Xtech AA Ultra High-Capacity 3100mah Ni-MH Rechargeable Batteries (4 pack) 4 Pack Ultra High-Capacity Ni-MH Rechargeable Batteries Perfect for digital cameras, flashes, toys, remote controls, flashlights, portable audio players & all high drain electronic devices Comes already partially pre-charged from the factory Improved low self discharge, Memory Free, Rechargeable up to 1000 times Can be charged in the Xtech Battery Charger or most other AA battery chargers