TheRealMcCoy

New Member
Joined
Apr 14, 2023
Messages
3
Location
Alpharetta
We have a 2019 Thor ACE 30.2. We are upgrading the electricals with Victron Solar, Charger/Inverter, DC-DC charger, and 4 100Ah lithium batteries. It currently has two Pb batteries with a BIM. With the BIM, it has an emergency power feature. We would like to keep this feature. The Pb batteries are not needed for anything so they might as well stay where they are.

Even with a common ground, the power systems are essentially separate. The Pb batteries would be just for chassis emergencies and not connected to the house. The lithium would be for the house and connected through the DC-DC charger. The draw on the alternator shouldn't be excessive with the DC-DC and the BIM (I don't think).

I have attached a PDF file with the proposed layout. Does anyone see a problem with this?

Thank you.
Everett.
 

Attachments

  • Solar_Design5.pdf
    389.5 KB · Views: 153
I am not Victorian certified,. Since your dual lead emergency start batteries are only charged from alternator through the Orion and correctly isolated by Byrd, it should work, but again, I am not a Victron tech.
 
My only question is do you have bi-directional charging for the chassis and coach batteries via the Victron Lynx and Orion Tri-smart?
Looks great!
 
Whats up with 2 lead batteries for emergency start.

Car battery? That your chassis battery?

Why do 12 volt? You can do 48v and put lithium in series

Cheaper and save copper cost more efficient

Victron has new screen/cerbo in one you can have inside rig

Victron has new dc to dc 50 amp thats not an egg cooker.and intergrates withe cerbo ve

Is bim a 225 lithium

That's a pretty diagram,

I have about that system, but did mine over last 3 years before new tech was available
 
The alternator draw will depend on the BIM. They make a Li-Bim but it basically internally switches the alternator charge on and off every 15 minutes in hopes to not fry your alternator but to allow the higher voltage to charge the lithium. If you have a Smart alternator, which I’m guessing it’s not you have the potential to burn it up. The batteries will pull maximum amps from the alternator in 15 minute increments. I got rid of my BIM and went with a Renogy DC to Dc charger that I could adjust and monitor the amount of amps being pulled. I figured if I needed to adjust a battery cable or jump myself I could do it.
 

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