The Duracell Rechargeable NiMH Model CEF14NC Class 2 Battery Recharger is a versatile plug-in unit designed for charging AA batteries with a capacity of 4 batteries and a total amp hours of 3 Ah. With a voltage of 3V and NiMH chemical composition, this grey-colored charger is compatible with various consumer electronics devices. Made in China, this unit offers a convenient and efficient way to recharge your batteries, ensuring a reliable power source for your devices.