Wasabi Power Battery Charger for Canon NB-3L and PowerShot SD10, SD20, SD100, SD110, SD500, SD550 Fully charges the battery in approximately 60-90 minutes. Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock. Dual voltage unit (110- 240V) can be used worldwide! CE Safety Certification. UL Listed. Meets (or exceeds) OEM standards. 1 Year Warranty.