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How to charge second battery off the alternator?
Posted: 14 Jun 2009, 18:30
by snowythebudgie
Hi all,
I'm finally a proud owner of my first T3 and we had or first trip away this weekend in it. I must say I'm very happy with everything, except that the second battery doesn't charge automatically whilst driving. I've heard its fairly easy to get a relay to connect this up to the alternator. Any advice would be greatly appreciated and remember I'm a complete novice at all this
Cheers
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 18:38
by dwayne
seems strange that a leisure battery is fitted without a split charge system , is it under passenger seat ? and are there any other electrics in there ? it could be just a blown fuse in the split charger .
Do a search for split charge , a few threads on this .
Oh and glad you enjoyed the camping

great aint it
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 18:39
by psychonaut
Yo dood, have a boo at this
https://club8090.co.uk/wiki/Ca ... it_charger" onclick="window.open(this.href);return false;
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 18:54
by snowythebudgie
Cheers,
The guy who I bought it off said he charged from the mains using a battery charger. The leasure battery is under the drivers seat and it has 3 fuses off the +ve terminal which all worked so just don't think it was wired up. I also found an unopened relay switch under the passenger seat so guess he always meant to do it. I must say I'm not very confident at all when it comes to electrics so I may just pay to get it done....although I'm very keen to learn....mmm, will look into it a bit more...
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 19:14
by snowythebudgie
Another question, if I put a relay so that both batteries charge during driving, will this affect how quickly the main battery charges? Also, I've noticed that the lighter socket has a green light and doesn't work until you've been driving a while and then it suddenly lights up an can be used. Has anybody seen this? Does it mean that it only works when the alternator has finished charging the main battery (in which case this must be on a relay right?)?
Cheers
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 19:22
by dwayne
so your starting battery is where ?, cause normally starter is under drivers and leisure under the passenger.
understand your apprehension about electrics but it's not that hard and would save you a few bob, the diagram in the wiki link is straight forward enough
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 19:58
by snowythebudgie
The starter battery is next to the engine. Its a 1.6TD 1988. I agree that the diagram looks simple enough if I was wiring it from scratch, but there's already about 6 wires come off the leasure battery and so I need to work out how everything is wired already, which isn't going to be easy for a novice..
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 20:02
by psychonaut
Snowy, fill in your profile so people know where you are in the country dood - there may well be a club member somewhere close to you who can help you wire it in

Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 20:11
by snowythebudgie
Cheers, I'll do that now, but I'm living in the Netherlands for a few years so doubt anybody will be out that way..... If by any small chance there is though, then I'd love a bit of help!
Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 20:15
by psychonaut
80-90 run to the Netherlands??!! I haven't been there since 2001 - i love the Netherlands

Re: How to charge second battery off the alternator?
Posted: 14 Jun 2009, 20:42
by snowythebudgie
Well breakfast's on me for whoever fancies it.... I've been here for 6 months now and I like it a lot. I do miss the hills though........
Re: How to charge second battery off the alternator?
Posted: 15 Jun 2009, 13:40
by gedbedhead
mine charges off 110v hookup? you need to upgrade alternator to heavy duty if you wanna go down that route.