Starter battery charger question

[Abevan1984]

Hi all,

hoping someone in the know could help me here.

I have a leisure battery under my drivers seat that has power cables coming from the starter battery running through a Victron b2b charger for charging whilst I driving.

I also have electric hook up with the mains going to a consumer unit and out to a 3 output Victron charger to charge the leisure battery whilst on shore power.

My question: do you think it would be possible me to use the mains charger spare output to charge the starter battery using the same cables that the b2b charger uses? That way i dont need to run new cables saving me the hassle of taking up the seats, carpet etc ..

If so, how can this be achieved?

Would I need some form of switch or automatic crossover device?

thanks

 

[Dellmassive]

shouldnt be a problem.

can you post some pics of the kit & install. . . ? (pics say a 1000 words etc)

are the batteries the same chemistry? ( ie starter and leisure both SLA/AGM? )

whatr victron b2b - orion?


...


you say "Spare output" from the EHU charger . . . what are the other two outputs going to?

 

[Abevan1984]

Thanks @Dellmassive

When I say I have, what I mean is, I have in boxes ready to install. I have a plan drawn up which is, creative.

B2B is Victron Orion -rt smart 12/12 -18
Mains charge is Victron blue Smart ip22 12/12 - 20 3 output. 1 output is going to the leisure battery to charge when on EHU, so 2 spare outputs.

Was wondering if as shown by the dotted line, I could use a spare output from the mains charger to pick up the existing cables to “reverse charge” the starter battery when on EHU

But I wasn’t sure what effect this would have on the B2B charger and whether I’d need some form of switch or preferably auto switch ..

hope I’m making sense

 

[Abevan1984]

Basically, I have had the seats out, dash out, carpet up and sound deadened the cab floor, put the cabling down as per the diagram. Then saw your post after I put it all back together and thought oooh i could charge my starter battery too ... but don’t want to take it all up to run more cables back to the battery!

 

[Abevan1984]

@Dellmassive did my diagram make any sense

 

[Dellmassive]

yes . . . have a look over here at some schematics:

just remember to fuse and cable everything properly.

Diagrams, Schematics & Wires -- How I Done It --

Diagrams, Schematics & Wires -- How I Done It -- ************************************************** Dellmassive`s -- "how I Done It" -- Thread ************************************************** Kit List And Stuff -- How I Done It & What I Use --...

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eg: