Energizer value battery charger. Charges (2) or (4) AA or AAA NiMH rechargeable batteries. LED (light emitting diode) indicator light. Sleek, compact design with fold-out plug. When charging only 2 batteries, place batteries in the 2 positions to the left or right. Estimated charging time: AA 13 to 18 hours, AAA 11 to 12 hours.