The Quantum Instruments Turbo SC Battery Pack Kit ("S" for Slim and "C" for Compact) provides typical all-day flash shooting capacity like the standard Turbo, yet weighs less than 1 lb and fits easily in a shirt pocket. This kit includes the CZ Dedicated Module (connection cable), which allows it to connect to Canon 430EZ, 480G, 540EZ, 550EX, 580EX, 580EX II*, MT-24EX and MR-14EX flash units.
State-of-the-art NiMH batteries power the Turbo SC for lightning-fast recycling times and high capacity. Despite its mini proportions, it provides up to 225 full-power flashes with Quantum's Qflash units, or 400 shoe mount flashes, on a single 1.5-hour charge. And, like all Quantum batteries, the Turbo SC features a computerized "fuel gauge" that clearly displays the amount of power remaining and monitors charging progress.
Note: * To use this battery pack with the Canon 580EX II flash, you will have to disable Flash Custom Function #01 on the flash.