Energizer Rechargeable AA and AAA Battery Charger (Recharge Pro) with 4 AA NiMH Rechargeable Batteries Charges 2 or 4 AA or AAA NiMH rechargeable batteries at once (4 AA batteries included) State-of-the-art Charge Status Indicator system visually and audibly alerts on your batteries charge levels Get a full charge in 4 hours with the rapid charging power of Recharge Pro (times may vary by NiMH battery) Auto safety shut-off and overcharge protection features prevent damage from overcharging, helping to maximize battery life Built-in, fold-out plug design allows you to easily store the Pro Charger Battery Charger when not in use Compatible with all AAA and AA NiMH rechargeable batteries (Energizer Recharge batteries recommended) The worlds #1 recharge brand (according to market survey data)