Good Day,

I have a 2006 macbook pro. I bought a year ago a brand new battery, it has 82% health and 39 cycles have been used .

The problem:
Every time I don't use the charger, the computer turns off without any warnings, at different charge percentages. Sometimes 5 minutes after I disconnect the charger, some other times 20% of battery charge, or 80%. I reseted the battery, and the computer as well.

What should I do?