Very curious quirk On Android Open Kang Project ROM... Near Unlimited Battery!!!! - Android General

hi all...
soo after my comments over a week ago on the aokp website for this build, i decided afterall to take the plunge and update. i was on b26, so subsequently had to flash b27 and then this. everything has gone absolutely swimmingly with no issues at all so far....
HOWEVER>>>>>
I am faced with a very puzzling quirk. its by nooooo means a problem at all, infact it quite the opposite!!! let me explain.
i've started charging my phone in the evening these days for some stupid reason and then, when charged taking it off and going to bed. After getting this milestone on, my battery has been killed over night, draining to around 15%. Normally, it would drain to around 70% and be flat by the end of the day ready for charging again.
This continued for a few days when i decided to root out the cause of the massive overnite idle drain. I installed a fantastic free app called Badass Battery Monitor (which i highly recommend btw!), and over a period of a couple of days the offending app was weeded out. It was Nova Launcher. This had never happened to me before and couldn't understand it. So, as part of my diagnostics, I decided to confirm the findings by removing it and just using stock.
Over a couple of days monitoring, with exactly the same charging method, my battery levels returned to normal drainage with around 75% battery left by the morning. Fantastic. I had found the problem fixed it and got back to normal. Soooo where is the quirk i here you say!!!? lol Well......
On average, from everything i've read in forums, battery drain overnight while phone in standby is around 20/30%, so mine WAS right up there with the majority of you.
Last night, i decided to charge to full and then wipe battery stats. Which i did. Now, bare in mind here that I ONLY have the standard battery that is supplied with the Galaxy Nexus. I got up this morning, and to my utter amazement, my battery had only drained 2%
Now been incredibly realisting here based on average overnight drains, i was 100% sure that this was deffo an error. I have done everything from restarting the phone, taking the battery out, but still the level in my battery was saying the same.
As I sit here writing this, I have been streaming a radio station via wifi on the phone for the last 2 hrs, and atm my battery is telling me that it is STILL 85% full.
I am DEFFO not complaining, but i'm sure now, you can see why the hell i am so puzzled! HOW THE HELL IS THIS HAPPENING, because i can genuinely find no explanation at all for it

as a follow up, it is now more or less 5 hrs since my orginal post, and my battery is reporting that it is 75% full

Jeesh, 20 to 30 idle drain overnight? My phone drains about 3 to 5 overnight which is typically 8 hours of sleep.
Sent from my SGH-T989 using XDA

Interesting quirk. Are you a heavy or a light user? It'd be nice to see how it drains after a full drain and recharge.

Mrgadgetz said:
Interesting quirk. Are you a heavy or a light user? It'd be nice to see how it drains after a full drain and recharge.
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Click to collapse
well, to see if what was been reported was correct, i've been an absolute heavy user today. i have wifi on, ive streamed radio via internet for around 3 hrs, ive been playing all sorts of games and watched a few youtube vids. and my battery is atm reporting 74% life left

so here i am, STILL very very puzzled..
my battery life is just going and going with no signs of running flat... have a look at these screenshots and give me an explanation as to why i suddenly have a super battery!

MAYBE you really have a super battery or your mobile is glitched and shows the battery like that due to laG?

I'm on miui and I lose 0% overnight. It just depends on the ROM, but 20-30% is ridiculous!
Sent from my GT-I9100 using XDA

AOKP IS AMAZING
AOKP MS4 CM9, *goes all day without charging phone *

Ictcreations said:
so here i am, STILL very very puzzled..
my battery life is just going and going with no signs of running flat... have a look at these screenshots and give me an explanation as to why i suddenly have a super battery!
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Click to collapse
Your states do not seem super impressive. On most phones the screen is the biggest drain. You show 49% battery with a screen on of only 1 hour. After 33 hours you've only used your phone for 1 hour screen on. Thats VERY little.
I usually get 2.5-3 hours of screen on time for my galaxy nexus.

Ictcreations said:
I installed a fantastic free app called Badass Battery Monitor (which i highly recommend btw!)
Click to expand...
Click to collapse
Thanks for the app recommendation! Been looking for something like it all day.

This will depend on ROM/Radio/Kernel user installed programs/sync etc but 2-6% is normal drain over night anyone with 20% needs to seriously look @ battery stats and work out what's causing wake locks.
Also not forgetting most phones need to bed in after a flash which can take 2-3 days before we see real battery info.

Related

Battery life?

I just got the Captivate on Sunday so maybe it needs some time to settle in or whatnot, but I thought I'd make a post about its battery life. How's everyones experience with the battery so far? I love this phone to death, but it seems like the battery life sucks so far. It also seems to take a really really long time to charge up.
I have the display at 11% and haven't done anything with the phone at all today and I'm already at 80%.
3h 12m since unplugged. Says what's using my battery is:
Display: 35%
Cell Standby: 22%
Phone Idle: 15%
Bezier - Live Wallpaper: 7%
Android System: 6%
Advanced Taskkiller Free: 5%
Alarm Clock Plus: 4%
Android OS: 3%
I have GPS, Wifi, Bluetooth all off. Autobrightness is off, I just have it set to 11%.
80% after 3 hours of doing absolutely nothing to the phone doesn't seem right. I'm killing apps I'm not using and the only thing more I could really do is kill the live wall paper but it doesn't seem to be taking that much battery life and I really like it.
Any thoughts?
Also it seems to take like an hour and a half to get like 15% charge when plugged into an outlet. It just takes absolutely forever to charge it.
Yea my battery life is also draining really fast. It tells me that the screen is using 73% of the battery though....
Any thoughts?
Sent from my SAMSUNG-SGH-I897 using XDA App
bb12489 said:
Yea my battery life is also draining really fast. It tells me that the screen is using 73% of the battery though....
Any thoughts?
Sent from my SAMSUNG-SGH-I897 using XDA App
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When I first got it I used it till it died pretty much and then charged it all the way back to full. Wasn't sure if this was necessary or not, but I'm just pointing out that I did it. I have obviously been using it a bunch when I first got it, but now I'm not, trying to see what kind of battery life I have. I haven't done anything except look at the phone a couple times this morning. Haven't even run an app.
Yea same here. Im doing the exact Same thing. I unplugged at like 8am and right now im at 80%
Sent from my SAMSUNG-SGH-I897 using XDA App
I unplugged my phone about 3 hours ago and I am at 93% battery life.
I am using Juice Defender, and I kill all apps that I don't want open.
I actually think this phone has great battery life. It typically takes a few charge cycles for the battery to settle in. I abuse the phone a lot and it lasts all day for me. Compared to my tilt2 this thing has much better battery. I would suggest that you guys run the battery all the way down, and let it charge fully overnight a few days in a row, and you should see and increase in performance.
Current Battery: 74% Unplugged for 5hrs 14 minutes
Display: 41%
voice calls: 37%
standby:11%
Idle:7%
android system: 3%
madjsp said:
I unplugged my phone about 3 hours ago and I am at 93% battery life.
I am using Juice Defender, and I kill all apps that I don't want open.
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Click to collapse
I just installed juicedefender. Looks interesting. We'll see if it makes a difference.
Running down the battery to about 5 or 10 percent and then charging all the way up several times definitely helps. Its been almost eleven hrs since I unplugged and I'm at 73%
Let it run down and then charge all the way up several times. Worked with my phone.
Sent from my SAMSUNG-SGH-I897 using XDA App
My Battery Life on my bold was better but then it is a different phone and the battery was almost 2 years old but still worked great. Now my battery is at 22% and when I left a 8:50 am PDT, I pulled it off of charge, and I am playing music to intentionally get the battery down to 5% or less before I charge it. Not bad considering, I am constantly doing a ton of stuff, browsing, playing games, playing music the first time, and running google earth/maps as well as you tube videos.
Cheers,
Charlie
ive been unplugged for 2 hours and 27 minutes and im down to 67%
Haven't done much with the phone all day. Installed juicedefender. Left it on easy settings. Not sure how much it's helping so far, if anything. This is my current breakdown: 8h, 48m since unplugged... 35% battery remaining. Display: 45%, cell standby: 16%, phone idle: 10%, Live Wallpaper: 7%, android system: 5%, beautiful widgets, maps, speed test, android OS and advanced task killer 3%, 3%, 3%, 3%, 2% respectively. Still think it's not doing what it should. A good majority of the day I've left it in the off position, not messing with it. 30% by the time I leave work really kind of sucks.
I got the phone Sunday. Used the crap out of it Sunday and Monday and let it run almost down to 0% (it was warning me to plug it in) then let it charge to 100% which took hours and hours and hours. I remember when I had my Iphone down to like 60% when I left work I'd enable pandora streaming and plug it into the car charger and be back up to 85% by the time I got home at least, and it's a half hour drive.
When I plug it into the car charger or a regular outlet I'm lucky if it goes up 2% after a half hour. I'm starting to wonder if this thing has a bad battery.
cachookaman said:
ive been unplugged for 2 hours and 27 minutes and im down to 67%
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Click to collapse
What is your phone's uptime?
I've been unplugged since 6:45am this morning.. its about 2:40 now and I am at 73%.
I've been downloading apps, playing with androidVNC and just continually tinkering with settings.
My uptime is 111:40:00 and its been 7h 50m since unplugged.
I'm using launcher pro.
I have a bit of speculation that Touchwiz has something to do with it including its special widgets.
Something isn't right with that.
brandonb81 said:
Haven't done much with the phone all day. Installed juicedefender. Left it on easy settings. Not sure how much it's helping so far, if anything. This is my current breakdown: 8h, 48m since unplugged... 35% battery remaining. Display: 45%, cell standby: 16%, phone idle: 10%, Live Wallpaper: 7%, android system: 5%, beautiful widgets, maps, speed test, android OS and advanced task killer 3%, 3%, 3%, 3%, 2% respectively. Still think it's not doing what it should. A good majority of the day I've left it in the off position, not messing with it. 30% by the time I leave work really kind of sucks.
I got the phone Sunday. Used the crap out of it Sunday and Monday and let it run almost down to 0% (it was warning me to plug it in) then let it charge to 100% which took hours and hours and hours. I remember when I had my Iphone down to like 60% when I left work I'd enable pandora streaming and plug it into the car charger and be back up to 85% by the time I got home at least, and it's a half hour drive.
When I plug it into the car charger or a regular outlet I'm lucky if it goes up 2% after a half hour. I'm starting to wonder if this thing has a bad battery.
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Click to collapse
What the iPhone was doing is called a rapid charge. That 85% is not equivalent to an 85% charge that you would get from discharging from 100%
You should read this article.
hxxp://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
(replace xx's with tt)
mymansionisabox said:
What the iPhone was doing is called a rapid charge. That 85% is not equivalent to an 85% charge that you would get from discharging from 100%
You should read this article.
hxxp://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
(replace xx's with tt)
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Click to collapse
Fair enough. I'm very interested in checking out this article, but I've gotta run now. I was going to give the GPS one more shot on the way home. If I can't get a lock and the battery doesn't get much of a charge being plugged in the whole way I think I may take it back to the AT&T store and see if they'll swap it out or even give me a battery replacement.
Should I reverse the root before I do that, if I do? I know that's entirely off topic. Should I just remove the superuser permission app (if I even can)?
Additionally, just throwing this out there anyway, according to this review: http://www.boygeniusreport.com/2010/07/23/att-samsung-captivate-review/ their camera is awesome without any settings changes.. I find the regular camera kind of blows. I'll upload some pictures if anyone wants to see em, but I used my phone, on the basic settings, to take pictures of my Iphone which I was selling on ebay and the pictures came out kind of crappy, especially for being 5mega pixel. The video camera looks great, but the picture part of it I am really surprised at. My overarching point is I think there might just be some lemon phones out there possibly, and I think I might have gotten one. I'm running into all the major problems that some people are complaining about. Camera, GPS locking, battery, lagginess of the UI, etc. I think I'm gonna try to get AT&T to swap my phone out.
LIke said in other threads, mine just draining like crazy before but now it seems to be pretty bearable. Here are the things that REALLY helped me:
1.Completely drain the phone till its dead.
2.Fully Charge the phone with it off! Yes you can live without it for a little while
3.Disable the live wallpaper,
4.Use Launchpro and heaurisitc which is the vibration when the 4 buttons at the bottom are used.
5.Reduce vibration overall
6.Dim Screen
7.Turn off everything except I run wireless and fring 24/7 basically
AND this phone is fast,
I dunno if its available through the free launchpro, but I paid for the plus and its sooo fast.
1.I just disable all the animation crap and everything and make everything level 8 on speed of opening up
2.Disable the elastic animation when moving from screen to screen....
3. I would really suggest people pay for launchpro plus, cause its cheap and the work is almost gods gift to cell phones ahahhaa....
Hope this helps....
7am and now its 1PM with Wifi and Fring on since 10am and last checked its at 80% with a 15 minute phone call. and messaging probably 30 messages.
I am going to drain it till its dead tonight again and fully charge with phone off again. I think this helps a lot.
I unplugged my phone at 8:30...listened to an hour of Pandora, checked email, and was on Twitter...down to 85% at 10:30 which is pretty good to me. I also don't have a task killer installed for what its worth.
Sent from my SAMSUNG-SGH-I897 using XDA App
Well Update around 30 minuets my phone completely died for the first time so I am charging it now, and I am hopeful that it will get better soon.
HTH,
Charlie
Get rid of the live wallpaper, that uses quite a bit of battery
Sent from my SAMSUNG-SGH-I897 using XDA App
I just want to mention that I swapped out my captivate at the AT&T store yesterday. I let it almost die, then charged it to full, unplugged it for 5 minutes, charged it to full again, unplugged it for 5 minutes and charged it to full again and left it connected over night.
I've been using the phone all day today, changed settings, texted, generally used it, since about 6:45AM and I'm at 71% battery at 11:35. Insanely better. By a lot. With the old phone I'd be at 30 or 40% by now, honestly.
Additionally, the screen seems much brighter, even at the lowest setting. The camera seems to take better pictures and everything seems much snappier and quicker on the phone, by a lot.
I got the GPS to lock on once, and while it wasn't perfect, it followed me, and then I couldn't get it to lock again unfortunately, but I'll keep messing with it. I think it's a samsung update issue anyway, with regards to the GPS.
I really and truly believe that I got a lemon phone. I know that the AT&T store by me sold out on the first day so I definitely got this one from a different batch. This is like a totally different phone. If anyone else is having these kinds of problems with lag and battery life and things, try getting the AT&T store to swap out your phone. You have 30 days.
The iPhone and many other phones like the Droid charge faster for some reason.
From my Samsung Captivate

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.
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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
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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??

Foyo update...Battery life shortened ?

Has anyone noticed their battery life seems shorter since the update ? I installed the official froyo update last night and it seems I'm running out of juice much quicker than before.
At first mine ran down faster. I ran it all the way down. Charged it. And ran it all the way down again and charged. It seems back to normal.
I didn't have any issues. Maybe you changed something else as well? Could always try a few recharge cycles and see if it stabilizes..
I was running the leaked 2.2 and I flashed to official 2.2. My battery life is almost double what it was. I can't complain one bit about battery life, although I have other gripes with the official Froyo release.
I'm with icepop on this one.. I was running the stock rogers rom pre-update and now with the official rogers 2.2 I'm getting at least double the use before having to charge again.
I'm having battery issues with the new stock Froyo. I lose a huge amount of juce when in standby. I thought I may have my widgets updating too often so I charged it up and put it into airplane mode last night. The phone lost about 1% per hour in airplane mode. IDK what is normal but that seems like a lot to me. I didn't have any apps running, except my alarm was set for the morning.
I have SystemPanel installed and my cpu load NEVER goes below 10 percent, even in airplane mode. I suspect this is a large part of the issue. In app history, system and system processes are always on the top of the list and are around 3% each. IDK what controls this or how to lower it. I would love some feedback from someone else with SystemPanel just to see how our numbers compare. Overall the battery life I'm experiencing is pretty terrible and a buddy of mine's Fascinate has much better battery life (hence something must be wrong somewhere). He and I were skiing all day over the weekend and when we got back to our cars, my phone was half dead and his had lost almost zero juice. This displeases me.
mine's was better actually. but i didnt stayon it for long
My initial results with 2.2 were very bad (10% drop per hour when idling). I reset the phone back to 2.1 then re-installed 2.2. This did not help. Now I did this again (2.1 then 2.2) but this time I have not re-installed my apps and have not rooted (yet). So far, battery life seems to be normal. I suspect that some of my applications might mis-behave when installed on 2.2. I am planning to add them slowly and watch the battery.
Not here, seems the same to me
Mine is terrible ! I don't know what it might have been on 2.1 as I upgraded fairly quickly. Essentially I charge all night and then disconnect from power at 6:30am and then by 4:30pm I'm out of juice (phone shuts off). Any ideas here? I'm not running anything extravegant (email only) and hardly make any calls.
Whenever you flash to a new ROM, wait for at least a week of normal usage before you judge the battery life. The reason is simple, your battery stats are reset after ROM flash and your new OS needs time to learn how your battery drains before it can give you accurate readings.
If you can't wait for that long, you need follow the battery calibration thread to force a manual calibration of the battery.
I'll give it a week and see how it is then. Definitely is draining much quicker now though. I think It acted similiarly when I first got the phone as well. If I recall correctly the batter life sucked when I first got it, but then a week or so seemed to get much better.
I did the manual battery recalibration (let it die, charge while off, turn on and bump charge...etc). Last night I lost about 2.5% of battery per hour while in standby. This seems improved since calibration but its still pretty terrible IMHO. Is this in line with the amount of drain other are getting or am I draining more than usual?
TheSopranos16 said:
I did the manual battery recalibration (let it die, charge while off, turn on and bump charge...etc). Last night I lost about 2.5% of battery per hour while in standby. This seems improved since calibration but its still pretty terrible IMHO. Is this in line with the amount of drain other are getting or am I draining more than usual?
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Running stock since purchasing the Captivate back in August, and so far battery life actually seems to be routinely as good if not better than 2.1. I must admit I didn't use my phone a huge amount yesterday (except for about an hour plus of downloading a bunch of wallpapers off Zedge for some ungodly reason lol), and after 18 hours of the phone being on I was still over 50% battery life left. 2.5% in standby doesn't sound like all is well - you must have something running in the background or similar issue. I have a live background, sync 5 e-mail accounts (granted, only one of those is every 15 minutes - the others are every thirty minutes, every hour, and once a day on two of them), and with light use I am getting over 40 hours with 2.2 so far (about in line with 2.1, but seems maybe just a little better). Heavy use I am dropping more like to the 12 - 18 hour mark (heavy use for me means the screen on more than off, actively playing games or using apps, large amounts of texting, etc. Solid game playing I haven't figured out a drain yet, but on some games it seems like I can drop almost the whole battery in close to 10 hours). At your rate of 2.5% per hour in standby you would only make it forty hours without even using the phone. I have been using mine just a little this morning (FB check, logging in to one of the desktops at work remotely to make some changes, live background running, WiFi sleep policy is set to when screen is off, but to be honest that is about it) and I haven't moved off the 100% mark yet and the phone has been unplugged over an hour and a half.
All that said though, as other users have stated you might want to give it a little more time for the system to recalibrate the battery usage. I would definitely check your processor usage though regularly to see if anything seems 'off'. One thing that caused me problems was that my SNS service would be running but then would get stuck in a pattern of 'Restarting' - would drain my battery rapidly.
It has been said that bettery drain is not linear. First 5% goes real fast. So, you need to judget the average over a day of use, not first hour or so. I'm still in first week of ROM flashing. So I can't confirm anything yet.
See my battery stats recalibration steps here:
http://forum.xda-developers.com/showthread.php?t=765656
Also, TheYar has a great write-up on identifying battery drain issues here:
http://forum.xda-developers.com/showthread.php?t=806211

[Q] How is the battery life on your transformer

Post your battery usage on your transformer, and how much juice you are getting.
Mine looks like it's draining much.
Sent from my DROIDX using XDA Premium App
I had 100% battery when I started using it last night at 4pm used it heavily from then until about 830, which included the firmware update and some angry birds and I was just under 50% by 10pm after 1.5hrs of standby. Didnt plug it in until i left for work after some browsing this morning andwas at 35% then. Hope that helps!
I have an ipad 2 and a transformer and par to par my ipad 2 last longer, but I love honeycomb and it's probably due to the fact that we have real background applications
Sent from my DROIDX using XDA Premium App
For my first charge, I wanted to charge it up and then run it down until it died to calibrate the battery. It lasted a good two days, probably 9 hrs of pretty heavy use as I goofed with it constantly. It was hard to get it to finally die, I turned the brightness up all the way and kept it alive to kill the last 5%.
It was draining pretty quickly at first but it improved over time, specially after the first FOTA.
I've been using it on and off over the past 3 days and it has just over 40%.
brachiopod said:
For my first charge, I wanted to charge it up and then run it down until it died to calibrate the battery.
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Just wondering do we really need to run it down till it dies and then do a full charge?
dazz87 said:
Just wondering do we really need to run it down till it dies and then do a full charge?
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Click to collapse
I dunno. People are all over the road on this, so I'll just give you my opinion. I don't think that full discharge of lithium ion batteries is good for them. These aren't the old fashioned NiCd batteries where that was true. The more you use your lithium battery, the shorter it's life. There are people that say otherwise. That said, on an Android machine, I think that the battery calibration needs to see the full range of the battery to be accurate; and it is worth one full cycle to get things working. That's why I did it. I'm not recommending that anyone else do it, that's just what I did with mine.
I thought mine was draining fast at first but I'm on about 32 hours since it was plugged in to get its full charge. Of that a solid 3 to 4 hours of use easy. Currently at 19%
Sent from my Transformer TF101 using XDA Premium App
Wouldn't it take a couple of discharges and recharges before the battery gets conditioned?
The other day it was on 100% brightness and light usage I think I got 6 hours out of it. 5 hours in use I'd say. Max brightness and touch intensive stuff like angry birds and playing w/ it FWIW. I'm sure at a lower brightness you could get close to the 9 hour battery life. On the other hand before work I unplugged it at 100% and it sat in a 40 degree car from 7:00am to 5:00 pm and only fell down to 94%.
Asus does recommend a series of full discharges and then basically keeping it topped off from then.
I've been using it almost non stop since 8:00 pm, when it was fully charged. Now, it is 3:00 AM, and at 42% battery life. If it keeps going at this rate, I should have over 10 hrs of battery life. It is on auto brightness. I've been using it to study pdf powerpoint slides, playing some angry birds, and surfing the net with firefox. During the longer studying sessions, I used airplane mode. That probably saved battery life.
I left my transformer fully charged last night and turned it back on this morning to find the charge at 55%.
Didn't seem to be any background apps running that could have accounted for the charge drop, though my wifi was stuck off requiring a reboot to turn it back on.
Anyone else with similar experiences?
den997 said:
I left my transformer fully charged last night and turned it back on this morning to find the charge at 55%.
Didn't seem to be any background apps running that could have accounted for the charge drop, though my wifi was stuck off requiring a reboot to turn it back on.
Anyone else with similar experiences?
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I am having the same issue. Last night I had 42% when I put it in sleep mode. This morning tried taking it out of sleep mode and the tablet reboot some time last night Weird. When it came back on it was down to 22%. Dont know but I am getting horrible battery life. Started using it at 10pm last night and by 1 am it was at 45%. Had on auto brightness All I did was surf, and stream music from my server. Maybe I need to drain it down tonight......
dazz87 said:
I am having the same issue. Last night I had 42% when I put it in sleep mode. This morning tried taking it out of sleep mode and the tablet reboot some time last night Weird. When it came back on it was down to 22%. Dont know but I am getting horrible battery life. Started using it at 10pm last night and by 1 am it was at 45%. Had on auto brightness All I did was surf, and stream music from my server. Maybe I need to drain it down tonight......
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That shouldn't happen. Maybe try turning airplane mode on before you go to sleep? Or maybe you need a task manager?
Attached an image of my battery life. I definitely got around 11 hours on one charge.
As for recharging, it seems to recharge to full in 2-3 hours.
I'm finding that during actual use, my TF is doing about as well as my Xoom. However, the Xoom is using MUCH less battery while on standby. Where the TF is burning around 2.5-3%/hour on standby, the Xoom burns <1% on standby.
I'm still on the original build (i.e., haven't had a single update applied) and as noted earlier in the thread some things might have been optimized. And, I'm still burning on average around 3.5%/hour, so that still translates to over 25 hours battery life. Not as good as the Xoom but still pretty decent.
If it gets a little better in standby after an update, though, I won't complain.
I got 9 hours 34 minutes of CONSTANT use. For 4 hours straight I was running a flash application constantly.
I'm doing my second batter run down right now with normal usage.
When mine worked, I used it for nearly 2 hours straight on wifi with the screen on Auto, playing games and browsing the web. It drained 20% extrapolating such I'm getting the 9.5 hours of constant use WITH games. I was pleased until my screen failed on me
When you all drain the battery, are you taking it all the way till it powers itself off or plugging in at a low power state?
Sent from my Transformer TF101 using XDA Premium App
i don't have exact times but on my first charge it drained fairly quickly and was below 15% in maybe 36 hrs? with my xoom the first charge lasted 5 days! so in comparison as of right now the xoom had better battery life, but people are saying it gets better so we'll see. i don't mean this as a complaint at all because it doesn't bother me to charge it and i love this tablet. just something i have noticed.
i might add that these times i have given are just browsing, using a few apps and games, but no movies are anything.
aftre seeing a couple other posts in this thread it seems the xoom may just be getting much better standby time.

Going nuts!! Battery...

Have to charge almost twice a day... I believe it happened after latest 1.45.531.1 update....
Disabled all animation, got auto adjust for display, disabled all what I could.. Still gives me 12 -16 hours on standby only....NOT even using the phone!!!!
Does anyone have something like that??? Or there is some remedy I skipped?
Sorry if I repeat someone's question.
Running full stock, HTC battery.
Thanks in advance!!
Tester.
PS. Recently exchanged the phone.... First one R.I.P......died completely, didn't even charge.
Is there a chance they swapped a refurbished one on me??? How to find out???
can you provide a screenshot of the battery usage graph? also, have you tried getting an aftermarket, bigger battery such as the anker?
I was the same way as you. I checked my battery graph, and standby was using something like 80% of the battery with almost everything turned off. By the time I got home from work I would need to charge it immediately. I bought one of the Anker batteries on Amazon for $15 bucks or so, and I'm now getting about 2 days for a charge. I don't know what it was with my battery, because it sounds like my experience wasn't typical, but I didn't really feel like going through HTC when I could just pay the $15.
I'm with ya...
This phone was running PERFECT prior to the HTC update. Now I'm having a plethora amount of problems, including the battery. For example, prior to the update I would get 13-16 hours on HEAVY usage... Moderate usage? Try a day or day in a half. Now take today for example, I unplugged my phone a little before 7am and I had 20 something percent 4 hours later.
I'm telling you, that HTC update really messed this phone up IMO.
Thanks, guys!!
Will try to get Anker battery, I believe it's 1900 mAh.
But again something running on the background with that update. We'll see.
I'll try to get the graph, maybe someone'll get some sense of it...
Much appreciated,
Tester.
here are the battery stats...
Display..........74%
Cell standby...13%
Phone idle......11%
Voice calls......2%
THAT'S IT!!! Nothing else is running...... SUX...
Still gives 12 - 16 hours of life on almost idle......
I hate to say it,but if you're battery's dying a lot faster after an update,a bigger battery won't help much.
I'd be getting in touch with HTC and ask them what the heck is going on.
Really annoyed with the battery performance. I checked and only display is using 90% of battery. Tried everything to reduce it but no change.
Sent from my HTC Sensation Z710e.
Tester30 said:
Have to charge almost twice a day... I believe it happened after latest 1.45.531.1 update....
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Click to collapse
I've had the same issue since the update. My battery drains at a ridiculous rate. I've become really frustrated with the phone since. I rooted it and flashed a custom ROM in hopes of solving the problem but it's the same deal.
I've confirmed it's not the battery either since I've got another one I've tried and only get the same results. Even with Juice Defender running I get nowhere as great a battery life as I did before the update
I'm doing decent 8hrs 20,mins on batt. With 40% left mostly text and internet browsing
Sent from my HTC Sensation 4G using xda premium
Try clicking the graph at the top of the screen it will give you another screen that shows awake/screen time etc. Is your phone going to sleep when you screen turns off?
I was having the same problem and realized that some app was keeping my phone awake even though the screen was off. I uninstalled 80% of the crap I had installed and now my phone sleeps like it should and battery lasts amazingly long time.
Tester30 said:
here are the battery stats...
Display..........74%
Cell standby...13%
Phone idle......11%
Voice calls......2%
THAT'S IT!!! Nothing else is running...... SUX...
Still gives 12 - 16 hours of life on almost idle......
Click to expand...
Click to collapse
anurbanlegend said:
Try clicking the graph at the top of the screen it will give you another screen that shows awake/screen time etc. Is your phone going to sleep when you screen turns off?
I was having the same problem and realized that some app was keeping my phone awake even though the screen was off. I uninstalled 80% of the crap I had installed and now my phone sleeps like it should and battery lasts amazingly long time.
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Click to collapse
How can you tell if your phone is going to sleep when you lock the screen? What is a good method for this? And if I find it its not sleeping when it should, is there a way to find the culprit easily?
Sent from my HTC Sensation 4G using XDA App
_DavidWebb said:
How can you tell if your phone is going to sleep when you lock the screen? What is a good method for this? And if I find it its not sleeping when it should, is there a way to find the culprit easily?
Sent from my HTC Sensation 4G using XDA App
Click to expand...
Click to collapse
Click on the graph in battery stats, it should show awake time and screen on. If your awake time is constant when the screen on time isn't, then chances are you've got an bad app somewhere preventing the phone from sleeping
my battery life was plain **** on 2.3.3., device was running hot all the time (=waste of energy), charging took ridiculous 4h+! When I took it off at the charger around 23:00 the battery was dead at 14:00 the next day with most time being idle!
Since my update to 2.3.4 things got so much better. charging takes around 2h and battery finally lasted a whole day and had 40% juice left in the evening.
Since I got my 2 Ankers+charger for 20$, battery life is crazy now. Been on one charge for 2d2h and still had 16% left. Pushmail on, wifi on (cellular data only when not at home), brigthness at 100%, taking video, pictues and some navigation, messaging and phonecalls. Oh yeah and a few minutes of flashlight use
I would say between slight and medium use.
If 2.3.4 worsened your batterylife, contact HTC or your vendor.
I now replaced the battery at 16% with the other Anker because I still need to do my 5 charge cycles on that one to calibrate it.
Here's an example of the graph. At the bottom you can see awake and screen on time. I pulled phone of charger last night, did some browsing, then ran for an hour with music playing in the background (you can see the small green bar on awake even when screen is off). After I surfed a little and left it off the charger when I went to bed. The phone is properly sleeping when the screen is off and almost 16 hours and still have 62%.
Before I uninstalled the apps, the awake time was solid green across the screen.
Anker battery worked wonders on my device. Before I would have to throw it on the charger after lunch as I like to go for a beer after work and the stock battery would never make it that far... Now when I get home from the bar I still have ~30% battery. Anker battery FTW!
flash a custom rom and u will go gaga over ur battery life. definitely works for me. on standby overnight drain 0-1%.
I found out that if you don't have strong signal at your location your battery drains pretty fast that's why I always connect my phone to WiFi at my apartment where my phone looses signal sometimes. now I lose just 1-2% of power during a night.
Sorry to hear about your battery troubles. A couple days ago I rooted and switched to "Android Revolution HD 3.0.4" and my battery life seems pretty solid. I wasn't having battery life issues prior to this though.
I'm currently in the process of calibrating the battery:
- drain it mostly
- turn off
- plug it in overnight while still off
- in the morning unplug, wait 15 minutes, replug for a few hours; do this ONLY ONCE or you may damage the battery
- power on, immediately go to recovery, advanced, reset battery stats
- start normally
- drain battery until it shuts down; a continuous stress test or stability test app is probably ideal
- once it shuts off, turn it on again to double-check that it's dead; it should only come on for a second or two
- while off, plug in and allow to fully charge; no fooling around with plugging/unplugging, just normal
- calibration complete!
I think you can follow a similar procedure (minus clearing battery stats) to refresh the battery calibration even without rooting/custom recovery. I've read the effectiveness is similar. The phone just needs to be retaught what "full" and "empty" mean, all in one charge cycle. If you calibrate it wrong you could have issues with it shutting off while still reading ~15% battery life.
Anyway, as I said, I'm in the process of doing this. Currently I'm in the "drain it" phase... with my screen at maximum brightness (remaining on), overclocked to 1.5 ghz, I've been running "StabilityTest" (from market) for one hour and fifteen minutes. It stresses both cores as well as the RAM. At this time, my battery is at around 30-40% or so, and it's getting really hot! The phone's temperature is reading as 54.8 degrees!
Also, yesterday I used the GPS for about 4 hours before it died, this was prior to any calibration attempt. I think this is within typical battery life considering that the screen stays on.
TL;DR: Maybe you just need to try a custom rom or recalibrate your battery. Miscalibrated battery can be caused by flashing/updating a rom, I imagine even when it's an OTA. Sense is crippling your phone anyway, you might as well give it a try IMHO.
get yourself an anker battery..I havent charged my phone since the day before and now i have 20% left! heavy usage
Sent from my HTC Sensation 4G using XDA Premium App

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