With a life span of up to 1000 charges, this 4 pack of rechargeable 900mAh AAA batteries are a simple and reliable source of power for your everyday devices. Their long shelf life means they are always around when you need them with 80% energy retention after 1 year. The rechargeable hybrid technology (nickel-metal hydride) allows for less waste than with standard disposable alkaline batteries. Please note the charging device is sold separately. The batteries contain 0% of harmful metals cadmium and mercury. Each battery casing prevents leakage to protect your family's devices and is made up of anti-corrosion components. Package Includes: 4 x AAA 900mAh Rechargeable Batteries