Over time, you may notice that your battery doesn't hold a charge as long as it used to. This may be caused by frequent charges/drains or infrequent battery use. It is recommended that you "condition" your battery a few times a year to get the most out of it. To do this, simply charge your battery to the fullest and then disconnect the AC adapter plug. Make sure any power saving alarms or options are disabled and simply let your notebook run until it completely drains the battery and turns itself off. Plug your notebook back in and completely recharge the battery before using it. This conditioning or "cycling" of the battery will help it retain a fuller charge for a longer period of time.