Battery life

[mdk32014]

Is there any sort of app or feature to tell me good my battery is in my samsung galaxy s3 whether it is good or needs to be replaced.

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[Rukbat]

We probably can.

How low do you normally let it go before you charge it? How old is it? How long does it last between charges? And, if you take it out of the phone and put it on a flat surface (like a table) and tap a corner, does it spin? (If it does, there's a bulge and that means it's bad.)

 

[mdk32014]

I have a samsung galaxy s3. 1 battery I bought brand new from Verizon so it's fine I'm sure the other one came with it and it is a little fatter. I use it as a backup. I was wondering if there was any sort of app or something that would give a exact amount life left in the battery such as 25% battery health. I had a laptop once they have this something like a HP battery checker that would tell me when the battery needed to be replaced and if it was what was wrong with it for example bad sales or something. Is there anything like this with the phone or is it either good or bad. Thank you very much. I tried to heat the battery above half as bad as what I've heard you were supposed to do but that does not always happen sometimes I charge it at 50% sometimes at 10%. It all depends on what I am doing.