The Energenie EG-BA-AA20R4-01 is a set of four rechargeable AA batteries designed to provide a sustainable power source for your everyday electronics. These Ni-MH cells offer a capacity of 2000 mAh and a voltage of 1.2 V, making them suitable for a wide range of devices that require reliable, long-term energy. With the ability to be recharged at least 500 times, you can significantly reduce waste and the cost of replacing disposable batteries. Each battery weighs 29 g and measures 14.5 mm by 50.4 mm, fitting perfectly into standard HR6 slots. They are constructed without lead, cadmium, or mercury, ensuring a safer profile for both you and the environment. Depending on the charging current you use, these batteries will be ready for use again within 2 to 10 hours, providing a practical solution for powering high-drain gadgets like digital cameras or wireless controllers.