Professional and portable battery charger for Sony NP-FW50 battery. 2 channels, can charge 2pcs batteries at the same time, save your time! 8.4V 730mA stable output, speed up your charging. Light indicators can show battery power status. International standard Micro-USB 5V input, can be connected to power adapter, power pack, car charger, computer/laptop for power supply, super convenient. The MCU mini chip can offer protections, including protection of over-voltage, short-circuit, over-temperature and over-charge.