goreds2 wrote:
I have the 1989 Dodge Explorer Class B. When plugged in, does the motor battery charge just as the cabin battery does?
It's unlikely.
Most RVs do not charge the engine battery from the cabin battery charging system, only from the engine while running.
Also you should be aware that most older RVs charge the cabin battery at a fixed amp and voltage. My RV is a 1979 and it charges at 13.6 v and 3 amps which boils the batter dry in several days. I put a disconnect switch in so I can leave the RV plugged in and not charge it from the converter. I have battery maintainers (not trickle charges) for both the engine and cabin batteries. These can be left on indefinitely.
You can test whether your engine battery is getting charged by using a volt meter to check the voltage at the engine battery while the RV is on shore power. If the voltage is over 13v then it is getting charged. You can confirm by removing the shore power and the voltage should drop.
