Want to give your Mac a longer life-span? Tired of your computer battery not holding a full charge? Here is what you can do to remedy that!

First completely charge your battery- it is ok to use your computer while your battery is charging at this point. Another possibility would be to charge it overnight. Then, completely drain your battery until your Mac shuts down, by using it without charging it and leaving it on. Now, completely charge your battery again this time WITHOUT using your Mac while it is charging. This recalibrates the chip in the battery so the battery will again hold a full charge.