Fault Codes/Gillette Generators/BATTERY FAULTGillette GeneratorsBATTERY FAULTUnclassifiedElectricalWhat This Code MeansBattery fault alarm LED active; Form C contact triggeredPossible Causes•Battery disconnected•Battery polarity reversed•Mismatched charger battery voltage•Open charger to battery connection•High resistance charger to battery connection•Open battery cell•Excessive internal battery resistanceRelated Gillette Generators Fault CodesBATTERY FAULT ALARME1FLASHING REDFLASHING RED AND GREENFLASHING RED AND GREEN LIGHTSFLASHING RED LIGHTNFPA 110 ALARMSOVER & UNDER VOLTAGERED LIGHTCABrowse all Gillette Generators fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for BATTERY FAULT on your specific Gillette Generators unit — cited to the OEM manual, not a forum guess.TRY IT FREE