Database Users

Is constantly killing apps bad for battery life?

I was wondering, if I constantly am killing running process and they are always reloading (voice input, settings, gmail, market, etc), will this drain my battery faster? I'm at 76% with light use from a full charge and the phones been unplugged for around 4 1/2 hours.

That seems normal. mine usually dies within 6 hours, with all settings off. i think i need a new one. under battery settings it says display used 67 % of my battery life and for display time on it says 28 minutes

I've got my display using 73% followed by live wallpaper with 6%.

I mean Display% being higher just means you were actively using your phone more... or you set your timeout too high.
I don't think the actual restarting of the apps uses more battery vs them just running in the background all the time. Unless for some reason they restart almost instantly and you are constantly mashing the kill all apps button then maybe?
As far as your phone dying in 6 hours, that does not sound right at all. Mine definitely goes quite a bit longer than 6 hours consistently. It is currently at 38% battery after 17 hours 24m, with display having used 46% with 55m24s on. Part of that was while it was full brightness when I was outside. I have been at work though so its largely been sitting on my desk. Even when I first got it and was playing with it a ton it went well over 6 hours on a charge.

Some people do seem to have problems with battery life and I can only assume there's a bunch of bad batteries out there, or they are really hammering it..
I used about 25% in 6 hours today from normal usage* and that's even after driving around for half an hour streaming last.fm over bluetooth via 3G.. Sync switched on, wifi off, twitdroid running in the background. The only special thing I have is the setcpu idle tweak.
* Fair bit of browsing, some twitter, the usual 'ooh look you have a google phone' impromptu demos..

I dont get it........BATTERY DOESNT LAST FOR ****!

So i noticed on my stock battery i get about 10 hours of battery life, when im really not even using it at all besides checking it on my breaks or lunch. For instance i had a full charge at 4:07 pm , disconnected and now have a 70percent charge at 5:44..? really WTF is going on with this phone..? I havent done **** on it but browse. I even bought the verizon extended battery and that thing doesnt last as long as i thought, it dies down in about 8-10 hours tops as well.. Is there something im missing here?
I dont run gps often and neither wifi or bluetooth. Just texting and getting online every now and then....
i do have advanced task manager and do notice almost every program running all the time although i kill it when the programs when i jump on my phone....is this normal? wtf is going on with this thing?

Ghxoxst said:
So i noticed on my stock battery i get about 10 hours of battery life, when im really not even using it at all besides checking it on my breaks or lunch. For instance i had a full charge at 4:07 pm , disconnected and now have a 70percent charge at 5:44..? really WTF is going on with this phone..? I havent done **** on it but browse. I even bought the verizon extended battery and that thing doesnt last as long as i thought, it dies down in about 8-10 hours tops as well.. Is there something im missing here?
I dont run gps often and neither wifi or bluetooth. Just texting and getting online every now and then....
i do have advanced task manager and do notice almost every program running all the time although i kill it when the programs when i jump on my phone....is this normal? wtf is going on with this thing?
Click to expand...
Click to collapse
Check for things updating frequently like twitter. Also don't kill them apps they will restart using battery to start it. Just let them run, they actually hibernate till needed.. don't close them.. that's probably killing your battery.

There is a lot of bloat ware that runs in back ground unless you root and uninstall. That is the one think I hate about these phones. I wish I could uninstall the bloat ware with out rooting. Anyway download advanced task killer and set it to kill programs whenever screen is blank. It will save some battery life. I get a day out of mine easy and I talk for at least an hour text at least 20+ a day, have it auto check every 5 min for 2 emails and have quite a few widgets running and surf at least 10 minutes...

I was really hating the battery at first. So much that I bought two non oem batteries from ebay. However, since I rooted AND loaded leaked froyo AND loaded deodexed, re rooted froyo leak through koush's recovery, I am getting through the day with 30% or more when I plug back in at night. The only extra charge is in the car dock for 30 minutes on my ride home from work. Try those steps, and rename bloat. Get rid of atk. I get much better battery life without it.
Just my experience, hopefully you figure it out. I'm a fairly heavy user and love this device.
Sent from my DROIDX using XDA App

Is your non oem batts not draining to 10% and lasting like its 50% still??? I have those ones from hong kong!
Sent from my DROIDX using XDA App

I have had battery issues in the past. Now I am making it through the day comfortably. I am at 12 hours and 45 minutes and have 40% battery left. That is with wifi on all day. I am not using any task killers. All I did was calibrate the battery. Here is the link I used and it works great. DO NOT DO THE VARIATION. IT DIDN'T WORK FOR ME. Do the long version.
http://www.goodandevo.net/2010/08/h...ry-and-possibly-double-your-battery-life.html.
Sent from my DROIDX using XDA App

Also those china batts go to 10 percent in about 5 hrs but last for another 5...its odd but they are my backups anyway.
Sent from my DROIDX using XDA App

Look. The real issues are simple, the display is quite large and pulls more backlight than it needs. Not only that, but the CPU pulls more power than it needs too. I turned off automatic backlight and set it to the lowest setting. I rooted my phone and use setCPU in order to scale back the processor when it's not needed.
Also, web browsing on a 3G network is much more energy consuming. It's just a fact.
As for the apps, they activate because you have widgets on your home screen. If you want to reduce the running programs, replace unneeded widgets with shortcuts. The less programs running, the less power needed for RAM and CPU function.
What do I get in return for all of my modifications? I can use my phone for about 2 days without having to charge.

I can easily go 48 hours on my extended battery with the right settings... YEs this is with 3G on all of the time.
SetCPU is underclocking or "ON DEMAND", I have deleted most apps that come with the phone that one would never use, backlight is on low usually...
If you are sure that you have all of these settings set and still aren't seeing improvement, go to verizon and have them replace your batt.....

I can go 48 hours on the extended battery and I'm not using SetCPU and I typically leave the screen on auto brightness (though I guess I occasionally turn it down).
Yesterday's usage:
Unplugged the phone around 7:30am. Read emails for about 20 minutes in the morning, checked the weather. Listened to some music on my bluetooth headphones on the way to work, maybe 30 minutes. Started up Appbrain on the phone and downloaded/installed the apps over 3G. At lunch, I listened to more music on the way home, browsed the internet for maybe another 30 minutes while I ate, and listened to music on the way back (all bluetooth).
Showed a few coworkers some of my apps, so another 20 minutes or so with the screen on. Occasional email/text throughout the rest of the day.
At home, I sporadically pick up the phone and browse the internet/read emails/send texts. Easily a solid hour+ of browsing. Played a couple games and downloaded a couple more apps.
When I went to bed and plugged the phone in, around 11pm, my battery was at 50%.
More information about my phone:
- The only radio I toggle on and off is Wifi. Everything else stays on all the time. Wifi goes on when I get home.
- Widgets that update themselves are: a calendar widget, a Google Tasks widget, a sports score widget and a weather widget. All widgets with configurable timers are set to update in 30 minute intervals.
- I have ATK installed but only to let me manually kill processes, it has no auto killing intervals set.
- I am running Launcher Pro Plus. Before I installed LPP, I cleared off my entire Blur desktop - there is nothing on it.
- I am rooted and have removed most of the common bloatware - nothing crazy, just the things like CityID, Amazon apps, Blockbuster, etc.
Hope that information helps someone.

Speaking of extended battery and long life, I just got 34 hours out of mine and it was only down to 30%.
I'm using Juice Defender, toggling data for 2m every 15m AND completely shutting off data when I sleep, 1a-7a.
I don't have a lot of background updating apps either, that seems to be a big thing. After figuring out what works and what doesn't regarding battery life, I can use my phone as I please and not worry about batt life.

This thread is crazy my battery last all day and im on the internet atleast 4 hours a day and receive and make multiple phone calls, and text and stuff [email protected] 12.5 hours with 60% of battery left. I did condition the battery when i first got the phone i let it fully discharge 5 times
Sent from my DROIDX using XDA App

Wow 34!
Sent from my DROIDX using XDA App

he said "****"....lol....

Bought the 1750mah extended battery. First 6 days the battery didn't last that long but the instructions did say do 8 full charges which last about 7-8 hours. I did that and over the weekend I saw awesome battery life.
Unplugged at 8am. At 10 pm I was at 40% life. That was with some light web browsing, book reading.
One thing that makes a HUGE difference. Are you in a constant 3g area? If your phone drops to 2g/1g and it can't find a signal, it will burn through your battery like crazy.
My work building is a verizon void and I get virtually no signal. I get in at 7am. By the time I leave at 4 pm, I'm down to 15% battery. I do not use a task killer. I keep my screens to a minimum. The only thing that updates are facebook posts and beautiful widget which updates every 3 hours. I use the smart battery profile.

Don't you a task killer they kill your battery faster. This is not a windows phone, its based off of linix. applications don't stay running in the background, they hibernate so there not using a lot of resources. when you kill them there just going to restart all at the same time, which slows your phone down, and kills your battery. I was getting about 11 hours on one charge using a task killer, now using it more im getting at-least 14-15 hours. plus if you have your task killer set to high it will randomly reboot your phone, even when your using it....

I dropped my task killer and my battery life is now better. I've had my X off the charger for 6 hours and only recently got to 80%.

My battery life is amazing. I left for work around 6 am yesterday with 100%. Through out the day I talk for about 2 hours, used the internet for about 3 hours straight, listed to music for 1 hour, pandora for 1 hour, and navigation for almost an hour. My battery was at 20% at 11 pm.
Sent from my DROIDX using XDA App

I have noticed a huge improvement in battery after installing leaked froyo. No task killer here but I do have watchdog installed. Haven't had it activate yet though. No widgets on blur screens and running launcherpro. Love this phone with froyo. Would have returned it otherwise.
Sent from my DROIDX using XDA App

I get 38 hrs out of my oem and 48 hrs out of my extended battery. I do have Tranquilty rom on the phone with no blur at all.I keep my sync off and just manually sync for my emails and i have no widgets besides the wheather genie set to refresh every 6 hrs.Im on the cell alot too.So i am very pleased with my battery life .

Awesom Battery life X10. Post yours too!

For Battery improvements I did the following. Please point out if there are any improvements left undone by me.
1.Display set to 4% brightness using Battery booster app.
2.Screen time out 15 sec/30 sec depending on activity.
3.All auto-sync disables (i dont need them currently)
4.Network mode set to GSM only (disabled edge using wifi)
5.killing unused tasks couple of times.
cell standby(GSM) -33% - 1day 9 hr 10 min
display - 29% - 3 hr 40m
phone idle - 25% - 1 day 5 h 26m
wi-fi - 7% - 2h 6m
android system - 3%
voice calls -0.xx % - 4min
total up time 33 hours 10 mins during this session + previous day uptime 5 hours = Total 38 Hours up time
with 22% battery left
(did normal usage like websurfing few pages on wifi, installed 5-8 apps from the market, few mins of gaming , few mins of youtube , some 150 text messages, few Video playbacks for 10 min )
I'm really enjoying this awesom device from SE.
Previously been a victim of Nokia's cheap strategies and products , a couple of times but now i feel like i'm back to heaven with this device. Thank God!

3 days 23 hours to date best, without all the jiggery pokery

any custom roms out there that give a massive boost to battery and performance?

I suppose long standby battery life is pretty cool but it is a smartphone and personally, very impressed with thy battery life on my x10 with what I consider heavy usage;
Autosync on all the time with my Google account so I never lose my contacts and calendar ever again
3g also always on but when I get home from work until next morning WiFi on, that's about 12hrs
Auto brightness on, using tasker for automated 100% brightness on videos and games
K9mail for push email - receive and read about 10 to 15 of them a day
1 to 2 hours of web surfing
Half an hour of music
Above usage lasts me about 16~20hrs and about 15~20% battery life left, how's that?
x10 a+root+jit

I consider myself a pretty heavy user, not sure how long my battery would last as it is charged overnight.
It comes off charge at 7am and will last until 9pm with usually around 25% remaining.
Tbh I don't put much effort into conserving battery since 2.1, it is already fine. The only change I make is nothing updates automatically, I do it when I need it done.
Sent from my X10i using XDA App

6. uninstall moxior using titanuim backup.
7.disable time scape.
8.don't use Live Wallpaper (Use regular wallpaper).
9. use real player or vplayer instead of media scape.
then you can go up to 2 days with normal use.
and with (Games - GPS - wifi - media) ... around 14 hours.
the X10 has awesome battry but the poor programmed apps and high graphical use apps kills it.

If you guys are so worried about battery life why did you get a smartphone
If you have to turn off all its features just to get it to last longer I don't see the point of owning a smartphone... just saying
As long as it lasts me through a day with everything running so that I can charge it when I get back home I'm fine... and it does that

Even using live wall papers I receive a solid ass two days with WiFi and GPS/location services fully enabled (I have a 6 gig data plan and try killing it as much as possible lol). I use it pretty heavily too. A few hours of straight internet radio or on board music, watch some videos over VLC, lots of browsing and tons of texting throughout the day.
I do kill tasks if I've run a ****load of programs and have a few suspect ones that may drain the battery before I put my phone away for a few hours. But lately I've not killed tasks and it's almost exactly the same to my surprise. Last charge might have even been longer despite not killing tasks too!
I use Titanium to uninstall all the useless crap and have JIT enabled.

4days 15hours 48seconds
Cell Standby 49%
Phone Idle 32%
Voice Calls 9%
Display 7%
Android System 2%
20% battery left

hemo1001 said:
6. uninstall moxior using titanuim backup.
Click to expand...
Click to collapse
Why should anyone uninstall Moxier? In my tests I've seen that if I don't configure it, it will not impact on battery life.
However, I'm running with GMail and Moxier both in push mode on 3G network and I get about 36 hours.

I've uninstalled moxier, not to save battery but to save memory, and improve boot time..
Sent from my X10i using XDA App

i don't use it and it keeps auto-lunch it self so that's annoying .
anyway i delete the unused apps to increase space and speed in general.
i use smart phones for movies , games and GPS . most of the time so the battry life is too much important to me. i didn't active the 3G internet in my smartphone it costs alot.

akila87 said:
4days 15hours 48seconds
Cell Standby 49%
Phone Idle 32%
Voice Calls 9%
Display 7%
Android System 2%
20% battery left
Click to expand...
Click to collapse
What ROM are you using ? ... What are the other settings and apps you have been using to get that statistics ? ... anyone tried underclocking the CPU ?? ...

i don't recomend downclocking the CPU.
it makes the x10 too slow and laggy.

after 15 Hours.. down to 56%.. would get 2 full days out of this.. (I usually put it into flight mode at bed time). Wifi set to always on..

n4naveen said:
What ROM are you using ? ... What are the other settings and apps you have been using to get that statistics ? ... anyone tried underclocking the CPU ?? ...
Click to expand...
Click to collapse
SE stock ROM with launcher pro + JIT removed Moxier & KBs

akila87 said:
SE stock ROM with launcher pro + JIT removed Moxier & KBs
Click to expand...
Click to collapse
wow launcher pro app is really nice ! ... thank u buddy

Being able to undervolt the processor would be awesome. It's a common practice in the laptop world, and a must do if you plan on using the laptop a lot relying on the battery only.

My solution to all this! Just charge it every night, so you don't have to worry about having juice the next day when you are out and about...

[HELP] Battery Drain, 35% drop in 10 hours

This has been plaguing my phone for a few months i can't even get 24 hours without it dieing. I can't figure out what the problem is and i have tried everything except a full wipe which i want to avoid.
Before i would get about 2 days with normal usage (few calls, browsing the net, msn, music and little bit of gaming)
Now when i unplug it at 7AM it is almost dead by 3PM (15%) but nothing has changed so i can figure out where the drain is coming from. I'm using Doc 9.6.6 (was on 9.1.4 and did a NO WIPE of 9.6.6 yesterday to see if i could get better battery) and SpeedMod K13C 500.
Everything that uses data is disabled or set to manual. Wifi is disabled, GPS is disabled, Bluetooth disabled. Google/Facebook sync is disabled. No Live Wallpaper, Email is set to NEVER, Fancy Widgets is set to NEVER. Reset the battery state in recovery numerous times, wiped cache etc.
Last night phone was at 60% when i woke up the phone was at 35% and that's only about 10 hours and after a FRESH shutdown and reboot. So nothing out of the ordinary like a game was running.
Whats Running after a fresh boot is in the pictures below, ending things like Tango and Galley, Facebook make no difference.
What is causing this massive idle drain?
If i need to do a full wipe is there a way to save my games saves? don't care for anything else just dont wanna start angry birds over again for a 3rd time.

You got 2 days before??
I've always only ever gotten max 12-14 hours out of my battery. Wifi off, bluetooth off, gps off, 3g on, background data & auto-sync on for: 2 gmail accounts + facebook (no auto refresh) + twitter (updates ever 30 mins) + whatsapp. BeejiveIM, GoSMS, Lookout, weatherbug elite widget (updates every 12 hours), agenda widget, NoLED on, and go launcher ex. Running stock rom JL2. Drains about 15% overnight (7 hours).
Not sure how you got 2 days before, but sounds about right to me that you get less than 24 hours from your battery.

Myself and many others get 2 days with light-moderate usage. I'm on 2 days 9 hrs and 10% left right now with 2 hrs 15 min screen time.
If you can't figure it out you might just have to bite the bullet and wipe it to see if that works.

Did you try this:
DocRambone said:
In this post i will try to give some advice and troubleshooting about battery issues. It will be linked from 1 post.
Any contributions is very welcome.
- How to reset battery calibration:
Discharge the phone fully
Charge it to full
Enter recovery, advanced CWM features : wipe battery stats
Click to expand...
Click to collapse

haloimplant said:
Myself and many others get 2 days with light-moderate usage. I'm on 2 days 9 hrs and 10% left right now with 2 hrs 15 min screen time.
If you can't figure it out you might just have to bite the bullet and wipe it to see if that works.
Click to expand...
Click to collapse
can you post your usage habits and what you have running the background etc?
I've only ever been able to get 14 hours out of my battery with light usage (mainly texting every 10-15 mins or so). Even after a wipe

DaanJordaan said:
Did you try this:
Click to expand...
Click to collapse
yes i did try that, its annoying the hell outta me that it used to last 2 days but now its like this and thats with everything off.
I used to have a live wallpaper on all the time and yes that did drain the battery allot but i would still have about 30% after a full day of usage from a full change.
Now it dose not matter what i change if i live wallpaper or not its still dies about 3PM
any way to save my games says if i have to do a wipe?

That's awesome! I get 8% an hour drain on idle with 2 gmail accounts, and a few apps synching... with usage (bluetooth music, browsing, texting...) I have about 15% an hour drain.
Wiping, battery stats wipe, new roms, kernels, and modems don't fix anything... I guess we just have to accept that some units go through more battery than others!

If you're using Google Latitude service (configured via Maps), try signing out of it and see what it does for you. I've been suffering from excessive battery drain as well and after a lot of experimenting I've found out that using Latitude on Froyo ROMs (any Froyo) leads to phone not entering sleep mode properly for some reason and therefore draining battery a lot.
Nexus S users are experiencing this as well and I've even had confirmations from Desire users experiencing this, so this might be some bigger issue not related to SGS.

Case_ said:
If you're using Google Latitude service (configured via Maps), try signing out of it and see what it does for you. I've been suffering from excessive battery drain as well and after a lot of experimenting I've found out that using Latitude on Froyo ROMs (any Froyo) leads to phone not entering sleep mode properly for some reason and therefore draining battery a lot.
Nexus S users are experiencing this as well and I've even had confirmations from Desire users experiencing this, so this might be some bigger issue not related to SGS.
Click to expand...
Click to collapse
:O oh man I hope this is the case, I will sign out of Google Latitude, and report with the results in a few hours

quaff said:
can you post your usage habits and what you have running the background etc?
I've only ever been able to get 14 hours out of my battery with light usage (mainly texting every 10-15 mins or so). Even after a wipe
Click to expand...
Click to collapse
There's all the standard stuff running, gmail, swype, social hub, task manager, some other widgets, etc... There's no talk time on this run, it can burn it up pretty quick probably 20+% per hour.

haloimplant said:
There's all the standard stuff running, gmail, swype, social hub, task manager, some other widgets, etc... There's no talk time on this run, it can burn it up pretty quick probably 20+% per hour.
Click to expand...
Click to collapse
Wow. I'm insanely envious of your 3days! and also, your display only sucks up 53%. Something is odd with my phone, my display usually takes about 98%.

haloimplant said:
There's all the standard stuff running, gmail, swype, social hub, task manager, some other widgets, etc... There's no talk time on this run, it can burn it up pretty quick probably 20+% per hour.
Click to expand...
Click to collapse
Hm, do you have Google Latitude signed in on Google Maps?

No, no Latitude.
The display will suck up 90+% if you're using the phone alot since it burns battery much faster than idle or networks.

haloimplant said:
No, no Latitude.
The display will suck up 90+% if you're using the phone alot since it burns battery much faster than idle or networks.
Click to expand...
Click to collapse
Interesting, I'm going to give it a go without Latitude on after I reflash stock JL2. My "Time on" for Display is usually something like 40mins or so when I check it at 98%

Idle drain seems to be what are most worried about.
Ok first fix permissions from cwmedia recovery in speedmod.
Then wipe cache and dalvik partitions, don't worry your phone will rebuild them.
Next I would try something if you want avoid a factory wipe.
Disable swype and clear app data then re-enable. Swype seems to have non wipe issues thru kies.
Now use OS monitor app to find apps which lurk in the background and then check their permissions, ones that can keep the phone awake are the culprits. Wipe their data or uninstall.
Facebook app sometimes doesn't shut down properly so watch that.
Also after a session I like to use clear mem level2 to stop Facebook or another app eating battery.
Finally what modem are you using? Jpy modem sucks for me at least. The latest jve from the gingerbread leaked rom is superb!
Hope this helps and good luck!
Stock JPY, Insanity SpeedMod OC-1200Mhz/UV, ext4, JVE gingerbread Modem,

Something I did a while ago seemed to help.
I ran down the battery till it switched off. Phone wouldn't power on. I plugged in the charger and powered on again. To my surprise the battery showed about 25%. Unplugged the charger then used it again till shutdown. Took about half an hour to do so, even though it was only connected to charger for a minute or so. Did that about 5 or more times till finally booting up with charger connected showed 0%.
Generally it not a good idea to boot with the charger connected as it stuffs up the battery stats or something, but I think in some cases it can help. Charged it to full and had no problems since.
Obviously this wont help if something in the background is killing the battery.
Sent from my Galaxy S using XDA App

May be you have a task killer running in background and killing tasks that you shouldnt kill, by example any widget you have in your screen, it will cause that it will be reestarting and consuming CPU each certain time.
Sent from my GT-I9000 using Tapatalk

Remove TANGO !!! This soft was draining more than 25% overnight on my SGS (even if there's no service running and if it's not in task manager), After removing it, now my battery decreases 3-4% in 8h !

Funny Tango was the one thing that jumped out to me from the process list, but I don't have any experience with it myself. Shutting that off for a while is probably worth a shot.

This is my batterystats. "Taleanrop" is phonecalls or whatever the english term is.

Tab Pro 8.4 Battery Life

How much battery life are you guys getting on your Tab Pro 8.4? I bought mine couple of days back and I felt it's disappointing.

metaldood said:
How much battery life are you guys getting on your Tab Pro 8.4? I bought mine couple of days back and I felt it's disappointing.
Click to expand...
Click to collapse
Mine has been fine. But, i use it to read and browse the web. I rarely make it down to 50% each day.
Cheers,
Rich

rholm said:
Mine has been fine. But, i use it to read and browse the web. I rarely make it down to 50% each day.
Cheers,
Rich
Click to expand...
Click to collapse
What's your on-screen time in battery stats? Or maybe post a screenshot of your battery usage.

metaldood said:
What's your on-screen time in battery stats? Or maybe post a screenshot of your battery usage.
Click to expand...
Click to collapse
It shows 2 hrs 10 minutes. I have 67% battery left.
Cheers,
Rich

What bugged me was the disappointing battery life when the screen was turned off (not completely powered off of course). Even in airplane mode it would die in a day or two just sitting around. Battery stats showed Android System and OS were killing the battery. I never figured out if there was a setting or something to fix it.
Instead I loaded Cyanogenmod 11 on it a week ago and now it uses only 3% of the battery a day when I'm not using it. I don't miss any of the Samsung extras.

sbleacher said:
What bugged me was the disappointing battery life when the screen was turned off (not completely powered off of course). Even in airplane mode it would die in a day or two just sitting around. Battery stats showed Android System and OS were killing the battery. I never figured out if there was a setting or something to fix it.
Instead I loaded Cyanogenmod 11 on it a week ago and now it uses only 3% of the battery a day when I'm not using it. I don't miss any of the Samsung extras.
Click to expand...
Click to collapse
Something must be keeping it awake. My tab has excellent standby battery life.
Doesnt lose more than 5% in a day. I do have the setting to turn wifi off when in sleep mode though (unless plugged in)
Battery life on the whole varies. Video watching through the stock video player drops about 10% an hour. Surfing would depend on your browsing habits. Gaming drains close to 20% an hour. Pretty standard. That along with the excellent stand by time means I get about 2 days of use on a charge.

Every day at work telephony, internet, email, IMO 24hours, 24hours Bluethooth Gear 2 connect. Dinner consists of my tablet battery 55%. For me life is great. My tablet root and frozen Samsung Apps (Bloatware) ... XDA .... Try the Nova launcher from the Play Store to Improve speed. Set it as your default launcher then Disable / Turn Off;
Flipboard, MagazineWidget, S Voice, Samsung Apps, Samsung Apps Widget, SapaMonitor, Screen Saver, World Clock, and (Hancom, Office for Android Share, Hcell, Hshow, Hword, Updater, Viewer Launcher, and Widget) if you do not plan on using it.
We will be adding Quadrant test 24,000 points on the original ROM.
Play google baterry doctor.

Battery life is good its an app thats draining the battery.
Sent from my SM-T520 using Tapatalk

208
rkial said:
Something must be keeping it awake. My tab has excellent standby battery life.
Doesnt lose more than 5% in a day. I do have the setting to turn wifi off when in sleep mode though (unless plugged in)
Click to expand...
Click to collapse
Yes it was using as much battery as watching a movie with the screen on. Something was terribly wrong with it. I think this behavior started after a software update I got from Samsung.
I turned everything off including Wifi and it was still eating the battery while sitting there with the screen off. I have never seen that with any Android device I've ever owned.
But I'm happy with Cyanogenmod. Battery life is outstanding now.

My battery life was mediocre, and then I put cyanogenmod on, and it went to dreadful. With the tablet at 100% and OFF, untouched, it would be 20% down in 10 hours. In contrast, my iPad loses maybe 3% in that time, doing the same thing - tracking email.
I ran a wakelock tracker and noticed that Exchange Services has it awake about half the time. The total time. Like in 10 hours Exchange had it awake (with screen off) more than five hours. Effen ay. Something is seriously screwed up with how Cyanogenmod's Exchange talks to the two Exchange services I use. Switching from Push to "5 minutes" has helped significantly; Exchange is still the worst culprit, but now only by a factor of four rather than a few hundred.
Ideally what I'd like is the new Exchange apks modified to prevent admin and fixed to be less wakelock intensive.

rkial said:
Something must be keeping it awake. My tab has excellent standby battery life.
Doesnt lose more than 5% in a day. I do have the setting to turn wifi off when in sleep mode though (unless plugged in)
Battery life on the whole varies. Video watching through the stock video player drops about 10% an hour. Surfing would depend on your browsing habits. Gaming drains close to 20% an hour. Pretty standard. That along with the excellent stand by time means I get about 2 days of use on a charge.
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Click to collapse
What is your on-screen time during the 2 days?

Wotta said:
I ran a wakelock tracker and noticed that Exchange Services has it awake about half the time. The total time. Like in 10 hours Exchange had it awake (with screen off) more than five hours. Effen ay. Something is seriously screwed up with how Cyanogenmod's Exchange talks to the two Exchange services I use. Switching from Push to "5 minutes" has helped significantly; Exchange is still the worst culprit, but now only by a factor of four rather than a few hundred.
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Click to collapse
Cyanogenmod has their own version of Exchange?
Our Exchange servers at work are ridiculously slow and unreliable. They can take two minutes to return your mail which is a major drain on your battery if it's set to check it every five minutes and you get a lot of mail. Sometimes they'll just stop responding and leave you hanging. The IT people just tell you to keep trying and you'll get your mail eventually.

metaldood said:
What is your on-screen time during the 2 days?
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Dunno.. 7-8 hrs I guess. Screen on time really doesnt mean much without any context.
I can get 12hrs+ watching videos on 20% brightness. I can kill it in 4 hrs playing games at 100%.
Like I said, the standby is excellent. Drains less than 10% in 2 days. So for me, I have about 90% to use over 2 days.. and from my experience,
video drains less than 10%/hr
gaming ~20%
reading books drains less than video.
General surfing, mails, social networking uses between 10-15% depending on how you are using it.
My brightness is usually around 40%. Goes up rarely when I'm using it bright conditions. Goes lower when I'm reading late at night
Should give you an indication of what you can expect from the battery depending on your usage..

Mine drains about 10% per hour while constantly using the device for light tasks, such as reading, web surfing, and watching some YT videos here and there. That increases to about 15%/hour when I watch movies. So after watching a 2 hour movie, I expect to see about 70-75% of battery left. Now if I'm listening to music for an hour at the gym with the screen turned off, it only drains about 3%.
At first, I thought that was pretty mediocre and felt disappointed. But I've taken my tablet with me on many trips and never had it die (usually just close to 20%). I rarely ever use my external battery pack. I know this will vary depending on how long the trip is and how much you're using it, but I'm just saying that it meets my needs despite having a lower battery life compared to some other tablets. I do all I can to extend it, but I don't have to constantly watch it.

Last night I charged the tab 100% and with Wifi off (sync for 1 min every hour. )
Today the battery is at 71% - On battery 13hours - 44 mins
27% Android OS
24% Google services
13% Android System
8% Onscreen time - 20 mins
Should I flash CM to fix this?

metaldood said:
Last night I charged the tab 100% and with Wifi off (sync for 1 min every hour. )
Today the battery is at 71% - On battery 13hours - 44 mins
27% Android OS
24% Google services
13% Android System
8% Onscreen time - 20 mins
Should I flash CM to fix this?
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Click to collapse
CM won't fix that. Install Better Battery Stats or Wakelock Detector to nail down the precise problem. If you're using them, it could be Exchange Services or Google Drive (yeah, that turkey wakelocked me to oblivion!), at which point you at least know what to attack.
You can find BB on XDA here and WakeLock Detector on XDA here, both are also in the Play Store.

Wotta said:
CM won't fix that. Install Better Battery Stats or Wakelock Detector to nail down the precise problem. If you're using them, it could be Exchange Services or Google Drive (yeah, that turkey wakelocked me to oblivion!), at which point you at least know what to attack.
You can find BB on XDA here and WakeLock Detector on XDA here, both are also in the Play Store.
Click to expand...
Click to collapse
Google search with 23 mins of wake time and Gmail with 6 mins.
Currently Deep sleep is 14 hr 26 mins. Total time is 17h 5m. Awake is 2h 39m. Screen on time - 27mins.

I added the google now widget a couple of weeks back and that caused some wakelocks and overnight battery drain. Removed it and didn't have the problem.
The battery life is pretty good for me. Was out a lot, so had wifi off for large parts.. watched videos (from device), read some books, played some Asphalt (not much.. around 30 mins) and some browsing/mails..
Got 11 hrs screen on over 2.5 days and still have 15% left.
Yeah was indoors so the brightness was never over a third (~30%) and reading books really doesnt drain much battery(especially if its at night and you turn the brightness further down)..
I'm not saying people will get 10+hrs screen on with their device and usage constantly.. 8hrs would be realistic.. but the point is, the battery is a lot better than I had originally expected.

Wotta said:
I ran a wakelock tracker and noticed that Exchange Services has it awake about half the time.
Click to expand...
Click to collapse
I have this same problem - except my GTP is 100% stock, unrooted. I can go into Settings/Battery to see that Exchange Services is chewing my battery. It will die in less than 24 hours, even if I don't use it - as long as it has a WiFi connection. I think if I turn off WiFi, it will stop attempting to sync and the battery will last "normally". I don't know for sure, though, as I haven't tried. I'm not interested in a tablet with no network connection or even without my email.
I'm going to cut a VERY long story short (at least, here) and say that I have spent several hours logging the ActiveSync traffic between my tab and my server, poring over the logs, and I have identified the problem. It's one particular item that is failing to sync, which causes the tablet to retry the sync every 1 second. The sync failure causes the server to log an internal server exception every time - despite the ActiveSync requests from the tablet being correct. I also found a Microsoft KB article that appears to address this exact problem, and MS has a hotfix available for it.
I have talked to Tech Support at my hosted Exchange provider and they have confirmed with their operations staff that my server does not have the MS patch that is referenced in the KB article installed. Unfortunately, they are giving me a bit of the runaround on installing it. I only have one mailbox hosted with them, so I have no pull. They sound like Verizon. "We have to thoroughly test this update in our lab before we can install it on your server." And "nobody else has reported this problem and we can't put too much time into a problem that only one user is experiencing."
So, I am now just waiting for them to install it on my Exchange server and see if it really does fix the problem for me. If it does, I will be posting about it on XDA and the AC forums, as a Google search showed me that a lot of people, with a lot of different Android devices, have this same problem and nobody seems to know what's really going on or how to fix it. I will try to remember to post back in the GTP General subforum specifically, too, so stay tuned.

My battery life seems to be getting better as the battery gets some more charges on it.
Sounds basic / silly, but i simply put mine in battery saver mode and that made a big difference with little effect on performance