No Power to Coach or Chassis

[HASKONI62]

We have a 2020 Coachmen Sportscoach. We store it between trips. Last trip was the first week of December. Went out to start it(we do this every 3-4 weeks when stored) and had no power to the coach or chassis. The batteries, coach and chassis, are 2 years old. Called Coachmen Tech Support. They were as lost as I. Any idea what would cause this? Just looking for a starting point on what to check. I will test the batteries when I go back tomorrow but very doubtful all the batteries died at the same time!

 

[Underboss]

Was it plugged in?

 

[John&Andrea]

If not plugged in. The battery should be disconnected, either the cable or disconnect switch.
If in cold winter climate, removing the batteries and place in a warm area can help.

 

[HASKONI62]

Was it plugged in?

No. It is stored on Charleston AFB. No hook ups. We have had a few nights in the high 20's but not extended cold. It was 75 today.

 

[HASKONI62]

If not plugged in. The battery should be disconnected, either the cable or disconnect switch.
If in cold winter climate, removing the batteries and place in a warm area can help.

We turn off the coach and chassis disconnects. We also turn off the breakers to all the appliances. We are in Charleston SC, so no extended freezing perods.