Smatree Replacement Battery(2-Pack) and Charger Compatible for Sony NP-BX1 / NP-BX1/M8 Large Capacity for More Videos: 1600mAh battery pack for taking more videos. Fully compatible with original battery and charger compatible for Sony NP-BX1/ NP-BX1/M8. Long Lasting Cell Lifespan: Premium Japanese cells for longer battery life with no memory effect Three Ways for Charging: Mini rapid AC charger features a fold-out US plug, 110-240V input voltage, car charging adapter, and European plug Convenient Replacement Battery Pack: Charge Two Batteries at the Same Time: Innovative design allows you to charge 2 batteries at the same time. Capacity: 1600mAh; Voltage: 3.6V. High Quality: Designed with 4 ways of protection: over-charging, short-circuit, high-temperature and surge protection.