Compare Canon NB-4L Lithium-Ion Battery Pack 3.7v 760mAh vs Watson NB-4L Lithium-Ion Battery Pack 3.7V, 700mAh vs Watson Compact AC DC Charger for NB -4L or NB-8L Battery vs Pearstone Duo Battery Charger
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,