Charges 4 2200mAh AA in 15 minutes Includes 4 - 2200mAh AA batteriesSleek design120 volt AC adapterVery fast charge rate - 7.5 amp (7500mA) AA NiMH batteries and 3 amp AAA NiMH batteires. Charges batteries individually. Greenbatteries.com brand batteries work well in this charger too! (most high capacity NiMH batteries are OK with this super fast charge rate, but not all) Customer Reviews for the product - Energizer e2 15 Minute Charger for AA & AAA batteries & 4 - 2200mAh AA batteries