Slides on house batteries

[JLUSoCal]

Originally Posted by creativepart

JLUSoCal, if you have your RV setup to charge the LiFePO4 batteries from the alternator then any time you turn the key to run you are connecting the house and chassis battery banks. (Note, if the chassis battery was dead this would not have the same effect - in case you're wondering.)

Many of us have removed the battery isolation manager so that the alternator doesn't charge the house batteries. So, that depends on your setup.

I hear you - I have an amp meter and work to ensure my batteries are close to 90% charged before I start up for the day (so far, I've been able to w/ Solar), so I don't stress out my alternator, and I don't see more then 40amps heading to the battery - I'm wondering the length and gauge of wire is restricting the "input" of amps. I've been keeping my eye on this to see if it's an option, and maybe I'll get a deal when I have to buy my alternator https://www.amazon.com/dp/B07DY8S815?



I also wonder if that isolator charges while parked from the solar back to the battery - but enough off topic, agree I'm gambling a bit.

[creativepart]

Originally Posted by JLUSoCal

I also wonder if that isolator charges while parked from the solar back to the battery

Unless you did something different than normal installation the solar charge controller is wired directly to your house battery bank and has zero to do with the BIM. When the sun shines the batteries are charged - unless they are already charged up. Because if they are your solar controller is smart enough to limit charging to those batteries.

[JimStreit]

In my setup, the house and engine batteries only work together when the boost button is pushed.

[creativepart]

Originally Posted by JimStreit

In my setup, the house and engine batteries only work together when the boost button is pushed.

I may have "assumed" too much. I know when driving with my BIM equipped motorhome that there is an ignition trigger that connects the chassis and house batteries for charging via the alternator while driving. And that turning the ignition to RUN makes that connection take place. But I'm assuming that also combines the two battery banks like the momentary switch on the dash does and I do not know that to be a fact.

I need to be more careful with my assumptions.