Do I need a B2B or can alternator cope?

[Lenny HB]

It was a proper job worked fine and saved me 500.

A split charge relay to charge a Lithium is not a proper job it's a bodge..
I shall give give up now.

 

[Cliff Bryant]

It wasn't s smart alternator if you read it!

My comments were generic and not aimed at your specific set up. Other readers may well have smart alternators (my Adria does).
The OP asked whether he should use a B2B for a lithium installation. I (and others) have given good sound engineering reasons as to why a B2B is preferred.
You didnt answer my usage case questions.
I'll let the OP decide what they think is best for them.

 

[Cliff Bryant]

A split charge relay to charge a Lithium is not a proper job it's a bodge..
I shall give give up now.

It's potentially dangerous as well.
Likewise I've said enough.

 

[OldAgeTravellers]

It was a proper job worked fine and saved me 500.

I am pleased that you are happy with the job and that you saved £500.
I wouldn’t have been happy with it and would not advise anybody to follow your example as I don’t think it is safe even if it does appear (to you) to work.
But It’s a long thread and I may have missed it but it would be helpful for others if you could publish the name of your installer so others can either avoid them or specifically use them as they obviously have much greater knowledge than other specialists in the field.
I am extremely pleased with the performance of my Victron XS and feel the £250 plus a few pennies worth of extra cable well worth it. I had to buy a pack of fuses anyway. I get a solid 50Amp charge into my two lithium batteries through adequate cables, so if I have had a few days stationary with little charge they are charged when I get to my next stop.

 

[MichaelT]

I am pleased that you are happy with the job and that you saved £500.
I wouldn’t have been happy with it and would not advise anybody to follow your example as I don’t think it is safe even if it does appear (to you) to work.
But It’s a long thread and I may have missed it but it would be helpful for others if you could publish the name of your installer so others can either avoid them or specifically use them as they obviously have much greater knowledge than other specialists in the field.
I am extremely pleased with the performance of my Victron XS and feel the £250 plus a few pennies worth of extra cable well worth it. I had to buy a pack of fuses anyway. I get a solid 50Amp charge into my two lithium batteries through adequate cables, so if I have had a few days stationary with little charge they are charged when I get to my next stop.

Same here

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[EuroTrotters]

You need a B2B

I have this, brilliant

You can get 10% off with MHFun discount and they can fit for you if you prefer

Victron Energy Orion XS 12/12-50A DC-DC Battery Charger — Offgrid Power Solutions

This product is in stock at our UK warehouse and will ship next working day. Engineered from the ground up, the Orion XS redefines adaptive DC-DC charging. For use in dual battery systems charged with an (intelligent) alternator. This device not only ensures top-tier performance but also guarante

offgridpower.solutions

 

[MichaelT]

. I (and others) have given good sound engineering reasons as to why a B2B is preferred.

Preferred but not essential? as I said it's not optimum but it works if you have the right setup.

 

[MichaelT]

I have this, brilliant

You can get 10% off with MHFun discount and they can fit for you if you prefer

Victron Energy Orion XS 12/12-50A DC-DC Battery Charger — Offgrid Power Solutions

This product is in stock at our UK warehouse and will ship next working day. Engineered from the ground up, the Orion XS redefines adaptive DC-DC charging. For use in dual battery systems charged with an (intelligent) alternator. This device not only ensures top-tier performance but also guarante

offgridpower.solutions

So do i