Unexpected shutdown on battery power
My computer is shutting down unexpectedly while on battery power only. The computer reports the battery is functioning properly, but it obviously is not. Apple store will fix everything wrong with the computer for $280. I think replacing the battery will fix the problem. I don't really want to invest $280 into repairing a four year old laptop, but I might be willing to spend $100 and replace the battery myself. How can I find out if the battery is really the problem? Can a battery fail in such a way that it just loses power randomly while reporting anywhere from 5% to 99% charge?
Is this a good question?