Hi, I'm using my macbook pro mostly as a desktop plugged into a monitor, but I occasionally bring it to school. After killing my first battery, I've finally learned to not keep it plugged and charged 24/7, yeah real stupid. If I infrequently use the battery, should I take it out when using it as a desktop? How often should I actually use the battery to keep it from going "stale"? I just busted out what little money I had for a new one, so I want to keep it alive for as long as possible. Thanks!