Size AA NiMh rechargeable battery (2500mAh). Application/Usage: Camera Battery Rechargeable: Yes Battery Chemistry: Nickel Metal Hydride (NiMH) Battery Capacity: 2500 mAh Output Voltage: 1.2 V DC Compatibility: Canon PowerShot Digital Cameras: S3 IS,S2 IS,S1 IS,A430,A530,A540,