mmm
well in the apple page it says this
Standard Maintenance
For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Apple does not recommend leaving your portable plugged in all the time. An ideal use would be a commuter who uses her MacBook Pro on the train, then plugs it in at the office to charge. This keeps the battery juices flowing.
:/ right now battery capacity says 5105 , and original capacity says it is 5020
should i leave it as much as i can plugged in ? or do what apple says?