Default [Q] [PROBLEM] my battery percentage doesn't show more than 70

hello everybody, thanks for coming out tonight!

the problem:
no matter how much i leave my wildfire charging, it DOES NOT REACH 100% and the percentage that it reads at most is 70%
this problem occurred after i used Battery Callibration app to calibrate my battery (i tried to calibrate cause i thought that it reads wrong percentage)

is there ANYONE helping me out please?

p.s. i have root access and i have tried hard reseting (bootloader clear storage) and format \cache \boot \system \data in recovery and all......... nothing helped! i also tried several roms including cm7.2 and RUUs. non of them helped.