Interfit Photographic STR233 Strobies Pro-Flash Spare Battery, 4500mAh, 700 Pro-Flash Flashes/1800 Speedlight Flashes

The Interfit STR233 Strobies Pro-Flash Spare Battery powers the Strobies Pro-Flash Battery Pack and allows you to quickly swap out batteries during shoots. It is a lithium-ion battery that will recharge in approximately three hours and has a capacity of 4,500mAh. This will let you get about 700 full-power flashes with the Pro-Flash One Eighty or up to 1800 with a standard speedlight.