Nitecore USN3 Pro Dual-Slot Fast Digital Sony Camera USB Charger Black 6952506492862. The USN3 Pro can charge two batteries simultaneously with a maximum output of 800mA in either slot when using a 2A output USB power adapter. When the charger is connected to a quick charge (QC) power adapter the screen will show Quick Charge and a single slot will achieve a max output of 1200mA. A brightly lit LCD display reports real-time information including battery health charging time charged volume charging current battery voltage and type and charging mode. No need to worry about overcharging your batteries as the USN3 Pro offers an intelligent USB charging management system that automatically applies the correct charging currents and prevents damage caused by improperly inserted batteries. This lightweight and compact charger is compatible with universally available USB power sources like laptops and power banks and includes a removable USB cable. The USN3 Pro supports various battery types (Sony NP-FM500H NP-F730NP-F750 NP-F550 NP-F970 NP-F770) and camera models (a99 II a77 II a99 a68). Specifications for Nitecore USN3 Pro Dual-Slot Fast Digital Sony Camera USB Charger: Manufacturer: Nitecore Color: Black Length: 4.92 in Size: One Size Age Group: Adults Package Type: Box Fit: Sony NP-F550 Sony NP-F730 Sony NP-F750 Sony NP-F770 Sony NP-F970 Sony NP-FM500H Weight: 3.5 oz Height: 1.14 in Width: 2.76 in Features of Nitecore USN3 Pro Dual-Slot Fast Digital Sony Camera USB Charger Dual slot charger for NP-FM500H NP-F730 NP-F750 NP-F770 NP-F970 NP-F550 batteries 3 hours to fully charge 2 batteries Displays information on battery level voltage and health Reverse polarity protection and anti-short circuit protection Compatible with power banks 5V solar panels and USB adapters 1200mA single slot MAX output Package Contents: Nitecore USN3 Pro Dual-Slot Fast Digital Sony Camera USB Charger USB Charging Cable Instruction Manual Nitecore 6952506492862: USN3 Pro Dual-Slot Fast Digital Sony Camera USB Charger Black