This is a high voltage battery that works with most shoe- and handle-mount professional quality flash units and all Quantum Qflash, T-series and Trio/Pilot portable flashes. The Turbo 3 has the capacity to provide 1050 full-power flashes for shoe-mount and 750 flashes for handle-mount flash units.
The Turbo 3 has two outlets so you can simultaneously power a digital camera and a flash or two flashes. Caution: If you fire a full discharge every second or so with a flash that has no cooling, the flash will overheat and potentially cause permanent damage to the flash unit
This NiMH battery is equipped with four "fuel gauge" LED status indicators which keep you aware of how much power you have left. Recycling times average one second and it takes about three hours to fully charge the unit with the included standard battery charger.
Compatible cables for Nikon and Canon flashes can be rented separately.
Manual can be found HERE