... overload protection Automatic switch and transfer time: AC line to inverter, inverter to AC line, and ten minutes transfer time Compliant ... voltage: 4.5V Current fuse rating: 250V AC, F3.15A, (internal), T10A, (external), 5 x 20mm Type: three stage automatic Charge control: bulk ... 4V, float 13.8V Battery range: 75 to 250Ah Battery type: for charging 12V lead acid batteries only Thermal protect (fan ...