For a portable power source for your speedlights, use the Turbo 3 Rechargeable Battery (US / Canada / Japan Plug) from Quantum Instruments. This battery works with most shoe-mount and handle-mount flashes, including 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 speedlights and 750 flashes for handle-mount units. The product offers two outlets so you can simultaneously power a digital camera and a flash, or two flashes. Cables are secured to the battery via locking sockets so you don’t have to worry about a cable falling out while you are in the middle of shooting. Compatible cables for Nikon, Canon, and Qflash Trio are available and sold separately. The Turbo 3 is equipped with four LED status indicators for checking how much power you have left. Recycling times vary from 1 to 1.9 seconds, and it takes about three hours to fully charge the unit with the included battery charger. The product weighs only 2 lb and can be carried around easily with the included belt clip. Features NiMH batteries used for quick recycling Non-included locking flash cables for Nikon, Canon, and Qflash TRIO can be secured with the locking sockets of the Turbo 3 Comes with a belt clip, and has fittings for an optional shoulder strap Two outlets for simultaneously powering a digital camera and a flash, or two flashes The internal battery can be replaced by Quantum Instruments at a nominal cost if desired To check the Turbo 3 capacity when it is not connected, press the ON button until the LED display comes on. The gauge will automatically turn off after use Full-Power Flashes Shoe mount: 1050 Handle mount: 750 Qflash: 600 Trio: 1050 Never miss a shot again because of a slow or dead AA Cut recycle times in 1/2 Works with many brands of flashes Up to 4x more full power pops over typical AA batteries Two (A-B) ports for two flash power or power one flash and one camera at the same time. (Select camera models)