D.C. Systems comprising of Battery and Battery Chargers upto 500KW Float & boost or float cum boost, constant voltage & constant current, thyristor controlled, upto 500 kW rating, suitable for lead acid, SMF, or Ni-Cd batteries ranging from 20 AH to 5000 AH and 12 V to 220 V or any custom made range. Resistive Load Banks for Battery Discharging Rectifiers (500