... .Expandable backup time10.Generator compatible11.Cold start12.Load/Battery power meter display13.Overload, on-line, battery status LED/LCD14.Advanced Battery ... lead acid, maintenance free DC Voltage48VDC96VDC192VDC Charge current6A6A6A6A6A6A6A6A6A Panel indication LCDInput,oupt,battery voltage,frequency,load rate,UPS state, temperature LEDMain input ...