Thor Forums

[deadeye916]

2018 Windsport 35M and for the life of me I can't figure out:

1. Why the chassis battery goes dead while drycamping

2. Why the auto-gen start appears to be engaging when the chassis battery is below 11VDC (see #1)

My specific rig does not have a BIRD relay.

If I leave the rig in storage with the salesman switch turned off, when I return a few days later all my batteries will be dead. I have to jump the chassis battery, then use the EMERGENCY switch to get the generator started.

I am fairly confident the chassis battery is shot...driving back from AZ recently the inverter was throwing an error out and shutting down and reporting 10.x volts from what ever source it was monitoring. I assumed it was the chassis battery. When driving I would have thought the alternator would provide enough juice to both sets of batteries to keep the inverter working for our residential fridge.

I've been thinking the chassis battery is shot because I've had to jump start the rig 2 times. I put a knife switch on the chassis battery so I can disconnect it while in storage but wondering if I need to add one to the house batteries as well. Any thoughts?