RECHARGEABLE 2000mAh BATTERIES USING NICKEL METAL HYDRIDE (NiMH) VOLTAGE 1.2V – THEY HAVE AN EXCELLENT CYCLE LIFE, RE-USE OF BATTERIES UP TO 1000 TIMES. THEY COME PRE-CHARGED AND READY FOR USE. WORLD FIRST TO BE MADE WITH RECYCLED BATTERIES (4% TOTAL WEIGHT) BETTER FOR ENVIROMENT ; HOLDS CHARGE UP TO 1 YEAR. THEY HAVE UP TO 5 YEAR BATTERY LIFE (UNDER TYPICAL USAGE PATTERNS)