?Attention?Batteries are precharged and ready for use, but only charge 30-50% for safety delivery, Not a quality problem if you get batteries with no power. So please fully charge first before use.In addition, recharging the battery every 3 months can make its lifespan longer. ?Environmentally friendly,?No harmful metal pollutants such as Cd, Hg and Pb. NiCkel Metal Hydride batteries use environmental protection material to prevent metal pollution. ?Widely Use and Low-Self Discharge?1000 mAh AA rechargeable nimh batteries can be used for solar lights, solar lantern, smart home devices, digital cameras, remote controls, lantern flashlights, power electric toothbrush, electric razor, tile grout cleaners, key board, mouse, toys, and other devices need AA battery. ?Advantages of Rechargeable NiMH Battery?As one of the new energy batteries, NiMH battery is safe and stable, without explosion risk, strong endurance, long power consumption, non scalding, long service life, durability and non-pollution, can be used in -4? to 140?, They can be charged even in the hot days and cold days. ?Long Cycle Life and Money Saving?1000mAh NIMH AA batteries can be charge-discharge up to 1000 times. saving your money on purchg one-time use disposable alkaline batteries. Low-Self discharge, it remain 80% capacity after 3 years if non-use.