More on Amazon.com : http://www.amazon.com/gp/product/B00I44F0R2?tag=thefatkidin06-20 <br /> <br />Yongnuo SF-18C-USA Speedlite Flash Battery Pack with Canon-Style Power Cord (Black) <br /> <br />Extends shooting capacity with 8 AA batteries <br />Cord is compatible with Canon-style flash power ports <br />Hardware included for flexible mounting options
