JJC BP Series External Flash Battery Pack are designed for photographers making use of flash extensively. The battery pack is a high performance battery pack that reduces recycling time and increases flash capacity. Moreover, just by replacing connecting cords, it will work with different brands of flashes, including Canon, Nikon, Sony, Pentax, etc. You can install four or eight AA-type batteries in the pack to ensure a stable power supply for your flash, and can get a greatly increased number of flashes and a shortened recycling time. The battery pack is equipped with a 1/4"-20 screw, allowing you to mount it onto the tripod socket of your camera. The included soft case protects the battery pack from accidental impact and allows you to attach the battery pack to your belt for a more convenient use.
 
Product Highlights
Works with a vast array of different flashes (including Canon, Nikon, Sony and Pentax)--just change the connecting cable for the correct flash
Option to use 4 or 8 AA Alkaline, Lithium or Ni-MH batteries at a time
Greatly increases the number of flashes and reducing recycling time
With 1/4"-20 screw to attach the battery pack to your camera bottom or other places
Includes a carrying case 
Compact and lightweight
 
Specifications
Dimensions (W x H x D): Approx. 175 x 71 x 27 mm (6.9 x 2.8 x 1.1 in.) (body only)
Weight: Approx. 235 g (8.3 oz.) (without batteries)
Battery Pack Model
BP-CA1
BP-NK1
BP-SY1
Flash unit tested
Canon 600EX-RT
Nikon  SB-900
Sony HVL-F58AM
Fastest recycle time with 4 AA batteries in the pack
1.0s
1.2s
1.2s
Fastest recycle time with 8 AA batteries in the pack
0.7s
0.8s
1.0s
 
Test conditions: 
Using 4 Panasonic Eneloop Pro AA Ni-MH Batteries (2450 mAh) in the flash and 4 or 8 Eneloop Pro AA Ni-MH Batteries (2450 mAh) in the battery pack. Flashes are set to full power (1/1).
 
Compatibility
Model
Replaces
Compatible Flashes
BP-CA1
CANON CP-E4
Canon 600EX-RT / 580EX II / 580EX / 550EX / 540EZ / 430EZ / MR-14EX / MT-24EX
Nissin Di866 for Canon / Di866 Mark II for Canon / MG8000 for Canon
YONGNUO YN-560II / YN600EX-RT / YN560IV
BP-NK1
NIKON SD-9
Nikon SB-910 / SB-900 / SB-5000
 MG8000 for Nikon 
BP-SY1
SONY FA-EB1AM
Sony HVL-F60M / HVL-F58AM / HVL-F56AM / Minolta 5600
 
 
Package Contents
Battery pack x 1
Connecting cord x 1
Soft case x 1
1/4"-20 screw x 1
Gasket x 1
Instruction manual x 1
Warranty card x 1
 
NOTE:
The connecting cables of JJC BP Series External Flash Battery Pack are also sold separately. JJC CABLE-BPCA1 is the connecting cable of JJC BP-CA1. JJC CABLE-BPNK1 is the connecting cable of JJC BP-NK1. JJC CABLE-BPSY1 is the connecting cable of JJC BP-SY1.