This Panasonic BQ-321 battery charger is a versatile and reliable option for charging your AA batteries. With a battery capacity of 4 amp hours and a voltage of 1.5V, it is compatible with various battery types and sizes. The charger is designed for easy use and comes with a unit quantity of 5. Ideal for multipurpose batteries and power, this charger is a great addition to your consumer electronics. It is a type of battery charger that is perfect for charging your batteries efficiently. The chemical composition of the charger is NiMH, making it a long-lasting and dependable option for your charging needs.