Simply plug the DC cord which comes with the LiteTrek 4.0 into Outlet A on the Mini LT's top panel (Outlet B is for other brands). The panel features a "fuel gauge" indicator to display available power. The LiteTrek 4.0 will give you an impressive 650 full power flashes or 3,500 1/64th power flashes on a single 4-hour charge. Recycling times are from 1.0 - 3.5 seconds. Unlike other battery systems, the Mini LT's battery separates from the power module with a simple "push and slide" action which is reminiscent of a camera quick release. You can pack additional batteries alone without the extra weight of a second or third full battery system. Besides reducing the weight this also reduces the cost; the battery alone is less than ½ the price of the complete system.
The Battery pack set comes with separate power module, battery pack, multi-voltage charger, a dedicated cable for Canon 600EX-RT, 580EX II, 580EX, 550EX, MR-14EX, and MT-24EX flashes plus a case with a shoulder strap.