We all love portable devices because they provide flexibility. Ironically most of the time they are being used as desktop devices and are plugged in all the time.
This is potentially a problem because batteries wear off much more faster if they are not being used enough.
To protect your battery in your MacBook, MBP, iPod or iPhone let it completely go empty until the device switches off. Then, charge it to 100% again. This cycle will “format” your battery and allows it operate more efficiently on the long term. Format your battery this way at least once in two weeks. The more you do it the better.