Best Battery Calibration App?

[NCzerniak83]

I bought a spare battery for my Note 4 and I was wondering if I should calibrate them both first of all. Also, should I calibrate them each time I switch them out? I ask because the spare battery is a little different as far as the labeling. It's close, but same mAh, voltage, etc. And the spare seems to discharge a little more quickly.

Finally, is it bad to charge this phone, for these batteries I should say, with a charger that is different from stock, and charges at 2.1 amps? I figure it's not a big deal because the note for charges at 5V and 2A, but don't want to damage the battery, so thought I'd make sure.

Thanks in advance.

 

[EarlyMon]

http://www.xda-developers.com/googl...-battery-stats-does-not-improve-battery-life/

So long as they match the original mAh rating, no calibration is necessary or purposeful.

Voltage is pushed so stay at the rated limit - 5V.

Current is not pushed, it's pulled (drawn) by the phone and it won't draw me than its built-in limit.

You could put a 5V 10A charger on it and do no damage.