The MH-C800S Charger with 8 Pro AA NiMH Batteries from Powerex contains eight NiMH AA batteries, which are useful for high-drain devices, and each have a capacity of 2700mAh and an output power of 1.2V. The charger can also charge AAA batteries so between AA and AAA batteries, they can be mixed in any combination within the eight bays to charge at the same time. Depending on how fast you want to charge your batteries, two modes can be set. The rapid mode will charge between one to two hours, and the soft mode will charge within three to four hours. Charging your batteries more often in the soft mode provides that the overall life of the batteries will last longer.