M7 turns off at ~45%?

Hello,
I have a problem with my battery stats...
I'm using ArtMod V10 ROM and it shows ~45% -> Then it suddenly turns off and you need a charger.
The battery now shows 1%.

Is there any fix for that or just a bad battery?

from xda-developers http://ift.tt/28Tiagm
via IFTTT