Question BIM in 2022 LADP?

[Ddmo]

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.

 

[redbaron]

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

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.

 

[Kevin D Pem]

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

Why are you concerned about a boost feature?

 

[Richpatty]

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

 

[Kevin D Pem]

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

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!

 

[redbaron]

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!

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.

 

[Neal]

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.

This?

https://www.victronenergy.com/dc-dc-converters/orion-xs-12-12-50a-dc-dc-battery-charger

Sure looks interesting.

 

[Rd1]

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

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

Maybe switching to Lithium House Batteries - iRV2 Forums

I'm sure thhe info I am looking for has already been addressed in this great form, but I can't find it so: I have a 2018 New Aire and the AGM house batteries need replacing. Am considering going

www.irv2.com

 

[Joe Hogan]

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.

 

[Kevin D Pem]

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.

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!!!