USN3 Pro is QC 2.0 available charger which can charge two Sony batteries simultaneously with the USB input and display real-time information of the charging status.
DC 5V/2A or 9V/2A
Slot 1 8.4V±1% Slot 2 8.4V±1%
QC Mode: 1200mA*1 (MAX), 800mA*2 (MAX)
Sony NP-FM500H / NP-F730 / NP-F750 / NP-F770 / NP-F970 / NP-F550 batteries