Wasabi Power Battery Charger for Sony NP-QM50, NP-QM51, NP-QM71, NP-QM71D, NP-QM91, NP-QM91D 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! Includes European plug adapter. CE Safety Certification. UL Listed. Meets (or exceeds) OEM standards. 3 Year Warranty.