DIGITAL CHARGING STATUS & OVERCHARGE PROTECTION – Battery voltage, charging current, temperature, and battery level are displayed in real-time on a large, brightly lit LCD display. This display will also alert users to incompatible/poor battery installation and provides reverse polarity, anti-short curcuit protection, and overcharging    
CONVENIENT USB CHARGING – The USN3 PRO offers easy USB charging for Sony camera batteries and additional compatibility with portable power banks, solar panels and adapters for backup power anywhere. A storage trough on the side of the charger keeps the USB cable secured and out of the way when not in use.    

PACKAGE CONTENTS - Nitecore USN3 PRO Charger, Lumen Tactical Adapter, Instruction manual    
Introducing the Nitecore USN3 PRO Dual Slot USB Travel Charger designed to recharge Sony Camera NP-FM500H NP-F550 NP-F970 NP-F770 NP-F730 NP-F750 batteries. This lightweight and compact battery charger features a built-in USB charging input that stows away in a designated secure trough to save space and prevent damage.
A brightly lit LCD display reports key battery information including battery type, capacity, voltage, charging status and health. The USN3 PRO offers smart charging management to automatically apply the correct charging current, prevent overcharging and protect against improperly inserted batteries. Compatible with many solar panels and power banks

Input
DC 5V/2A or 9V/2A
Output voltage
Slot 1 8.4V±1% Slot 2 8.4V±1%
Output current
QC Mode: 1200mA*1 (MAX), 800mA*2 (MAX)
Standard Mode: 1000mA*1 (MAX)
Battery compatibility
Sony NP-FM500H / NP-F730 / NP-F750 / NP-F770 / NP-F970 / NP-F550 batteries