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[Q] Galaxy Tab battery drains full to empty in 20 minutes

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Deadbeef
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Question [Q] Galaxy Tab battery drains full to empty in 20 minutes

Yesterday morning I pulled the TAB from the net adapter. Immediately it beeped and turned off. Plugging it back in, the battery indicator went from 0 to 100% in 5 minutes.
Turning it back on, it died in 10-20 minutes.
Turned it back off again, fully loaded it again and played a movie on it, 50% back-light. It lasted for just 20 minutes.

I made a backup to SD, did a factory reset and charged the unit (powered off) to 100%.
Did a restore, and everything worked again.
Battery is still working at 80% after an evening of restoring apps and a night of stand-by.

What the heck happened?
 
lambstone
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perhaps one of your apps? try installing them a few at a time to see which app is causing it
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Deadbeef
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Quote:
Originally Posted by info5i2002 View Post
perhaps one of your apps? try installing them a few at a time to see which app is causing it
I also think it's a software problem, after the problem disappeared with the factory reset.

I'm going to check slowly which program is the culprit.
I just can't imagine that a program can stress the TAB so hard it realy drains the battery.
I think it could probably be a misguidance of the android OS from a wrong setting?
 
MasterRy88
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I had a similar problem but not nearly as bad as yours. I had my tab unplugged for a while and checked the batter: 30%. So that was fine so I opened up dolphin and INSTANTLY the screen went really dim and said I had less than 3% battery which I did not believe.

Turning the tab off and back on the battery was now at 27%. This only happened that one time and I havent seen it agian. Must be some weird battery level reading bug.....
 
morkman
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I have the same situation and also make a backup and factory reset amd later a restore.
That was 2 months ago and until now it works like a charme.

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Dann
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Default Power off g tab drain the batt

I have my Galaxy Tab for about 3 days ago. Charge to 100% the battery, and then, I decide power off (totally) the Tab. Hold power button, and in the pop-up window, power off the phone!!

After a 1 hour, I saw the screen message with the android icon "POWER RESET or UPLOAD MODE"....and drain totally the battery!!!

What can I do???

See the attached image.......please help me!!
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Only 2 things are likely to cause this, the battery being stuffed, or the battery stats database getting corrupted. You could try the "bump charge" method and see if it resets it. (Charge fully while on from AC, unplug, turn it off, charge for an hour or so from AC, unplug, turn it on, turn it off again once booted, charge for another hour or so, unplug, turn it on).

The battery stats can be wiped from the CWM recovery if you wanted to flash that, I'm not sure where the file lives to do it manually.
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henrylam
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Originally Posted by Dann View Post
I have my Galaxy Tab for about 3 days ago. Charge to 100% the battery, and then, I decide power off (totally) the Tab. Hold power button, and in the pop-up window, power off the phone!!

After a 1 hour, I saw the screen message with the android icon "POWER RESET or UPLOAD MODE"....and drain totally the battery!!!

What can I do???

See the attached image.......please help me!!
Hi, just like to share my experience with you guys. I encountered the same problem as mentioned, especially the sudden request to shut down due to battery becoming 3%, although it has 50% left. I tried recharging a few times but the same thing happens, something, it will shut down at 30% battery power level. Then, one afternoon, while I was looking at my pictures (at Gallery), I saw duplication of my photos (3 times) that appeared on my gallery folder. But the key issue is I stored all these pictures (taken by camera or by transfer from PC) in the microSD card (8GB). I tried to do a deletion on the addition pictures (it showed 3, so I tried to delete 2). But to no avail, and the system keep processing even though I tried stopping it. After about 2 minutes, the promot came up, requesting me to do a shut down saying the battery level was low, although I have about 50% battery power left. So, I shut down the tab immediately and removed the microSD card. After that, I switched on the tab and it says 50% power left. But I have to make sure it is possible to utilize the tab until it drains out the battery. Finally, I managed to cross the 20% power level and the tab can still be used .

I was curious about my microSD card, thinking that it may be faulty. I used a pc to open up the content and I discovered the SD card has no problem at all, it didn't have duplication when viewed from the pc. For your information, I have installed "angry bird" onto the 8GB microSD card, I am not sure if it is causing any problem to the tab or draining power from it, because the download (from Goggle market) mentioned something about "preventing phone from sleeping - System tools". I am not sure how this is link to the duplication of the pictures in the gallery folder as well, but I am glad I have found the fault to the draining of the power by the tab.

I would suggest, before anyone proceed with the factory reset, do a check on your storage card or the apps that you have installed in your tab, try to solve the simple way and it can save us a lot of troubles .

I hope it helps............

Henry Lam
 
Beards
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(Last edited by Beards; 4th February 2011 at 08:46 AM.)
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As knightnz mentions ~ It's the Battery Stats Database being corrupt.


To repair, simply:-
Connect the Tab to it's Charging Cable and ensure the Tab is switched Off.
Next, hold the Power On Button whilst at the same time touch and hold the screen.
You will notice the battery indicator will pop up.
The Tablet will now reboot.
Everything should now return back to normal.

This procedure can also be used for a Tab that refuses to switch on.
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shinji21
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Should I do this when the tab is off? or when it is on?

I actually tried both, but I dont see "the battery indicator pop up" as mentioned.

Quote:
Originally Posted by Beards View Post
As knightnz mentions ~ It's the Battery Stats Database being corrupt.


To repair, simply:-
Hold the Power On Button whilst at the same time touch and hold the screen.
Next you will notice the battery indicator will pop up.
The Tablet will now reboot.
Everything should now return back to normal.

This procedure can also be used for a Tab that refuses to switch on.

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