New lithium battery -> how to tell if Victron will sense it or is there a switch

[AllForTheDogs]

Hi all,
I have a new 2026 Avenue 35 RKS and I bought a lithium battery for it. I've received conflicting answers regarding if I need to manually switch something or if the Victron charger controller will recognize it.

I'm hoping someone here will have a definite answer or tell me where to look.

Thanks!

 

[Ox262]

My Victron has to be manually switched to Li. Either via the app or the tiny rotary switch on the charge controller. I used the app.

As a side note, my first Victron controller was defective. I contacted Victron directly (not the dealer, and not Alliance) and they sent me a new one within a week. Great customer service.

 

[Oregon_Camper]

You'll need to change both the Victron Solar controller as well as your converter to a lithium profile.

 

[AllForTheDogs]

You'll need to change both the Victron Solar controller as well as your converter to a lithium profile.

You wouldn't happen to know where I look for the converter? Near the fuse box or in the pass through? What does it look like?

 

[Ox262]

My 2026 Delta's converter is auto-switching, there's a sticker on the box say that. Here's a photo of my converter box...Auto-Detect is shown near the fan. And in my Delta, the converter box is buried deep in a cabinet. I had to remove the breaker panel to access it.

 

[Oregon_Camper]

You wouldn't happen to know where I look for the converter? Near the fuse box or in the pass through? What does it look like?

There are two types. External ones, like Ox262 showed above and some are integrated into the breaker panel area. Run your batteries down some...and then plug in your RV. Now listen for a slight humming noise...that will be the converter

 

[Ox262]

And in my previous TT, I ran the battery down to about 50-60% and let the converter charge it back up to "prod" the converter to auto-detect. But that was a built in converter and the internal charge light would switch from green (Flooded, AGM) to blue (Lithium). I don't know how my Alliance converter makes that change or how to verify it switched to Lithium. But I used the same process, starting with a 50% charge on my Lithium and let the converter bring it back to 100%.