Fault Codes/Rehlko/LOW/WEAK BATTERYRehlkoLOW/WEAK BATTERYUnclassifiedElectricalWhat This Code MeansLow/Weak Battery message displayedPossible Causes•Wireless monitor battery voltage has dropped below 11.5 voltsRelated Rehlko Fault CodesLOWBATTERYLOWBATTERYVOLTAGELOW BACKUP BATTERYLRCLO CRANK VLT WARNINGLVLO CRANK VLTOULBOVERTEMP FAULTHVOVERVOLTAGEL1--L2Browse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for LOW/WEAK BATTERY on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about LOW/WEAK BATTERYGET THE ANSWERFree account required — we'll bring your question with you.