8 pack, rechargeable nickel-metal hydride (NiMH) AA batteries Ready to use right out of the package; no initial charging needed Compatible with any NiMH charger Lasts 1000 times longer than alkaline batteries Suitable for low or high drain devices Ready To Go or R2G batteries from Lenmar are an ideal solution for high-drain devices like digital cameras or toys, as well as low-drain devices like remote controls or calculators. R2G batteries combine the ready-to-go convenience of alkaline batteries with the economy and high-performance of nickel-metal hydride rechargeable batteries. R2G batteries are ready when you are ¿ even straight out of the package; plus they hold their charge up to 4 times longer than standard NiMH rechargeable batteries. They are perfect for both low and high-drain devices, and they work with any NiMH charger.