OFF GRID BATTERY CHARGING GENSET FOR SALE, 7.5 KW PROPANE AT 48 VDC, THIS WILL KEEP A BATTERY BANK FULLY CHARGED WITHOUT SOLAR OR GRID POWER.  A PERFECT BACKUP SYSTEM OR CAN BE A COMPLETE OFF GRID POWER SYSTEM.  THESE ARE AUTO START WHEN BATTERIES ARE LOW AND SHUTS OFF WHEN CHARGED.  CAN BE NETWORKED.  $699EACH FIRM