Question - BIM in 2022 LADP? (2024)

I have a Freightliner with 240 amp alternator. I think you can go higher than 30 amp no problem stressing alternator. I’ve seen others install 2 of the 30 amp model in parallel for 60 amp total.

But, look at the new Victron Orion 12/12 50 dc dc charger. A new product released recently that is much more efficient than the older models. I’m thinking of adding this to my setup when I change over to Lithium this summer.

Richpatty said:

I Iike the idea of a DC to DC charger but it eliminates the Boost feature….

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Is this because the flow is reversed, and the dc to dc acts like a diode? If so, a 2nd unit running in reverse should allow it to function.

Richpatty said:

I Iike the idea of a DC to DC charger but it eliminates the Boost feature….

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Why are you concerned about a boost feature?

Richpatty said:

There is a Boost button on the dash that temporarily links both battery banks in case you need to get more juice when starting….

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WOW! That can be a major problem!

Personally, I would eliminate that from the get go. Paralleling dissimilar battery technology is a really bad idea, especially when lithium is one of the technologies!

Kevin D Pem said:

WOW! That can be a major problem!

Personally, I would eliminate that from the get go. Paralleling dissimilar battery technology is a really bad idea, especially when lithium is one of the technologies!

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It’s only done when one set is dead and you need to get power from the other.

Ie: dead chassis and you need to start coach or generator to charge.

I will use a dc to dc charger to retain the boost feature, and that eliminates any concern over different battery types.

Ddmo said:

I have a Freightliner with 240 amp alternator. I think you can go higher than 30 amp no problem stressing alternator. I’ve seen others install 2 of the 30 amp model in parallel for 60 amp total.

But, look at the new Victron Orion 12/12 50 dc dc charger. A new product released recently that is much more efficient than the older models. I’m thinking of adding this to my setup when I change over to Lithium this summer.

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This?

Sure looks interesting.

redbaron said:

I am in the process of replacing batteries in my coach with Lithium, but need to resolve the circuit protection for the alternator.

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fwiw, this discussion might interest you, re dc to dc nor special BIM

Silverleaf system uses programming and a solenoid for BIM function on the 2024 DSDP with the Lion option. Had to replace the original one with a new one under warranty within the first month.
Luckily , the Silverleaf engineer was around so he checked that I had the most recent program installed. There is an update that is fairly recent.

redbaron said:

It’s only done when one set is dead and you need to get power from the other.

Ie: dead chassis and you need to start coach or generator to charge.

I will use a dc to dc charger to retain the boost feature, and that eliminates any concern over different battery types.

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Well, not really! It's said a lithium battery acts much the same way a capacitor reacts! It will completely discharge very fast!

I could see modifying the relay system to switch the starting system from one battery to the other. But to introduce a short circuit to a lithium battery is pure suicide!!! Thank God your lithium battery has short circuit protection!!!