Ambush

UPDATE; I completed a hard restart of the inverter. Magnum energy control panel shows Bulk Charging DC 8.9V. Then about every minute it shows AC Overload Fault and then clears and goes back to Bulk Charging DC 8.9V. In addition, what appears to be the emergency flashers (even though they are not turned on) are cycling on and off along with the red light on the top of the dash board blinking. THOUGHTS? AGAIN MUCH APPRECIATION FOR ALL OF YOUR HELP!!!!!!!!!

A HUGE THANK YOU to all of you who responded. I plan to find time this week to try some of your suggestions. I will let you know!! THANKS AGAIN!!!

Yes, verifed battery connections with prior pictures. Yes, verified Big Boy relay correctly with prior pictures. Yes, have put an external battery charger on as of this morning. THANKS,

It was parked, plugged in to shore power 50 amp. Went to start it, run everything, and the batteries were dead. Replaced all batteries (6) as they were 3.5 years old. Since then, 2 months have passed. Batteries are dead. Replaced the big boy relay. I reset the converter / inverter but it trips out after several hours. I have an error code on the magnum energy "internal fault - 1". Im in Jacksonville Florida. Is there a great mobile electrical mechanic? Suggestions please!