Wasabi Power NB-3L Battery for Canon PowerShot SD10, SD20, SD100, SD110, SD500, SD550 Rechargeable lithium-ion battery for Canon NB-3L Rated at 3.7V and ultra high 1100mAh for extended use between charges Premium Japanese cells for longer battery life with no memory effect Fully compatible with the Canon camera and Canon charger Includes battery with 3-year manufacturer warranty