Low chassis battery on start up

[wwestman]

After being parked for a few days and plugged into shore power, when I start the main engine up I get a low battery alarm, both on the dash and on the leveling system.

Is this to be expected? It goes away after a few minutes and everything is normal after that. I would have thought that the inverter/charger would have kept both the house and the start battery fully charged.

2020 Coachmen Sportscoach on Freightliner chassis with 340 Cummins

[phillyg]

Im not familiar with your unit, but my Class A experience was that both house and chassis batteries should be on the charging system. Check with FR to see how it's wired, or perhaps there is a switch you need to set. If you have a multimeter, check the battery bank(s) to see if you have the same charging voltage at house and chassis. While it's unlikely on a new unit, it could be something as simple as a bad ground connection needing tightening.

[FORDGURU]

Originally Posted by wwestman

After being parked for a few days and plugged into shore power, when I start the main engine up I get a low battery alarm, both on the dash and on the leveling system.

Is this to be expected? It goes away after a few minutes and everything is normal after that. I would have thought that the inverter/charger would have kept both the house and the start battery fully charged.

2020 Coachmen Sportscoach on Freightliner chassis with 340 Cummins

It’s normal on all fccc chassis, batt lights will stay illuminated until it sees 13.2 constant