Panasonic Eneloop Pro AA high capacity Ni-MH pre-charged rechargeable battery deliver up to 2550mAh typical, 2450mAh minimum. Recharge eneloop pro AA rechargeable batteries up to 500 times. Included Batteries are pre-charged and ready to use. Maintain 85% of power after 1 year, when not in use. Rechargeable over 500 times. The Panasonic CC65 battery charger individually charges each eneloop pro AA and AAA rechargeable battery, resulting in a perfect charge every time, utilizing 4 individual LCD indicators that highlight charge and discharge time, battery cell voltage, and mAh discharge levels for each eneloop pro or eneloop rechargeable battery. The CC65 battery charger will charge 4AA or 4AAA fully discharged eneloop pro in up to 4 hours, 2AA or 2AAA in 2 hours, or 4AA or 4AAA eneloop cells in up to 3 hours, 2AA or 2AAA in 1.5 hours. The CC65 battery charger also features a USB charging port; 5V 1a that can be used to charge other devices