Hitech - AA Rechargeable 2500mAh Ni-Mh Batteries for Canon PowerShot SX100 IS / PowerShot S5 IS / PowerShot S3 IS / Powershot S2 IS / PowerShot S1 IS Digital Camera. 4 AA rechargeable 2500mAh Ni-Mh batteries Capacity: 2500mAh (the higher capacity of battery, the longer running time it powers your camera) Ni-MH chemistry, no memory effect. Great for cameras using AA batteries or any devices using AA batteries Can be charged up to 300 cycles (approximately) and cost saving than alkaline batteries