ENERGIZER MAXI CHARGER + 4 X NIMH AA 2000MAH BATTERIES – NICKEL METAL HYDRIDE TECHNOLOGY: RE-USE BATTERIES 100'S OF TIMES – ECONOMICAL POWER SOLUTION FOR HIGH TECH DEVICES – CHARGERS AA AND AAA NIMH BATTERIES – AUTO SHUT OFF SAFETY TIMER - RECHARGEABLE 700mAh BATTERIES USING NICKEL METAL HYDRIDE (NiMH) VOLTAGE 1.2V – EXCELLENT CYCLE LIFE, RE-USE BATTERIES UP TO 1000 TIMES – 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, UP TO 5 YEAR BATTERY LIFE (UNDER TYPICAL USAGE PATTERNS)