Abstract: The present invention is a ground power unit for aircraft. The ground power unit includes a battery and a standardized aircraft ground power connector. The ground power unit also comprises a means for recharging the battery of the ground power unit. In some embodiments of the invention, the means for recharging the battery may also be adapted to provide power to an aircraft electrical system to which the ground power unit is connected.

Abstract: Methods and apparatus for a portable ground power source for starting aircraft. An apparatus includes a Li-ion battery pack and a NATO connector integrated into a single unit and packaged inside a light weight plastic housing.

Abstract: A method and apparatus for providing portable ground power for aircraft. A ground power unit includes a lithium ion cell battery assembly and a standard three-pin aircraft ground power connector integrated into a single unit and packaged inside a ruggedized plastic housing with a carry handle, thereby eliminating the heavy and bulky power cables between the battery and connector. A battery management unit sets charge/discharge limits and provides monitoring of state of charge, health, and function. A charging connector and charging circuitry with user-selectable regulated charging limits allows simultaneous charging and discharging operations and connection into aircraft auxiliary circuits. A ganging station is provided to electrically combine the outputs of several ground power units in parallel for starting larger aircraft.