Sanyo eneloop XX High Capacity AA 4 Pack 2450mAh Minimum Ni-MH Pre-Charged Rechargeable Batteries Rechargeable AA Batteries 4-pack 2450mAh Minimum For Digital Cameras,Flashes ,Remotes, and More Pre-Charged and ready to use,High performance at temperature as low as -4 degrees F Pre-charged and ready to use right out of the package Can be recharged up to 500 times No memory effects allow batteries to recharged when fully or partially drained