Battery Life Problems with Your MacBook? Calibrating the Battery Might Solve It
If you owned a MacBook for quite some time and have begun to experience problems with the battery, this post can help you. "What kind of problems?", you might ask. The battery life has been reduced considerably and it doesn't last much anymore.
But before thinking of buying a new one, try calibrating the battery instead. I have done this a couple of times and in most cases it solves my battery issues.