2 x CR2 700mAh Lithium Great Power Battery for Digital Camera CR2 3V 700mAh Lithium Battery. This is not rechargeable battery, single use please do not recharge. Usually good til expiration but will depend on storage may last longer or shorter. This battery common use for camera, flashlights, medical equipment, photo equipment, electronic equipment, electronic games, etc. Size: 2.7cm x 1.5cm x 1.5cm - 1.06inch x 0.59inch x 0.59inch.