The QTB delivers 330 volts directly to the flash unit's capacitor bypassing the slower recycling circuitry. One second recycling for full power manual GN 110 flashes. 350 full power shots per charge, 450 in "economy" mode with 2 second recycling time, up to 1000 or more flashes when flash is used in automatic or TTL modes.
4 LED's for 25, 50, 75 and 100% remaining capacity levels, low power red warning light at 25% capacity, and a charging indicator that gives the status while charging.
Lockable sliding on/off switch. Custom designed Turbo cables connect to many shoe and handle mount flashes. Optional Accessory cable QT48 is a Dual Connector designed for powering two flash units from one QTB. The QTB can be used with the Vivitar 283 and 285HV, the Olympus T32, T45, the Hasselblad 4504, the Canon 430EZ, the Nikon SB11 and SB24/25, the Metz 45CT and CL series, the Sunpak 611/622 flash units, among many others and is also designed to be the main power source for the Quantum Qflash model T. Dimensions: 6.75x4x1.75 in.
Weight: 39 oz. Other Accessories include: Replacement Charger (QT40), European Charger 220/240VAC (QT41), Australia/New Zealand Charger 240VAC (QT43), European/Scandinavian Charger 220/240 VAC (QT42), United Kingdom Charger 240 VAC (QT45), Vehicle Charger (QT46), Fast Charger USA/Canada only (QT47), Extension Cord (QT49) and ES1 and ES2 Energy Savers.