7.2V NiMH Rechargeable Battery Pack for the Celltron Advantage. The battery pack can be recharged by the Celltron Advantage or with the CA096 desktop charger. The battery pack holds a nominal capacity of 2280mAh of standard charge, providing a full day of testing. It also has a rapid charge rate of 2250mA per 1.2hrs, for a quick recharge.