Canon NiMH Battery NB4-200 for Powershot Digital Cameras Pack of four rechargeable AA-size batteries Nickel Metal-Hydride technology free of memory effect 2100 mAh power rating Compatible with any digital camera that uses AA batteries Works with Powershot S1 IS, A80, A75, A70, A60, A40, A20, A10, A310, A30, A200, A100