Split charge system

[pi quattro]

My fault, I was assuming you meant a full Zig panel when you had stated "charger"

Relay, 14 V in and 13.7 out = not right

Split charge relays = Here and Here and Non auto type here(that one would be my choice) and Same here etc

Ghost - Much appreciated!

I prefer to walk into places and pick up what I can (lots of motor factors near my office) I will try to ask for this then "4 Pin Split charge Relay with at least 60 amps" Quite sure the relay on there just now has "16A" stamped on it!

[ghost123uk]

OK - Oh, 16 Amps = No where near enough, no wonder it's contacts are not conducting correctly.

If you drive with your fridge on 12 volts, look for a relay that has a fridge output connector as well Most split charge relays have this.

[ghost123uk]

As per that first "Non automatic type" I listed, it says = "LUCAS SPLIT CHARGE RELAY 12v 60amp TYPE 33RA - 5 terminal type - Pt.no.SRB630 This version of the 33RA has a 5th auxiliary terminal used to isolate a caravan or camper electric fridge from the battery, after the vehicle engine has stopped".

[pi quattro]

As per that first "Non automatic type" I listed, it says = "LUCAS SPLIT CHARGE RELAY 12v 60amp TYPE 33RA - 5 terminal type - Pt.no.SRB630 This version of the 33RA has a 5th auxiliary terminal used to isolate a caravan or camper electric fridge from the battery, after the vehicle engine has stopped".

Done my homework and managed to source a "durite" one that has 5 pins described as 70/20 amps for £20 +vat local to me. Just occurred to me that the one on the van must be quite old as it has a old euro style fuse on the top.

My fridge already switches off when the ignition isn't on, so maybe no need to change that. (there is a switch on the fridge and another fused switch on the control panel for the fridge-both have to be on and the ignition on for the fridge to operate)

Many thanks again!

[pi quattro]

Hi

Ok fitted one of these -

http://www.ebay.co.uk/itm/0-727-23-DURI ... 4ac50682f2" onclick="window.open(this.href);return false;

Also fitted an earth strap on leisure battery and cleaned up connections, replacing all the ones connecting to the new relay.

Went for a good run today and there is still a difference between both batteries, maybe not as big a difference. Thought that it was much more steady and didn't jump about much. During the run the leisure battery stayed about 13.7v and the main battery stuck at 14.2v

When the fridge was switched on, the leisure battery dropped to 13v (still better than before -12.2v)

Now when I start the van, the red battery light on the dash stays on untill I give the accelerator a prod. Quite sure the meter on the starter battery didn't budge when starting or until I gave it a rev. Is it possible I have connected the relay the wrong way round? Could it be one of these relays that only switches at a certain level?

So... Only thing I haven't done is run a wire across both +ve terminals and see what happens? I'll try this with jump leads?

Is it worth mucking about trying to wire the fridge into the relay, if it already is wired correctly?