Canon NB-4L Battery (2-Pack) and Charger by Wasabi Power
NB-4L: 3.7v 1000mAh Li-ION battery for CANON digital cameras — Batteries America
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 Battery Pack for Canon Digital IXUS 80IS, 82IS, 100IS, 110IS, 120IS, IXUS 115HS, 220HS, 230HS, 255HS Digital Camera - AliExpress