With their quick charge capability and higher voltage than in ordinary batteries, the NiZn AA batteries can deliver a maximum of current in a short time. Save money: The AA batteries can be charged more than 1000 times and impress with constant power output without self-discharge - everywhere else alkaline AA batteries are used. Low self-discharge and high cycle stability ensure a particularly long service life and a long service life for the AA batteries. Environmentally friendly: The AA rechargeable batteries are free of heavy metals and impress with their particularly low self-discharge, which guarantees a long service life. Included in delivery: 4x NiZN AA batteries with 1600mAh & 1.6V - can only be charged with a nickel-zinc charger.