The Power Supply Unit (PSU) can charge up to six target units’ internal batteries simultaneously or provide sufficient power to operate the target systems.  The PSU is housed in a durable water resistant steel housing with a lourved side panel for ventilation and integrated cooling fan. The PSU includes a mains power isolation switch and individual connectors for up to six charging positions.   The PSU has been designed to provide the individual targets  with a charge maintenance system for their internal lead acid batteries.  The PSU works with an input voltage of 230V AC (50Hz) and provides outputs in 13.8V DC.