Recently I purchased a replacement battery. The new battery has more capacity compared to the previous one.
The problem is Windows (Vista) does not report 100% charge for the laptop even when it is fully charged. Currently it only seems to charge up to 55%. But if I discharge it to 0%, the laptop can run 2 more hours at 0%.
I thought fully discharging the battery would help, but when I plug it in and charge it back, first it stays at 0% for a long time again, and then it starts to go up until it reaches 55% and stays there.
Is there any way I can calibrate this battery?