all of a sudden my nexus 7 battery time is resetting everytime i power on?
any ideas
Mine sometimes does it and sometimes not. I can't figure out why.
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Same with mine, and my screen on time is wrong.
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However I remember some 3rd party battery apps show correct info despite the info under settings.
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I think this is because android OS is designed to work as a mobile operating system (not turning it off unless there is no battery) so that's y after using ur tabler when u turn it off it resets the time or add a significant difference.
I don't turn off my tablet and most of users don't so that's y ur only having this problem.
Besides tangby time on nexus 7 is amazing 1%-2% drop in 12 hours.
xateeq said:
I think this is because android OS is designed to work as a mobile operating system (not turning it off unless there is no battery) so that's y after using ur tabler when u turn it off it resets the time or add a significant difference.
I don't turn off my tablet and most of users don't so that's y ur only having this problem.
Besides tangby time on nexus 7 is amazing 1%-2% drop in 12 hours.
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The only time that Android should be resetting battery stats is when you unplug the device after an approximately full charge
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Did anyone get to the bottom of this?
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Related
Hello-
Ever since I updated to 4.2 and especially 4.2.1, battery life has not been the same. Today I went from 100% last night to 73% in 22 hours just in standby. I didn't change any settings that I can remember. Can anyone please help with this?
Thanks,
wws12
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I had the same battery issues on 4.2 in standby...even with wifi disabled. I ended up flashing back to 4.1.2 and battery is back to normal. To me 4.1.2 is more stable and much smoother. Hopefully Google will fix these issues in the next update.
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I noticed that a large portion of the battery is being used by something called "Media server" Any idea what that is or how to turn it off?
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I'm also noticing the same sleep mode battery drain on 4.2.1,around 1% per hour..
I need to root my tablet to downgrade?
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Use media scanner root from the play site and disable the media scanner. Then this battery drain should reduce.
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ashwinrajsr said:
Use media scanner root from the play site and disable the media scanner. Then this battery drain should reduce.
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Do I need to be rooted for this?
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wws12 said:
Do I need to be rooted for this?
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Yes. Root access is a must.
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I think in my case most of the battery issues was from the device being new and the software stats still needed more time to be accurate, that has happened to me on my Sony tablet also..
Now I can see some real stats as I use better battery stats app for keeping track of the battery.
I use my tablet as a use when needed device because it's not my notifications device that is always connected, for that I use my smartphone. That said I turn on airplane mode when I'm not using it and sync when needed as well.
Só when my Nexus 7 is in sleep mode it has very few apps and services running other than the system ones.
So the stats I came up with are:
1% in sleep mode with airplane mode on and Google Now and Location History turned on..
And..
0.3% in sleep mode with airplane mode and Google Now plus Location History off..
So for me no Google Now as I don't need that much.. It lasts 3x more in standby without it... And the truth is, in my country Google now for me isn't that useful as it is although I'm sure someday will be..
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It's strange...with stock 4.2.1 no root I haven't any battery drain... 0.7% /hour with wifi on and sync enabled...In the battery stats, even if in a hour i turn on the display on a minute, the display takes at least 40% of battery...
Since i updated my device to 4.2.1 charging my nexus 7 really get slow..... It takes 6 hours to 7 hours to fully charge. Im using the cable and charger that it came from the unit.
Is there a fix for this one? Thanks.
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AW: Is there a fix for slow charging issue?
Check whether the device charges in USB mode. It can happen for some reason I don't know. In this mode it charges much slower. I once had it happen when on AC.
It's on AC. It takes 6 hrs to fully charge from empty. =(
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Got a fix on the issue... Im rebooting my device everytime i charge it.
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ianmedina said:
Got a fix on the issue... Im rebooting my device everytime i charge it.
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What do you mean by rebooting it? I have the same charging problem. It needs about five to six hours for me to charge fully. How did you solve it? Is it really the problem of android 4.2.2?
Just try rebooting it or restart the device while charging. Im using battery widget reborn app, to see how many hrs left to make my nexus 7 to be fully charged.
Here's what i do,
Plug the charger then check after 2 mins on the app battery widget reborn how many hrs left to be fully charged, if it's says more than 4 hrs or greater than that. Hit the power button and restart your device. Once the device booted up, check the remaining time left on charging if it's improved to 3 hrs or less to fully charged your device.
Try it. It's working fine for my nexus 7.
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ianmedina said:
Just try rebooting it or restart the device while charging. Im using battery widget reborn app, to see how many hrs left to make my nexus 7 to be fully charged.
Here's what i do,
Plug the charger then check after 2 mins on the app battery widget reborn how many hrs left to be fully charged, if it's says more than 4 hrs or greater than that. Hit the power button and restart your device. Once the device booted up, check the remaining time left on charging if it's improved to 3 hrs or less to fully charged your device.
Try it. It's working fine for my nexus 7.
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I tried the app you mentioned. But the remaining time it indicates isn't equivalent to the real time used. Maybe this app doesn't work for my device, it still needs four to five hours for my nexus being fully charged. Anyway, thanks for your reply.
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Or you may try to go to bootloader, then turn it off.. Unplug the charger, then put it back in then turn on your device.. It works for me.
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My nexus 7 was fully charged and I put it in the rack in the night. Next morning it shut down completely. When I switched it on, it showed battery 0% says 0% the same c thing happened today as well. Its a new device. Any idea??
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Can you please show the screen snap of battery usage??
Sure.. Here is the screen shot..
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Some app or service is draining your battery. Get BetterBatteryStats to narrow it down.
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I installed battery saver app.. I will check if it can do any good..
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Like someone said before it's a rogue app and the only way your going to get the battery drain issue to go away is to figure out which app is doing it and then get rid of it.
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I think the best solution for you is to factory reset or re-install android on your device once.
It will be easier than finding out where is the problem. as screen snap shows most of the battery is drained by "android OS".
It was just my opinion you can take it if you want.
My battery usage. Even though my screen on time was only about 2 hrs most of the battery was drained by the screen. So there music be something very wrong in your case.
I don't know about android virus but that might be an option.
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I found that its day dream option got activated some how. I deactivated. Now its working great again.
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*Crosses fingers*
pcoruganti said:
I found that its day dream option got activated some how. I deactivated. Now its working great again.
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Gonna follow along and disable my daydream as well since I'm having the same problem you are with it actually draining while on the charger (Stock ROM, Franco Kernel, OEM wall wart with gold tipped USB cable). Tis quite annoying to have to either keep the screen off or power down completely in order for this bad boy to charge...
Just found a problem which happen several times on my Nexus 7.
When the battery is about 17%, my Nexus 7 will be turned off automatically like the device is out of battery.
I can't turn it on unless I charge it. After I charge it then I can turn it on. However the battery is still 17% which is the same as when it turned off.
I am wondering whether you have the same problem before. Thanks.
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Its weird after update to 4.4.4 my Nexus 7 is charging very but very slowly see( 2 hours 10%?!) ...and discharge too fast... I check the charger it works fine...
I get to 4.4.2 to see if the issue is because my battery, but is charging normaly..
Now I update again to 4.4.4 and the problem is still here
so really I don't understand why happen this .. Any thoughts ?
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Currently I do have the same problem. I cannot see any draining apps, it's only that the device charges very very slowly ...
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Did you tried a calibration of the battery?
etsch said:
Did you tried a calibration of the battery?
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Yeap it s the first thing I do when I switch Roms.. So I will let the ROM settle awhile.. a couple a days, and if the issue remain I go back to 4.4.2
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Also having the same problem here. Nexus 7 4.4.4 charging very slow and when I switch back to 4.4.2 the problem dissapears .
I didn't find a final fix for the battery issues.... At least a found out that it charging faster on "safe mode"