House battery charging by alternator

wolfe10 wrote:

Lwiddis wrote:
Without extra equipment the alternator won’t do a good job of charging your house batteries. Upgrade your solar system to charge them.

Sorry, I have to disagree.

While solar is a worthwhile upgrade for those who spend time "off the grid", the alternator SHOULD charge both battery banks.

To the OP: You need to troubleshoot your charging system. Do you have a diode-based battery isolator or a solenoid-based battery isolator?

X2 I'm not aware of any MH that doesn't charge both banks from the alternator. Most likely problem is the solenoid as significant amps are involved and DC is prone to pitting the contacts. It could be the connections which should all be clean and making good contact. It could also be the setup that activates the solenoid coil.

I'd be surprised if you have a diode based system.