Amazon.com: Kastar Battery (2-Pack) and Charger Kit for Canon NB-4L, CB-2LV work with Canon PowerShot SD40, SD30, SD200, SD300, SD400, SD430, SD450, SD600, SD630, SD750, SD780 IS, SD940 IS, SD960 IS, SD1000,
NB-4L NB4L NB-4LH 3.7V 850mAh Li-ion Battery Pack For Canon Digital Camera | eBay