Energizer Recharge Universal Chargers - 3 / Carton - 6 Hour ChargingAA, AAA, C, D, 9V

Includes bad battery detection, short circuit/reverse polarity protection and delta V charging cut-off Charges batteries in about 3 to 7 hours Automatically shuts off when batteries are charged; built-in safety timer to prevent overcharge Charge LED status indicators tell you if batteries are charging or ready Charges NiMH and NiCad batteries in cell sizes AA, AAA, C, D and 9V Energy efficient - designed to use less energy than alternative products, potentially helping you save money and reduce your carbon footprint.