTC Shadow which was a Windows based operating system and the battery would never drain at 5-15% an hour just on standby. I did some reading on many sites, and the majority consensus is only android handsets have this huge battery drain problem when it's not being used but just on standby. So what gives? Is it because of google maps? Or some other google program that has to constantly access your phone even when you yourself aren't activley using it?
I've notice on my juice defender log that when I'm not using my phone it shows every few minutes something about accessing a schedule and data. What could this be? Back ground data? The only way I can get the phone not to drain excessivley when on standby is to put it on airplane mode. The bad battery drain when phone isn't being used has something to do with the Android operating system and the cellphones radio being very active even when not in use.

Factory Reset fixes that

agentdevan said:
Factory Reset fixes that
Click to expand...
Click to collapse
Believe me I tried resetting it twice, and it does nothing for improving the battery drain.
If any one has juice defender go to status tab and check your log. Even with the supposedly data turned off it'll show the the phone us accessing some schedule or data every few minutes.Maybe one of the knowledgeable developers can look into this and tell us what is happening and create a fix.

You may have a bad battery.
The battery that came with my G2x in the box (manuf. date of 2011-04-06) had the insane battery drain where I can watch it drop. I got a replacement thru Tmo (manuf. date of 2011-04-28), which has been outstanding.
Prior to the new battery, I lasted about 7 hours with moderate/heavy use. The new battery just clocked in at almost 16 hours the other day.

GideonX said:
You may have a bad battery.
The battery that came with my G2x in the box (manuf. date of 2011-04-06) had the insane battery drain where I can watch it drop. I got a replacement thru Tmo (manuf. date of 2011-04-28), which has been outstanding.
Prior to the new battery, I lasted about 7 hours with moderate/heavy use. The new battery just clocked in at almost 16 hours the other day.
Click to expand...
Click to collapse
We'll see, I just spoke to t mobile customer rep, they shipped me out a new one which should get here on the 3rd. Although, I didn't appreciate them charging me $10 for shipping. 16 hours of heavy use and I'll be content, if not I'm getting me the mugen 4500mah extended battery. So with o out you touching the phone how much percent does it drain in an hour?

jacob808 said:
We'll see, I just spoke to t mobile customer rep, they shipped me out a new one which should get here on the 3rd. Although, I didn't appreciate them charging me $10 for shipping. 16 hours of heavy use and I'll be content, if not I'm getting me the mugen 4500mah extended battery. So with o out you touching the phone how much percent does it drain in an hour?
Click to expand...
Click to collapse
Right now I'm at 99%, phone has been unplugged for 2hrs 34mins. I'm on wifi at the moment, but I would have drained anyway on the old battery with this same setup.

GideonX said:
Right now I'm at 99%, phone has been unplugged for 2hrs 34mins. I'm on wifi at the moment, but I would have drained anyway on the old battery with this same setup.
Click to expand...
Click to collapse
Do you have juice defender installed?

jacob808 said:
Do you have juice defender installed?
Click to expand...
Click to collapse
Yup, same exact setup with old and new battery.

I'll try when I have the time and patience for it, but maybe someone can perform an experiment by charging to full then just let the phone sit on standby until the battery dies. Do this with wifi, bluetooth, juice defender and gps off. Log how long it took to die, then run the same test again, but with juice defender turned on. If it can hold it's charge for 2-3 days I'll be very happy, but if it dies out in 16 hours just being idle and on standby then somethings wrong.

jacob808 said:
I'll try when I have the time and patience for it, but maybe someone can perform an experiment by charging to full then just let the phone sit on standby until the battery dies. Do this with wifi, bluetooth, juice defender and gps off. Log how long it took to die, then run the same test again, but with juice defender turned on. If it can hold it's charge for 2-3 days I'll be very happy, but if it dies out in 16 hours just being idle and on standby then somethings wrong.
Click to expand...
Click to collapse
JD only kicks in when I'm on cell data. With wifi on, it never activates I believe. Unless I'm looking at this wrong.

I was getting horrible battery life when I first got mine. I couldn't go 8 hours without it dying, and that was not even using the phone...on standby! I tried a toggle switch for data to turn it off and on when using it, but it still died. Next, I tried a 2g-4g toggle switch. Battery life is flat out amazing now. I can go almost 8 hours on a full charge and be on maybe 95%!!! I think a lot of it has to do with my office building and not getting the best reception. I would tend to bounce back and forth from edge to 4g all the time. Anyway, I use switch pro for the toggle widget, but give it a shot for a few days.

Switchpro only has a 2G/3G toggle. How did you get the 4G toggle or did you mistake what it was called.
Sent from my LG-P999 using XDA Premium App

I had a similar problem with my first G2x. With the screen turned off and in stand-by the battery would drain 15-20% per hour. I even bought 3 cheap batteries from China and the results were the same. I then had T-Mobile send me a replacement G2x. The new G2x drains about 1% per hour in stand-by. I even get 1% drain with the 3 cheap batteries. So it appears the problem was the phone. I had tried CM7 and Eaglesblood on the first G2x and it didn't stop the drain.

I had terrible life when first started, than I did the factory reset and the battery conditioning thing.
Took it off charge over 30 hours ago, it still has 10% left. Within that it had a solid 2 hours use of edge/3g/4g internet (Searching for towers as I was on a train). And a good hour of me using it on wireless for checking emails and browsing while at home and work.
Note that I have GPS turned off, and the phone is on a wireless network for almost all of its idle time. NO Juice Defender, no data stwitching, no rooting. Stock standard, although I did follow the advice here and not activate any of the TMobile apps.
Pretty happy with it now.

[Q] how to calibrate the battery for it to last longer??

i heard from my friend that HTC need to do battery calibration. is it true??

Don't think so. Another phone had a "calibration" routine but I haven't heard anything on this one. I tried the calibration routine from the other phone on mine and noticed no difference.

I really have a sucky battery life on htc sensation. I am trying to figure it out how I could get it to last for more than 12hours with average use...

I bought a replacement battery. http://www.amazon.com/gp/product/B0055QKZBS

While a lith-ion battery doesn't learn or have a memory, the battery does have a chip in it that needs to be calibrated. You'll need to cycle your battery from fully charged to fully discharged 3 to 5 times to calibrate this circuit. Normally a LI battery doesn't like to be fully discharged, so try to avoid doing this in everyday use. Better to give it maintenence charges. And heat is a big enemy of these batteries as well.
And seems to me 12 hours is pretty good battery life for a smart phone.

ickster said:
While a lith-ion battery doesn't learn or have a memory, the battery does have a chip in it that needs to be calibrated. You'll need to cycle your battery from fully charged to fully discharged 3 to 5 times to calibrate this circuit. Normally a LI battery doesn't like to be fully discharged, so try to avoid doing this in everyday use. Better to give it maintenence charges. And heat is a big enemy of these batteries as well.
And seems to me 12 hours is pretty good battery life for a smart phone.
Click to expand...
Click to collapse
+1, very well put.
2 points.
1. There are also battery stats on the phone, which need to be built by full charge/discharge cycle.
2. Discharge phone till it's dead with no fear, battery controller shuts it down when there is some juice left. It's like reserve in your tank, it shows you have petrol for 0 miles/kilometers, but in reality there is another 5 litres sitting in the tank.

I worked in the cell phone industry for a long time. The best thing i have seen for a full charge is to regulaurly do a full charge and than turnphone off and plug back in until indicator shows full again(if it shows full already charge for half to full hour). I have always seen better results. Also if rooted wipe battery stats in advanced before flashing any radio or rom.
Sent from my HTC Vision using XDA App

dunes20 said:
I worked in the cell phone industry for a long time. The best thing i have seen for a full charge is to regulaurly do a full charge and than turnphone off and plug back in until indicator shows full again(if it shows full already charge for half to full hour). I have always seen better results. Also if rooted wipe battery stats in advanced before flashing any radio or rom.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
This may easily be true. I think I read that the battery doesn't actually like being fully charged and that most chargers shut down early because of this. Maybe your tip has something to do with that. I don't know myself how that will correllate w/ calibrating the charge circuit that I spoke of.
Google is definately your friend here.

wrek said:
I bought a replacement battery. http://www.amazon.com/gp/product/B0055QKZBS
Click to expand...
Click to collapse
That's a very intersting battery you got here. It has bigger capacity than the original one. Does it have the same size? Were you able to fit it in and put the original cover back? Have you noticed a noticeable improvement in battery life or is it just scam?
I don't have the tmo 4g, I have the european version, but I believe it should work too, shouldn't it?

Out of the box.... Use it till it dies completely. Charge it 100% without interruption.
I've ALWAYS had great battery life on all my devices using that method.
Do that a few times a month when it's convenient....you'll have a happy battery.
Battery and DRIVER need to be conditioned/calibrated.
I get 12-16 hours with fairly heavy use. If you want more, ya need to wait for different battery tech OR get a dumb phone.
Asking for more than 12 or so hours is just silly with a device this powerful and a display this large. I'm not someone who likes to cut the balls off my superphone to save a few hours on battery life. I'd rather get 12 hours and use this phone the way it was intended too, than get 24 hours and have silly progs like Juice Defender running. Unless you know you're gonna be lost in a forest for a few days, don't most people have access to a charger sometime during their day

eadred said:
I really have a sucky battery life on htc sensation. I am trying to figure it out how I could get it to last for more than 12hours with average use...
Click to expand...
Click to collapse
Disabling the HTC Hub sync helped mine a lot.

My phone has been unplugged for 10 hours, I have 1h 17 minutes of display on time, taking 67% of battery. The rest is spread between Cell standby 11%, Wi-Fi 11%, Phone Idle 8% and Maps 3%.
It is now standing at 29% battery. I find that awful and can't believe any of you say it is normal. I have disabled HTC Hub and Sense sync and all the settings are pretty much the same as on my Galaxy S2.
On the SGS2 I manage to easily get 3 to 4 hours of screen time before the battery goes down to the thirties/twenties and a lot more heavy usage than I've managed on the Sensation. I'm on my second battery cycle and I really hope it improves because I'm very underwhelmed so far.

eadred said:
That's a very intersting battery you got here. It has bigger capacity than the original one. Does it have the same size? Were you able to fit it in and put the original cover back? Have you noticed a noticeable improvement in battery life or is it just scam?
I don't have the tmo 4g, I have the european version, but I believe it should work too, shouldn't it?
Click to expand...
Click to collapse
I found an even larger battery:
http://uk-batteries-galore.co.uk/HTC/32640-Sensation.html
I might wanna give this one a shot, but I am a bit afraid putting battery not manufactured by htc in my phone.

Guys if bothered to look in the Accessories thread, you'd see that there is 1900 battery which some people already have and are very impressed with it.
Sent from my HTC Sensation Z710e using XDA App

HTC QUOTE
Charging the battery
The battery is partially charged when shipped. Before you turn on and start using HTC Sensation, it is recommended that you charge the battery. Some batteries perform best after several full charge/discharge cycles.
I spoke to a HTC REP once regarding batt life on my DHD
He advised a calibration as follows for HTC phones
Make sure fastboot is off.
1. when your battery is low, do a full charge for about 8 hours, your light should now be green. once its full, disconnected the phone
2. Fully switch off the phone(pull battery out if needed then put in). and plug in charger again for an hour, the light will actually be orange even though it was green before you turned it off.
and your screen should load the charging icon for when its turned off.
3.once it is green, turn on the phone. (put in pins or passwords etc) leave the phone on for a minute, then fully turn off again.
4. charge again for an hour and your charging indicator should be green and your battery is calibrated.!

Spybreak said:
My phone has been unplugged for 10 hours, I have 1h 17 minutes of display on time, taking 67% of battery. The rest is spread between Cell standby 11%, Wi-Fi 11%, Phone Idle 8% and Maps 3%.
It is now standing at 29% battery. I find that awful and can't believe any of you say it is normal. I have disabled HTC Hub and Sense sync and all the settings are pretty much the same as on my Galaxy S2.
On the SGS2 I manage to easily get 3 to 4 hours of screen time before the battery goes down to the thirties/twenties and a lot more heavy usage than I've managed on the Sensation. I'm on my second battery cycle and I really hope it improves because I'm very underwhelmed so far.
Click to expand...
Click to collapse
With all due respect....how is that awful?? It's fantastic....
I think you're too caught up in the percentage number the stats page shows for battery use. It doesn't matter one bit if that graffic shows the display at 99.99%. As long as you're getting a full day out of your Sensation....isn't that all that really matters? Or am I confused by what bothers you?? Sounds to me like you're getting a full day...unless you don't sleep??
You've been unplugged for 10 hours and it seems as if you have another 2-4 hours left with that 30%.... Whats wrong with that? It's great.
This is not a Nokia 6133 It's a dual-core superphone, with a 4.3" qHD display.
Of course by the nature of the tech, amoled will be more efficient with regards to display...but as far as I can tell, the GS2 doesn't last any longer than this phone on a regular day to day basis under normal to heavy use.
I get 12-16 hours on a charge with fairly heavy use. Sync, WiFi, Calls, Web, GPS...nothing disabled or throttled.
I wouldn't get caught up with that % number in the battery stats....it's misleading....big time.
Condition the battery properly....you'll never have any battery issues...unless it's faulty.
Also people just need to be realistic with regards to battery life.... A gallon of gasoline will get you much further in a VW Bug than a Bugatti....

lunze86 said:
i heard from my friend that HTC need to do battery calibration. is it true??
Click to expand...
Click to collapse
There is an app to calibrate your battery, but you need to be rooted. Go to www.teamroyal.net and there is instructions that you MUST follow. Read up on it now so you can be prepared for when we get root. You also ONLY want to calibrate your battery once every 4-6 weeks, and only if it needs it. Doing it too often can fry your battery.
I know this doesn't directly answer your question, but I hope it will help many once we get root.
Sent from my HTC Sensation 4G using XDA App

ikhzter said:
HTC QUOTE
Charging the battery
The battery is partially charged when shipped. Before you turn on and start using HTC Sensation, it is recommended that you charge the battery. Some batteries perform best after several full charge/discharge cycles.
I spoke to a HTC REP once regarding batt life on my DHD
He advised a calibration as follows for HTC phones
Make sure fastboot is off.
1. when your battery is low, do a full charge for about 8 hours, your light should now be green. once its full, disconnected the phone
2. Fully switch off the phone(pull battery out if needed then put in). and plug in charger again for an hour, the light will actually be orange even though it was green before you turned it off.
and your screen should load the charging icon for when its turned off.
3.once it is green, turn on the phone. (put in pins or passwords etc) leave the phone on for a minute, then fully turn off again.
4. charge again for an hour and your charging indicator should be green and your battery is calibrated.!
Click to expand...
Click to collapse
for step 1 is it after 8 hours i disconnect the phone even though it will be green light earlier???

[Q] Draining battery on first use?

Hi guys
I should be picking up my SGS2 today and I was just wondering what exactly I should be doing with the battery? I've read in a bunch of places that draining the battery fully and then recharging it fully gives better battery life, but I've also read this:
Lithium ion batteries do not respond well to full discharge, you will see reduced capacity and early failure if it happens too often. In any case it is not possible to overcharge the battery on a BlackBerry because the battery and phone have enough intelligence to control the charge (unless the battery is already defective).
Click to expand...
Click to collapse
(this is from crackberry.com but you get the idea)
What's the best thing to do?
And on Android phones, when the battery indicator shows 20% or something, is that when the phone is going to die? Or will it die at 0%? Obviously at 20% it would be to protect the battery but maybe Android has been programmed to show 0% when the battery is actually at 20%.
Thanks,
Elliott

read manuals !!!!!! You can see this

Did not receive an owners manual with my phone. Anyway...phone is charging now so too late I guess...

Starholdest said:
Did not receive an owners manual with my phone. Anyway...phone is charging now so too late I guess...
Click to expand...
Click to collapse
The manual is probably stored on the phone, at least my new Ascend II came with its stored on the phone, you have to goto the big menu (forgive me for not knowing the technical term for it) to find it however

i got my battery fully charged...then in the first day i discharged it till 10% at least that's what my phone was saying
i read too that the new li-ion batteryes do not need to be "formated" (fully discharged till the phone dies and then fully charged with the phone turned off) in android case i think that thing is not posible coz it needs at least 5% to pass the bootloader and then begin to charge
anyway in my manual it says that the battery will begin the normal state after 8 days of use, until then it may disschage quick
i have a motorola defy

Calibrate the battery. Charge the phone while its switched off for about 6 hours, and then use the phone untill the entire battery runs out and it switches off on its own. After this, the phone should be able to use the battery properly.

i just used my galaxy and made it empty, then charged it full.
nowadays i have runtimes from 3days (72 hours) and then its @ about 5%

there seems to be a lot of back-and-forth regarding whether or not draining a battery is healthy; i drain my iphone battery down to zero about once a month and the battery has been doing fine for two years . . . whether it would be doing just as well without the draining time is anyone's guess.

I have always been under the impression that lit-ion batteries do not need any kind of special care or break in. But since our phones estimate the charge, we should occasionally let the battery run out to reset the calibration in case it gets screwed up.
Sent from my DROIDX using Tapatalk

I don't think you need to worry about draining the battery till it's dead. My phone dies often and the battery is still kickin It's my understanding, that the purpose of draining the phone before you charge it is to calibrate what the OS says for charge remaining to the battery's actual charge.
Or something like that...

Hi all,
I have my sgs 2 since June and it's working pretty well apart from the battery drain which is very harmful in my daily life
I've recently flashed the Cognition 1.30 (last friday). Before that, my sgs was able to last the entire day before discharging with a moderate use (10-20 mn on games, few sms, 15 mn consulting mails, 1 hr on internet). Since i've flashed with the cognition Rom, the battery drain is really awesome!!!!!!
I fully charge the phone (switched off) then when i switch it on and the phone stays idle, after 1 hr or so, i've already lost almost 20%. When i'm on internet or playing games, the battery loss is approximatively of 1% per min.
I've made a full wipe and recalibrated my battery so normally it should at least last a day and thats not the case.
Could somebody help me or should i buy a new battery and test it ?
Because i relly like this rom and from others users, it has a good feedback concerning the battery use

I actually like my Sensation, but I'm gonna have to return it

Kind of makes me sad though. The device feels good in my hand and I like it overall, but the battery performance is unacceptable for me. I went to bed with it having something like 93% (dropping from 100% after like 15min of play). Not even 6h later I wake up and when I look at it, the battery is already drained to 85% only from standby (Yes,always-on mobile data is deactivated, power efficiency is on). After playing with the unit in train and some browsing while commuting for 30min, its already at 70% or something. During the next few hours, while working, I was just checking mails, using whatsapp from time to time and writing a few messages. No surfing, no videos no games.
By 3PM the battery was at 15%. Even worse, the damn thing takes some 4h+ to fully charge. That's just too damn long, my iphone 3gs charges fully in about an hour. What is also very frustrating is that the Sensation discharges a good portion of its current as pure HEAT. Never saw a phone get this warm afer 15min of normal usage.
I knew battery wasn't going to be stellar but this just sucks. Most of all that a full charge takes 4h. fail :-/
EDIT: Ok guys the 2.3.4 update did the trick! The battery now chrages fully within 2h and battery life has ridiculously improved!
I took it off the cord around 8am this morning. Now it's 2pm and my battery is at 83 with some 46min screen time and slight usage. Also the heating seems to be gone.
Apart from that, everything runs smoother with the new update. Guess I'm gonna keep the little guy after all
However, I did order 2 extra Ankers + charger (25$!) as additional mobilty is never wrong.

Before you return it, I recommend that you call HTC support and request a warranty exchange for the phone and battery.
You may have a defective unit.
While my battery isn't stellar, I get a minimum of 10 hours before I drop below 20% life (always-on mobile data off, manual syncing, not too many widgets).
Your phone battery performance is not indicative of Sensation battery performance for the overall majority.

Most have said that the battery gets better after a few full charges/discharges, and the todays new update is supposed to improve battery performance. Many people say the Sensation is better than most other 4G phones.
I dont play games and such, mostly phone text and email and it lasts me a day and a half. There is also a better battery you can get.

That charging time is ridiculous, which leads me to believe that your unit and/or battery is defective.
Mine charges from 15% to 100% in 2 hours. Same for almost everybody elses phone.

You might want to reconsider and try warranty exchange mentioned earlier. Also, I would suggest the ChiChi battery. I'm running from 7:30 to about 4:00 with my WiFi hot spot turned on for my Galaxy Tab 10.1 and I'm using my phone for calls, texts etc., my battery still has about 30% left when I leave work.
Sent from my HTC Sensation 4G using XDA Premium App

Dude , custom rom and anker / chitec battery.
My first time with my new anker achieved almost 24 hours on battery and almost 4 hours screen time with quite alot of use during that time.
Totally destroyed my oem battery in every way.

Also I would do a Warranty Exchange and with the new update I have seen a big differance in 2.3.4 vs 2.3.3 in terms of battery life and speed of Sense in general. I purchased a Anker 1900mah battery for $10 and fully charged to dead I get on average about 17-20 hours and I would say I'm a good moderate to HEAVY! user. Switching back to a stock battery after calibrating with the Anker Battery has also improved battery life seeing that I get between 12-14 hours with stock now. I would charge to 100% go to bed and wake up with about 97%-98%
Sent from my HTC Sensation Z710e using Tapatalk

Pinball_ said:
Dude , custom rom and anker / chitec battery.
My first time with my new anker achieved almost 24 hours on battery and almost 4 hours screen time with quite alot of use during that time.
Totally destroyed my oem battery in every way.
Click to expand...
Click to collapse
+1 I agree 110%, Try this though Calibrate the Anker Battery then fully charge your stock battery and see what battery life you get.
Sent from my HTC Sensation Z710e using Tapatalk

Get a anker battery and download leedroid/android revolution/insertcoin. I guarantee you won't want to return it than. When I first got my device I was thinking about doing the same thing but after I looked through the thread I saw people were getting better results with the anker or chichi. Don't be discouraged that its a third party. It actually out performs the stock battery and embarrasses it.
Also download calibrate battery from the market.
Sent from my myTouch_4G_Slide using XDA Premium App

I had terrible battery life for the first week or so. 6 to 8 hours max, and 2 hours screen time if I was lucky. After conditioning the battery by fully discharging then fully charging on the AC adapter for a few cycles, it corrected itself for the most part. Yesterday I had 15 hours with 3 hours screen time and still had 20+ percent left. I have a chichtech battery sitting in my mailbox right now waiting for me to get off work.

ProximaC said:
I had terrible battery life for the first week or so. 6 to 8 hours max, and 2 hours screen time if I was lucky. After conditioning the battery by fully discharging then fully charging on the AC adapter for a few cycles, it corrected itself for the most part. Yesterday I had 15 hours with 3 hours screen time and still had 20+ percent left. I have a chichtech battery sitting in my mailbox right now waiting for me to get off work.
Click to expand...
Click to collapse
After I got my anker I sold my OEM and got two more. I also have a evo3d battery that I haven't used. I also have been hearing good things about it.
Sent from my myTouch_4G_Slide using XDA Premium App

really appreciate the good advice guys, thanks. I have done my bit of reading here and many many people here report having around 4h charge timr (http://forum.xda-developers.com/showthread.php?t=1154780)
So you guys can not confirm this? If so, it might be my battery is faulty. I will upgrade to 2.3.4 and calibrate. Probably will improve battery time, I doubt however it will reduce the charge time...

Something is definitely up. I just got my Sensation 10 days ago and am still stock. It takes me ~2 hours to fully charge, and that's with me using the phone like crazy while its charging....and the phone light on the entire time.
And I get a good full days use out of it....sometimes 2 days if I dont use the screen much and just phone text email.

IT'S ALIVE!!!
Ok guys the 2.3.4 update did the trick! The battery now chrages fully within 2h and battery life has ridiculously improved!
I took it off the cord around 8am this morning. Now it's 2pm and my battery is at 83 with some 46min screen time and slight usage. Also the heating seems to be gone.
Apart from that, everything runs smoother with the new update. Guess I'm gonna keep the little guy after all
However, I did order 2 extra Anker's as additional mobilty is never wrong, and with such an offer it was a steal:
http://www.amazon.co.uk/gp/product/B005DY4MAW/ref=oss_product

Also check if your phone is always awake because I had this and it had a huge affect.

I easily get 16-20 hours with LeeDroid's ROM.

i had the same battery issue with my first sensation. Even after several cycle of charging - discharging, battery calibration, the battery would not last for more than 7-8 hours. i exchanged it , for first couple of days, it didn't hold the charge for long,.but after i did battery calibration and update to 2.3.4, now my battery will last for 12 to 14 hours with moderate use. doesn't get hot with normal use, but over the weekend , i use map navigation and temp reached 48C. I think, i should not use it as GPS for longer than few minutes, or it may burn the phone.

Juice Defender Ultimate is definitely worth the tiny amount of money it costs. Just got just over 3 days on my Sensation, admittedly i hardly used it.
Usually i get a good 22 hours from it with medium use.

HTC sensation
Just replace the battery and you will see the difference.. my phone last ast least 10 hours.. its just amazing....

I lose almost no charge while it sits on standby.
I work 12 hour shifts, I listen to Music the entire time, browse, login to home computers for about 30 minutes using Teamviewer and keep up with RSS feeds throughout.
By the end of shift I'm down to 5%.
Sounds like you need a replacement, rather than a return, bud.