Split charge relay question

[smartie1984]

Hi all,
Been lurking about but have decided to ask a question/opinion.
We are converting our transit into a camper and was wondering if a 30AMP split charge relay would suffice to charge the battery when on the move? haven't got the battery yet, but thinking of 110Ah
It has 2 switched outputs and a permanent output. (also 2 inputs so I can run two thinner wires rather than one thick wire)
I would connect the battery to the switched output so it would only charge when volatage is high enough.

Thanks

[KH_Towbars]

WELCOME TO THE FORUM

Yes 30 amp would be fine,

We use them for the aux charging system for caravans when we fit the towbar, it has 2 switched outputs, 1 for fridge & 1 for battery charging just make sure you earth the relay to the chassis or body

[smartie1984]

Hi,
thanks for your reply.
So I think I've sorted out how to wire it up.
As the starter battery is pretty full up with leads I thought I could connect to start motor...would this work?




thanks

[Hydraulic Bloke]

Hi, if you go on flea bay there are a number of auto battery isolaters, got one for mine and is perfect for job, ( I run a couple of 12v motors in the back during work) even has a switch to connect 2nd batt'y in to start engine when 1st is flat

[MinorMatt]

That works, but you have missed the input to the relay for switching it!

[smartie1984]

Hi,
Thanks for the replies.

That works, but you have missed the input to the relay for switching it!

It's a self switching relay, so I thought that means it will switch to charge battery/turn on fridge when voltage is high enough?
This is what it looks like IIRC


THANKS

[KH_Towbars]

That would be ok but you don't have to go to the extreme of wiring to starter for 30amp draw, a spare terminal in the fuse box should be fine

[ake]

I would advise against making your connection at the starter, either go to the battery directly, or spur from the fuse box