Battery being drained? (1 Viewer)

[Lindylooj]

Hi all, this is Mr Threecats here

We had a new main battery fitted two weeks ago, went to Chester and have just had to call the RAC out again! The engineer reckons it is the relay switch between the leisure battery and the main that is draining the system, is this something that I need to take to a motorhome garage dealer or can a normal garage fix

 

[acting_strange]

You should be able to change the relay yourself....you just need the right type and position...

 

[Gorsecover59]

Any auto electrician should be able to deal with this.
Or even most competent electricians if you are unable to change yourself.

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[Gorsecover59]

Your van looks of a similar age and type to mine.
I have a swift lifestyle (sundance) 530l.

Were both the Leisure and the Cab battery flat?
Did this happen off hook up while camping?
Did you monitor the state of your batterys?

I ask these questions as if the relay to the engine battery did not "drop out" when ignition switched off you have effectively linked both batteries together.So if that were the case you used the power available from both batteries,assuming there was no leakage to earth.
Next question how do you monitor battery condition?As you effectively used twice as much power as you should have done.
I wonder if the problem may have highlighted an issue to do with battery usage and consumption as well as a relay issue.

On my van which is on a 2002 Ducato base the relays are under the bonnet staring at you as you lift the bonnet.Under a plastic cover.Several relays and 3 fuses. Fuses are for Fridge on 12v supply.............alternator to Leisure Battery and alternator to Cab battery.The theory is that when you switch on ignition and start engine relay is energised allowing charge to both batteries.When you switch off engine relay opens to stop batteries being
linked and discharging both.

Hope these babblings from the padded cell help.
Martin