Cell puffed

[Sojourner1]

On my Galaxy S3 tablet. This is my second battery, I replaced the original battery over a year ago. I knew it was on its way out and ordered another battery to replace it and sure glad it arrived 2 days after it puffed.


New on the left, old on the right.


Good as new now.

 

[Steve_S]

You better check the voltage & amps coming from your power supply to the tablet.
Alternately, this could be the result of failing electronics (the wee bms it has). Some of these batteries have the BMS board attached to them, for others they are separate daughter board. Samsung has used both types in their devices, I dunno about the Galaxy Tab. Simple enough to know, if the battery has a small electronics board on it, that is it's BMS. BEWARE OF KNOCK OFFS ! LiPoly is good generally and I think Samsung uses SK cells.

 

[Sojourner1]

I use the tablet like a laptop, it might be on for 4-8 hours and more at times. Most likely more than it should which in turn wearing out the battery faster and needing it to be plugged in more, viscous cycle but I love the compactness of the tablet. Batteries are cheap at $35 +/- and only takes 15 minutes to change it out.

I believe all charging regulating is done by the tablet (maybe I'm wrong) but the battery has nothing attached to it other than connection wire.

I should of changed out that battery sooner when I was only getting 1.5 hours out of the battery instead of 8-10 hours.

User abuse will cause a puffed cell just like some of the folks here with "their better" or interpretation way of intial top balancing of cells.

 

[Steve_S]

Definitely no BMS on that.
Never heard of Hezens batteries either.
There is likely some discussion somewhere about the Samsung tablets and their batteries which may be more informative. This forum is not quite the pace for this. Well unless you wanna make a Franken Batt for it ! Hmm 3.8V/200AH, you'd get serious hours ! haha