Canon CP-E2 Battery
DISCONTINUED
For use with 550EX, 540EZ, 430EZ, MR-14EX, MT-24EX Speedlites. Accepts size AA-Size Lithium, Alkaline and Rechargeable Ni-MH or NiCd Batterries. Reduces the recycle time by approximately half, and the number of flashes is increased by about 3 to 4 times.