In addition to that I'd have your batteries tested. That low voltage can be caused by the isolator kicking in and out and you have that inverter sucking major amps when the fridge is fridging.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times