Samsung Galaxy 10.1 tablet, battery charge

[Hum]

Could the battery be going bad ?

 

I've had this tablet about 2 years.

 

I charge it up to 100% -- which used to last about 6 hours.

 

Now when I use it away from home, after say, 2 hours, I get a battery-low warning -- plug device in.

 

But the strange thing is, when I get home and plug in the charger, the screen says anywhere from 30 to 70% charge left.

 

Any ideas ?

 

 

[Hum]

I added a battery charge management app.

 

It seemed to help a little.

 

But after using the tablet for about 3 hours, it said 10% power left.

 

Plugged it in at home -- read 56%.

 

Something in the OS software must be screwy.

 

Maybe I will back-up files and do a Factory reset.

[The Evil Overlord]

I'm thinking battery abuse, try draining it completely, and then a couple of power cycles

other than that, probably needs a battery change

 

what I do find interesting however, is that I have the 2010 version of that tablet and it'll go weeks between charging, (but that's very light use and reading)

[Hum]

59 minutes ago, The Evil Overlord said:

I'm thinking battery abuse,

I never abused the battery -- it was asking for it ....

[The Evil Overlord]

1 minute ago, Hum said:

I never abused the battery -- it was asking for it ....

well I hope you taught it a lesson it will not forget in a hurry

I hate when batteries think they can do whatever they want without fear of repercussion...........

 

wait, what were we talking about?

[HoochieMamma]

If you have done a full reset/made sure its not an app using CPU or making the tablet sleep correctly then I would just replace it.

 

http://www.ebay.com/itm/Genuine-SP3676B1A-1S2P-Battery-for-Samsung-Galaxy-Tab-10-1-P7510-P7500-N8000-/152225116098?hash=item237152efc2:g:OxIAAOSwFV9XxvEy

 

https://www.ifixit.com/Guide/Samsung+Galaxy+Tab+10.1+Battery+Replacement/18432

 

Never ever let your battery go to 0% it destroys Li-Ion batteries doing so. Let them get to minimum 35% and then recharge them to 100% and then disconnect them.

[The Evil Overlord]

Just now, HoochieMamma said:

Never ever let your battery go to 0% it destroys Li-Ion batteries doing so.

I hear everyone say this, but to be honest I'm not even sure what this means, I've always fully discharged my lithium batteries

(By this I mean the device will turn off from lack of power <I understand that there is still power within the cell and it's not completely 0%> sometimes I won't even bother charging the device until the next morning, and devices like my note 10.1, or my 2012 moto g still run fine)

 

If it's a guideline, then so be it.

[Hum]

I think 10% is about the lowest it ever gets.

 

I mildly panic and turn it off.

 

For the first couple of years, I could rely on my tablet to go 6 hours.

 

I don't understand why the 2 different readings, saying 10% when it really is 56%, or whatever.

[The Evil Overlord]

Try leaving it idle after it's been charged, just so you can gauge how long it takes to discharge?

[HoochieMamma]

2 hours ago, The Evil Overlord said:

I hear everyone say this, but to be honest I'm not even sure what this means, I've always fully discharged my lithium batteries

One of the worst things you could do;

 

http://www.howtogeek.com/169669/debunking-battery-life-myths-for-mobile-phones-tablets-and-laptops/

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

http://lifehacker.com/smartphone-battery-myths-explained-1735327089

http://mashable.com/2014/06/18/phone-charging-myths/

 

 

[The Evil Overlord]

27 minutes ago, HoochieMamma said:

One of the worst things you could do;

 

http://www.howtogeek.com/169669/debunking-battery-life-myths-for-mobile-phones-tablets-and-laptops/

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

http://lifehacker.com/smartphone-battery-myths-explained-1735327089

http://mashable.com/2014/06/18/phone-charging-myths/

 

 

Oh I believe you

(personal experience, and I do mean personal, I'm only speaking for myself, I've never had a battery issue, my first lithium ion battery device was a nokia 8110 I think, done it ever since)

[Hum]

If I would do a Factory reset, would my Android tablet return to the Kit-kat version ?

 

Lollipop screwed up so many things.

[The Evil Overlord]

No, it'll be whatever the current operating system version it is running at the time

as far as I can tell it basically wipes all user data (not on the sd card if applicable) and restores the installed os

Then you'll have to re download all your apps (not a problem as play store keeps a record) and restore your personalised settings