Canon CP-E4 Compact Battery Pack
Excellent Condition
Eight x AA batteries for longer life
Faster recycle times for the flashgun
It is weather sealed
Canon Compact Battery Pack CP-E4 for the Canon 600EX II-RT, 580EX/2, 550EX, 540EZ, 430EZ, MT-24EX and MR-14EX Speedlite Flash