We have a 2016 Discovery 37R. When on shore power, my chassis (starting batteries) are not charging. When the engine is running or the generator is running, the chassis batteries are charged.
I have replaced all 6 coach batteries (2 were bad) and both chassis batteries. Fleetwood advised that the coach batteries charge first and then the charging rolls over to the chassis batteries. If there are any bad coach batteries, then the chassis batteries will not be charged as all the charging capacity is directed to the coach batteries.
have checked the fuses in the Battery Control Center (BCC) as directed by the Fleetwood Tech. Fleetwood Techs are stumped. I have talked to RV Custom. the manufacturer of the BCC and he feels the issue is in the solenoid system.
I have checked the 2 solenoids in the battery box and the 200 and 150 amp fuses, all appear good. However, I have apparently missed something.
Currently I have a trickle charger on the chassis batteries.
Any suggestions?