Since 1931, Panasonic has been a leading manufacturer of battery technology and innovation. In 2005, they set out to develop a new type of rechargeable battery that would literally change the way people live, work and play. The result was eneloop, a Ni-MH rechargeable battery created with a very simple idea in mind; provide a common energy source that can be reused over and over again. This looping energy became known as eneloop. Today, eneloop battery cells are recognized by millions of consumers worldwide as the industrys premier rechargeable battery. Panasonic eneloop AAA rechargeable batteries can be recharged up to 2100 times, maintain up to 70% of their charge after 10 years (when unused and stored properly), are pre-charged at the factory using solar power and ready to use. These eneloop rechargeable AAA batteries are perfect for flashlights, gaming devices, headlamps, wireless keyboards and mouse, toys, remote controls and thousands of other household devices.