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Can we start collecting some stats. Can people post what battery percentage they lose every 30 minutes or an hour of just browing websites on wifi and/or 3G and specify which one, and also average screen brightness during this time. I know this tablet using superAmoled will have less battery life than if you watched movies, but there should be some standard of web browsing.
I use about 20% battery life, just on wifi, brighness at max of 30%, battery stats showing no abnormal activity in the background.
[edit] on ICS 2nd stage. using Chrome browser.
About 13% per hour here. This is a P6800, using wifi only (radio turned off), in an area with low wifi signal (2 bars). Minimum brightness, CM10, default JellyBean browser.
(EDIT: 20% in 1.5h, so 13-14% per hour)
Steve_max said:
About 13% per hour here. This is a P6800, using wifi only (radio turned off), in an area with low wifi signal (2 bars). Minimum brightness, CM10, default JellyBean browser.
(EDIT: 20% in 1.5h, so 13-14% per hour)
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I think this is an accurate SGT 7.7 battery test http://blog.gsmarena.com/samsung-galaxy-tab-7-7-battery-test-results-are-ready-does-well/
kaimyns said:
I think this is an accurate SGT 7.7 battery test http://blog.gsmarena.com/samsung-galaxy-tab-7-7-battery-test-results-are-ready-does-well/
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i did read that yesterday while scouring the web for web-browsing results for the SGT 7.7, which is why I was hoping we could all share our experiences, since I know myself, and it sounds like others, are not getting 7 hours of straight web browsing. Me I am getting 5. Starting to think it is a hardware defect and to contact Samsung, but wanting some more data also.
That's a bit worse than what I'm getting on CM10. Quite impressive, I'd think Samsung would tune their ROM better than what the community could do in a couple of months.
idiotekniQues said:
i did read that yesterday while scouring the web for web-browsing results for the SGT 7.7, which is why I was hoping we could all share our experiences, since I know myself, and it sounds like others, are not getting 7 hours of straight web browsing. Me I am getting 5. Starting to think it is a hardware defect and to contact Samsung, but wanting some more data also.
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Screen shot you battery usage and post. Maybe there is an app we can see causing your drain. If your screen isn't drawing 70%+ there may be an app running out of hand.
Sent from my GT-P6800 using xda app-developers app
With wifi and auto brightness, max is 5 hours screen up time. How they get 7 hours? @@
well I switch from chrome to opera and battery life is much better in initial usage. 16 percent battery in an hour in 15 minutes. auto brightness in a dim indoor setting. tablet temp is also not going over 100 where with chrome that was normal. Will test for a few days.
end of one full battery session only using opera mobile to browse.
with 37% left I had the screen on for 4.25 hours, auto brightness indoors, most of which was browsing. while browsing i also downloaded 2 HD movies from google play on wifi as well as updated about 10 apps and downloaded a couple more. after watching 1:35 minutes of an HD movie at about 80% brightness, the battery only went down to 26% from the 37% which is what i am used to for this tablet for video, it's amazing due to the lack of pure whites and a lot of dark colors including the black bars. browsed the web another 20 minutes, only lost a few more percent. put it on the charger at 22% and will pick it up again tomorrow.
also regardless of what browser i use, my tablet is a standby machine. with the screen off i may lose a percent every few hours.
during the screen on time my temp went over 100 degrees only while downloading movies and browsing. and it only went to 102. just browsing with chrome the tablet would get to 107.
will test again tomorrow and see if the trend continues or if this was an anomaly. if i get three days in a row with this kind of battery life, i am uninstalling chrome and sticking with opera for now.
This is my stats after almost 5 hours on 3g. Activities includes Web browsing, music streaming etc.
Sent from my GT-P6800 using xda premium
using stock honeycomb 3.2, I also have the ics update but I won't do it
1 hour for 10% how much I will get? do the math ^_^
and now after 4 hours of continuous usage, still 60%
Sent from my GT-P6800 using Tapatalk 2
well it's been some days since i stopped using chrome and tested out numerous other browsers. here are my results.
using chrome my tab would get quite warm and lose close to 20% an hour browsing on 20-50% brightness. the stock browser wasn't much better.
i have tried opera, maxthon, boat and xscope. maxthon is just not good layout wise on a tablet. maxthon tablet is quite nice with an awesome and fast night mode that turns text into white, the background into medium gray and still shows all the pictures in full color - which is amazing for a samoled screen not having to produce all these white backgrounds. however it FC's a lot and you can see that in the comments. keep an eye on this browser as it is being developed.
xscope just doesn't have a nice enough interface for me on a tablet. boat also got my tablet warm.
so opera mobile. my battery life has gone up extensively since i started using this. with heavy heavy browsing i am getting between 7-8 hours battery life. with steady browsing mixed in with other things like using pulse, taptu, play store i am getting 8 hours+.
i monitor my temps and they stay much much cooler, like 7-10 degrees and often more. with chrome or stock i would notice the left side of the tablet getting warm quickly.
i am running the stock ICS stage 2 ROM, rooted. standby time is amazing, i will not lose more than a percent of battery every few hours. i used to keep GPS on and do quite well standby but in better battery stats i noticed MAPS having wakelock time for many minutes while on standby even with settings set so it shouldnt. so i just turn GPS off until i need it. other than that, nothing special.
for those with lower battery life on wifi browsing, try opera for a few days. let us know what your results are.
well it's been a week since I switched browsers. i have to say it's like having a brand new 7.7
chrome is uninstalled. the stock internet is never used. i ended up testing the maxthon tab browser and opera. the last 4 days just exclusively opera mobile.
i don't think the maxthon tab browser is ready for prime time even with an update in the last week. keeping an eye on it.
opera mobile has been the best option, though it has some features i feel need tweaking and others that are better, it is still a nice browser. it also creates far lower temps, lower cpu usage and far better battery life with my tab. 2 hours more per charge at least than chrome or stock.
i hope this helps some people out who are having battery issues in regards to standard internet browsing. if you encounter simliar success, please post.
I don't lose a single percentage in battery when I sleep at night after the ICS update. That's 6-8hrs of sleep. Is that normal? I am happy about it though, but is it normal?
jerverg said:
I don't lose a single percentage in battery when I sleep at night after the ICS update. That's 6-8hrs of sleep. Is that normal? I am happy about it though, but is it normal?
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Yep
Sent from my GT-N7100
sos_sifou said:
Yep
Sent from my GT-N7100
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Nice. I thought my Tab was kind of 'over-sleeping'. Haha. Thanks!
Here's my battery usage... Currently at 9% after a full days use with about 2hrs+ surfing on 3g, 2hrs of satnav and a few texts and calls. Pretty impressive i think. I am using Dolphin browser which for me blows all the rest away. Good on battery, great gestures and fast.
Here's mine. I was listening music for about two hours while browsing
Sent from my GT-P6800 using Tapatalk HD
I got my nexus 7 on saturday as soon as I did I turned it on. There was an update available to android 4.2
Since it was a clean install I have not experienced any of the horrible software bugs I read here. Battery on the other hand is sort of dramatic. I will admit I use it a lot, but, come on! My Nexus S has better battery than this guy performs.
While I was at work, it was charging. I came home, it was 100% charged, so as soon as I ate, and stuff I started playing with it.
I played Sonic THD version, listened to a few songs on YouTube and now I am reading a book, and I notice the battery is down to 41%. This is like, horrible battery, because I used it for Sonic, YT (only in low quality, not HD) and book lasted together like an hour and a half. Tegra may have wasted some battery on Sonic, but 60% drop for less than 2 hours is bad, mmkay?
Is this normal? 4.2 having battery bugs?
Other thing is, again, not sure if 4.2 or...
When my battery is bellow 27% or so, multi touch starts acting up. Not detecting all the touches, detecting 2 instead of 1, flashing between 2 touches... When charging and above 30% it is fantastic, no problems at all. Besides that, loving every bit of this beast!!
Sent from my Nexus 7
I reckon 4.2 may be contributing to those same bugs you felt you had avoided. There's an issue with battery use and charging that is slowly coming out of people. For example, my n7 charged overnight and when I came to unplug it was at 76%. Not a previous behaviour on any 4.1 version.
Sent from my Nexus 7 using xda app-developers app
my battery is dying fairly quickly. i get about two hours of screen on. what would be the best kernel? or something i could do to improve battery? im running stock 4.2.1. with stock kernel. i just use spotify, twitter, facebook and instagram.
Just got the tablet a few days ago. Love the speed. Love the pen. Love the stock UI. Love the tablet. But that battery life..... yikes. I wanted to know how everyone's battery life was. I'm on rooted 4.4.2 and it dies so fast. If I'm not using it, it stays on the same percentage for a few hours but if I'm using it, even for light browsing, the battery percentage just drops. While I'm playing Dead Trigger, it takes like 5 minutes of gaming to drop 10%. I'm on maximum performance so I didn't know if that was normal or not. But thats during gaming on max performance so I can't say I didn't expect that. What I didn't expect however, is how fast it drops even with nongaming use at low battery setting. I was taking notes in class earlier today and it dropped a percentage roughly every 1.5 minutes. Is this normal? What are your battery lives like? Does it get better if I roll back to 4.3 or 4.2.2?
Mateyo64 said:
Just got the tablet a few days ago. Love the speed. Love the pen. Love the stock UI. Love the tablet. But that battery life..... yikes. I wanted to know how everyone's battery life was. I'm on rooted 4.4.2 and it dies so fast. If I'm not using it, it stays on the same percentage for a few hours but if I'm using it, even for light browsing, the battery percentage just drops. While I'm playing Dead Trigger, it takes like 5 minutes of gaming to drop 10%. I'm on maximum performance so I didn't know if that was normal or not. But thats during gaming on max performance so I can't say I didn't expect that. What I didn't expect however, is how fast it drops even with nongaming use at low battery setting. I was taking notes in class earlier today and it dropped a percentage roughly every 1.5 minutes. Is this normal? What are your battery lives like? Does it get better if I roll back to 4.3 or 4.2.2?
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I was the same, i thought the battery life sucked but then i did a complete wipe and flashed stock 4.4.2 and now i love the battery life, using 'balance' mode i get excellent of battery life, imo the best feature of this tablet.
Jedipottsy said:
I was the same, i thought the battery life sucked but then i did a complete wipe and flashed stock 4.4.2 and now i love the battery life, using 'balance' mode i get excellent of battery life, imo the best feature of this tablet.
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Interesting. So rooting it might have something to do with battery draining so fast? I'll have to try to wipe, reflash stock, and test it out. Appreciate the input!
I have not rooted my TN7( 4.4.2 ), I use BSPlayer for videos and music and my battery shows 1% drop after playing MP3s at full volume for 8-10 minutes. That's very impresssive battery life. I use "Balanced" setting from "Settings" app. May be, you are having battery issue because you might have rooted using chinese method and that installs some chinese apps.
MC4 runs without lags on my TN7 with "Balanced" setting and about 3.5 hours of battery life. I will check what happens after changing to "Performance" setting.
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I did not experience any "impressive graphics" when playing Shadowgun THD. What was you experience? (RR3 looks very good, mirroring on the surface of cars, shadows) ...
asratxda said:
I have not rooted my TN7( 4.4.2 ), I use BSPlayer for videos and music and my battery shows 1% drop after playing MP3s at full volume for 8-10 minutes. That's very impresssive battery life. I use "Balanced" setting from "Settings" app. May be, you are having battery issue because you might have rooted using chinese method and that installs some chinese apps.
MC4 runs without lags on my TN7 with "Balanced" setting and about 3.5 hours of battery life. I will check what happens after changing to "Performance" setting.
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I did not experience any "impressive graphics" when playing Shadowgun THD. What was you experience? (RR3 looks very good, mirroring on the surface of cars, shadows) ...
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I've rerooted it from scratch and the battery lasts much longer. The only chinese app I had was some input keyboard one that I immediately deleted with clean master so I wasn't worried about it. I unfortunately have not tried shadowgun THD so I can't say what my experience is, but man. RR3 does look AMAZING.
Mines totally stock bar the google home laucher
I think it is pretty awful
1% every 1.5 minutes just surfing and YouTube
When running root w/ stock 4.4.2-2.1 and power saving mode w/ auto backlight, I get around 6-8 hours of use - I don't game though.
Just picked up the evga version, did all the updates to 4.4.2, battery is just draining like crazy, unit is quite warm to the touch constantly. Topped off out of the box, did the updates, was at 92%. Stepped out with friends and took it with me. It was sleeping the majority of the time, took a couple of test pictures to see AOHDR in effect. No wifi connection. 6pm to 9pm when i got home, battery was at 8% installed a couple of apps, in about 15 minutes was at 4% with the critical warning. Went ahead and charged it up all night. Been off the charger about 40 minutes, im at 75%. This can't be right, nothing near what you guys have reported. battery indicator is that screen on is the biggest drain. Im rooted, stock recovery, SD write fix applied. If i have to do a wipe, ill do it, but i've only installed bgee, sketchbook, cal, coursera, and a bunch of updates. No chance of 10 hours web like the reviews state, no chance of 10 hours of even idle running! Im using the balanced power mode, prism on, auto dimming.
---------- Post added at 01:10 PM ---------- Previous post was at 12:47 PM ----------
wow, 65% 1h 15m on battery
google plus has now taken the lead, 41% total use. killed it for now,w e'll see
Sess said:
Just picked up the evga version, did all the updates to 4.4.2, battery is just draining like crazy, unit is quite warm to the touch constantly. Topped off out of the box, did the updates, was at 92%. Stepped out with friends and took it with me. It was sleeping the majority of the time, took a couple of test pictures to see AOHDR in effect. No wifi connection. 6pm to 9pm when i got home, battery was at 8% installed a couple of apps, in about 15 minutes was at 4% with the critical warning. Went ahead and charged it up all night. Been off the charger about 40 minutes, im at 75%. This can't be right, nothing near what you guys have reported. battery indicator is that screen on is the biggest drain. Im rooted, stock recovery, SD write fix applied. If i have to do a wipe, ill do it, but i've only installed bgee, sketchbook, cal, coursera, and a bunch of updates. No chance of 10 hours web like the reviews state, no chance of 10 hours of even idle running! Im using the balanced power mode, prism on, auto dimming.
---------- Post added at 01:10 PM ---------- Previous post was at 12:47 PM ----------
wow, 65% 1h 15m on battery
google plus has now taken the lead, 41% total use. killed it for now,w e'll see
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Got Evga, after the 4.4.2 the battery started to drain at aprox. 1% per minute even with the screen off, Seems to be a bug of 4.4.2, maybe the latest update shall fix that. Anyway, personally I won't know it for a long time since I bricked mine while trying to go back to 4.3 and escape from battery drain Also, if anyone could do me a favour and backup the system from cwm, I'd be really happy)
Try deleting the "batterystats.bin" file and then switch off, charge, then power on after complete charging.
I think those who are reporting battery problem, all have rooted, thank god I have not rooted till now!! I can play 720p movies from my shared windows folders over wifi with fair signal strength for about 9 hrs. Still while playing Asphalt 8, battery lasts only for 2.5 hours. I have all the default settings, not changed anything. ( Xolo Play Tegra Note )
asratxda said:
Try deleting the "batterystats.bin" file and then switch off, charge, then power on after complete charging.
I think those who are reporting battery problem, all have rooted, thank god I have not rooted till now!! I can play 720p movies from my shared windows folders over wifi with fair signal strength for about 9 hrs. Still while playing Asphalt 8, battery lasts only for 2.5 hours. I have all the default settings, not changed anything. ( Xolo Play Tegra Note )
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I'm not rooted
Where is this file ?
Battery life is great for me! I took out of the box, turned a few things off, but it's wonderful. I use Nova Prime launcher. Not sure if that's helping.
hey,
Im a new tablet user.I own a nexus 7 and im so disappointed with its battery life that i cant take it anymore so i have to ask.its just been a couple of days since i bought it. the maximum on screen time i get is 5-6hrs.i scrolled over battery life posts of others on this forum and i was shocked to see many of them actually have good battery life which made me worry even more.Maybe its the battery's fault or something.it had some heating issues then i did a factory reset now its fine but the battery still sucks.i have disabled all google apps,location,maps,books..etc all that i dont need but still its no good.please suggest something.shoud i ask for replacement or is it something like the model whose price go down are geared up with cheaper hardware and stuff cos i bought this one recently and this probably came out last year.
The third screenshot was taken after watching a full movie on earphones with full battery.it went down 32 % of the battery.wifi was off.
Please suggest
It's you usage. That's all. Games take a huge toll on battery life on any device.
You have no issue.
Try one full charge with zero gaming. See how you do then. ?
That's about average, as LJ says games really suck battery the most. My typical usage consists of web browsing, XDA forum on Tapatalk browsing, pocket, twitter, fb, etc nothing too heavy really. I get about 4-5 hrs screen on over about 2-3 days. Im usually only on my tablet in the evening and so it sleeps the rest of the time with WiFi and autosync off.
You can always experiment with other ROMs/kernels to see if you can tweak things further.
Also, 5.0 is on the way, you could always flash the factory images for a full fresh lollipop experience. [emoji2]