JJC FB1 External Flash Battery Pack for Canon 580EX, 580EX II, 550EX, 540EZ, MR-14EX, & MT-24EX Speedlite Flash Units
The Flash Battery Pack is an external power source for a higher flash capacity. This high performance power pack is a light, compact external power source, used for Canon flashes. This is a must for event photography such as weddings, and for high frame rate Canon cameras.This product uses 8 AA batteries (not included) and connects to the flash.Compatible flash models: Canon Speedlite 580EX II, 580EX, 550EX, MR-14EX and MT-24EXProduct dimensions: 69mm(w)x158mm(h)x25mm(d)Note: The Battery Pack is not produced by Canon but the quality same as Canon.