Battery jumped from 10% to 30%.......what the duck?

[BullGuard8]

Strange......after 1 day and about 4 hours of usage, my battery was about 10% left. I thought let me leave it till the phone dies just to see how long the phone lasts......so I made a few phone calls here and there, checked email, used the camera, then after about an hour I take a look at the battery and it is 30%........after 3 hours now it's 10% and the phone is still running....no battery saving mode or anything....

what gives? This is good but surprised why it acts this way

 

[Rukbat]

New phone, new battery? It'll discharge "off the curve" for a while. (IOW, the terminal voltage - which is where the State of Charge number is coming from - doesn't follow the curve until the battery "settles in". It can even have a curve that doubles back on itself - which is what you seem to have.)

 

[BullGuard8]

New phone, new battery? It'll discharge "off the curve" for a while. (IOW, the terminal voltage - which is where the State of Charge number is coming from - doesn't follow the curve until the battery "settles in". It can even have a curve that doubles back on itself - which is what you seem to have.)

not a new phone nor battery but I reinstalled lollipop about 5 days ago