Charging Seats: 2 or 4 x AA 300mA 2 or 4 x AAA 120mA Feature: Countdown timer shows how long until batteries are charged Battery Fuel Guage shows charge status Bad Battery Alert detects alerts and shuts off charging when a non-NiMH or old NiMH battery is inserted Large visual display can be viewed from across the room Charges 2 or 4 AA or AAA NiMH rechargeable batteries Charges batteries at a safe, steady rate which improves the long-term health of the NiMH battery Energy Star certified Parts: 90 days limited Labor: 90 days limited