Precision Design (4 Pack) 2900mAh AA NiMH Rechargeable Batteries For Digital Cameras, Speedlight Flash, Battery Grips & Photo Electronics Includes 4 ultra high capacity Nickel Metal Hydride (NiMH) batteries Memory Free - These NiMH batteries can be charged over 1000 times, and you don't have to run the batteries down before recharging. Fully compatible with any Digital Camera that uses AA-sized batteries Includes 4 ultra-high capacity Nickel Metal Hydride (NiMH) batteries Can be charged over 1000 times Memory-free, so you don&#039;t have to run the batteries down before recharging