A myriad of electronics, including digital cameras, remote controls, games, and flashlights, will run on these Eneloop Pro AAA Rechargeable Ni-MH Batteries from Panasonic. They come pre-charged via solar power and can be replenished up to 500 times. As the cells are not subject to any memory effect, their full capacity will continue to be usable after each charge cycle, regardless of whether they are fully or partially drained at the time charging begins. Additionally, thanks to a very low self-discharge rate, they will maintain 85% of their power after one year. Built for durability, the batteries are capable of withstanding extreme temperatures as low as -4°F. The AAA cells are offered here in a pack of four.