... on bypass mode is optional)BatteryBattery typeVRLA (Valve Regulated Lead Acid) not includedDC Voltage380VdcRecharge time4 hours up ... breaker; DC Fuse, Fan, redundant power supply; temperature sensor, EPO (Emergency Power Off), audible alarmsSoftware ProtectionsDischarging batteries, Battery ... voltage, DC fuse open, %v power supply fail, 13.5 v power supply fail, inverter overvoltage, 200% overload on ...