It might be an issue with the nightly and it'll vanish when Id ecide to update in a few nights, but after a night of charging. my N10 shows 0% battery if left on. Its not true, because I can reboot and it'll be at 100% and last all day. The screen's off and the tab's inactive. I don't stay up to monitor its charge. It also did this the first day I got this so I don't think its CM10.
But has anybody had this issue? Its not a dealbreaker, just weird.
Bump.
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Hello. Last two times I have had a very wrong percentage showing on the lock screen when charging my tablet. Yesterday my lockscreen showed 19% with the charger attached. When I unplugged it my tablet jumped to 98%. Anyone else having this behavior when charging? My tablet is updated with 1.139.05_COM_GEN1.
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I think I've seen similar behaviour once, don't remember the numbers but before unplugging the battery % was low, and after unplugging it jumped to full.
As far as I know, when you plug in the charger and screen off the machine. After charging for some times, when you turn on the screen, you need to wait a 'certain period of time' to let the tablet refresh the correct battery % & display to you.
Agree, I think everyone have the same problem. The most accurate is the light indicator of power button. Red mean charging and white mean full charged. Sometime white light indicator but logon screen show charging with percentage. It's because it haven't update yet.
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Nice that I'm not alone. I will wait and see if it changes after coming updates.
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Same problem here!
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Is there a fix for this....this very annoying...!
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I just got my nexus 4.
Last night I charged the phone completely, disconnected if from charger and turned the phone off.
This morning when I turned it on the battery was drained 15% down to 75%
Does anyone else have this problem?
Defect with phone?
Thanks for help.
You have to let the battery settle and let the battery stats calibrate. The % that you had after rebooting is what you really have. The first time it wadjt showing the right amount.
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android88 said:
You have to let the battery settle and let the battery stats calibrate. The % that you had after rebooting is what you really have. The first time it wadjt showing the right amount.
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Click to collapse
He said he turned his phone off...
I don't see how it can lose 15% if it is completely shut off. That's weird.
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Crisisx1 said:
He said he turned his phone off...
I don't see how it can lose 15% if it is completely shut off. That's weird.
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Then when he turned it on, he "lost" 15%. Like I said in my post, what it said before he turned it off was wrong. He didn't really lose 15%. It was just displaying the wrong thing.
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You might have some apps running in the background that is preventing your device from going to deep sleep to conserve power. Check what's running in the background when your phone is off. You can use better battery stats app to check what's consuming your battery level.
Are your running a custom kernel? I've heard of a few cases with kernels where even though the phone is sleep and screen off just touching the screen will cause battery drain.
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I'm guessing you either meant it was at 85% or drained 25% down to 75
Either way this is common on a lot of phones now due to the way the battery gauge works. When you turn your phone off then on it doesn't always remember where it was so gives a value and then if it's under where it should be it soon recalculates and can either starts going up or stays on the same value for a long time. This has happened on both my old SGS2 and also my N4 for example this morning while my phone was being drained by the FB app keeping GPS on, I turned off location access and then restarted my phone which dropped a few extra % and then sat for a good few hours at that % even though I used my phone.
Moral to the story is don't always take what you see as true, give it time to settle and see how it goes over a few charging cycles.
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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Click to collapse
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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Click to collapse
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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Wow check that out has anyone's device done that? Stock charger, batt went from 50% to full in round 5 mins...?!
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Then, after you reboot, the percentage stays the same?
Nexus4 modded with cyanogen.
mine done that once... but it was trolling me.
After reboot? Nah.. it dropped to 28%!
Fastest discharge in history too.
Fail
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My N4 did that once even worse, went from 7% to 100% in under 10 minutes, I was do confused. I had to run out so I grabbed it and took it with me, battery went to 97% after about twenty minutes then phone just shut off. Plugged in and had the red led. I plugged in and booted to recovery and let it charge a few, then booted up and it was at 3%, has been fine since.
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Do you by any chance have lightflow installed...? I recently had my Nexus 4 going from 29% to 100% in perhaps 10 seconds and I have never seen this before and I have had the phone since december but have just installed lightflow about a week ago - after a restart everything was back to normal though....
No lightflow here...also hasn't happened again either so it seems random.
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I purchased a nexus 7 recently,updated to 4.3,locked and unrooted as of yet. I currently have 2 user accounts active on it. Since my first 100% charge, I have been getting tacky battery life. I follow the 100% charge and discharge till 1% method. Overnight with WiFi on and all apps closed,I'm getting a drop from 74% to 57% . Looking in the battery stats doesn't help as it doesn't show any unusual ongoing background activity. I'm also getting around 6 hours Screen on time,I could never exceed this mark. I only have the customary Google apps,Facebook,Twitter, instagram,pulse,and 3 games installed. What can be the reason of this ?
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Those apps keep running.. Also some third party apps push ads and also turn screen on, which could drain battery..
For better battery life, you can turn wifi off if not needed,.
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I tried with WiFi off one night, I got around 9% drain still. I kept the sync interval at the maximum in every data fetching app I have installed too.
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You might well try the app Better Battery Stats, and see what it believes is keeping your tablet from going into deep sleep. 9% drain overnight is not terribly excessive -- it should be more like 5%, I guess.
My 2012 nexus 7 had 51% before I went to sleep last night and when I woke up this morning it was completely dead. I didn't even get a charge icon when I plugged it in to charge. I had to leave it for an hour then tried again and it fired right up.. Hope I can see what's causing the drain with better battery stats
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I was using mine once in the morning,when the battery hit 4% it suddenly shut down. I tried to charge but the battery icon wouldn't show up. Started it finally using the tips on the Google support site. Must say,I've been plagued with battery issues. I'll try a factory reset and while on it unlock the boot loader too.
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I checked with BBS with WiFi off overnight. "PowerManagementService.wake lock" is keeping my N7 awake. Any solutions?
EDIT: I checked in partial wakelocks,AudioOut_2 was the highest at 30m runtime.
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