The Energizer NiMH Battery Charger CHVCM4 is a mains charger designed to power AA and AAA batteries efficiently. With a 4 battery capacity and NiMH chemical composition, this charger is ideal for high and low drain devices in various applications. The unit comes with a 1-year manufacturer warranty, ensuring reliability and peace of mind. At 3V voltage output, this charger from Energizer is a practical and durable solution for keeping your batteries charged and ready for use.