I've been searching around google for the proper way to prolong my MBP's battery life and have not been able to find a straight forward answer. In the past all the notebooks I've ever owned would eventually have a very poor battery life. I'm hardly ever using my notebook anywhere where I cannot plug my battery into the charger. So my question is this: Is it best to always leave your battery plugged in, even when it's battery is at 100%, OR when it reaches a full charge (100%) should I unplug it and let the battery drain to 0% ?