Bower XPB429 Extreme Power Rechargeable 2900 mAh AA Batteries Includes four 1.2V/1000 mAh AAA high-power batteries NiMH or Nickel Metal-Hydride Battery has excellent battery power and high-capacity energy storage Compatible with corresponding digital SLR and point-and-shoot cameras 100% memory-free for easy charging at any energy level Can be charged over 1100 times