Features:
Large-capacity lithium battery (11.1V/4500mAH)・ it takes only one second to charge Canon 580exII・ Nikon SB900 and Sony F58AM flashes at the maximum power・ supporting about 1800 times of flashes.
Dual outputs for powering two separate flashes without reducing recycle time.
Optimized MCU circuit design・ more efficient energy conversion and more flashes.
Battery chamber replaceable and removable from the entire unit・ if you buy an additional battery chamber for replacement.
Concise LED display panel・ easy and fast to control.
Goxdox PB960 power back is designed to charge speedlite with external power input cable(sold separately)・ including on-camera flashes from Canon・ Nikon・ Sony・ and Godox・ etc.
With shoulder strap・ convenient for you to take it anywhere.

Specifications:
Color: Black
Battery pack: Lithium battery (11.1V/4500mAH)
Battery charging time: Approx. 3 hours
Flash charging time: Approx. 1 second (full power)
Flash time: Approx. 1800 times (full power)
Charger plug: US Plug
Shoulder strap length: Up to 120cm / 47.2in
Compatibility (need extra cable):
Cx Flash Cable: Canon 600EX・ 430EZ・ 540EZ・ 550EX・ Canon 580EX・ 580EX II and other flash model with same type of input power port (sold separately)
Nx Flash Cable: Nikon SB910・ SB28 EURO・ SB28DX・ SB80DX・ SB800・ SB900 and other flash model with same type of input power port (sold separately)
Item size: Approx. 16 * 11.5 * 5.1cm / 6.3 * 4.5 * 2.0in
Item weight: 560g / 1.23lb
Package size: 25.5 * 21 * 7cm / 10.0 * 8.3 * 2.8in
Package weight: 910g / 2.0lb

Package List:
1 * Godox PB-960 Battery Pack
1 * A/C Charger
1 * Shoulder Strap
1 * User Manual (English & Chinese)

Note:
If this product is used for a flash・ the flash must be installed with batteries that have certain power.
This item only includes the battery pack and the Speedlite not includes.