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Alex (FTS) Jedi Guardian
Joined: 06 Feb 2006 Posts: 993 Location: Falmouth, Cornwall
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Posted: Wed Nov 29, 2006 5:37 pm Post subject: Split charge System |
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This is a home made split charge system I found on the internet-Sorry to the guy that designed it as I cant remember were I found it or the guys name.
This system is designed to charge both batteries at the same time. If one of the batteries is full then it will concentrate its charge on the other. This system works really well for people like my self that have a lot of thing in regular use off of their leisure battery. i.e big sound system and air compressor.
Hope this is of use to any one-all the bits you need cost about £5 from maplins. _________________ www.faltownskateboards.com |
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ElusiveStranger Darth Admin
Joined: 23 May 2006 Posts: 2527 Location: Mudway, Kent
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Posted: Wed Nov 29, 2006 10:58 pm Post subject: |
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Dunno why you've got a diode there . Current's gonna flow through the coil between 85 & 86 anyway. _________________ The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.
'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more
Bugger, missed out on "Live fast, die young" |
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Alex (FTS) Jedi Guardian
Joined: 06 Feb 2006 Posts: 993 Location: Falmouth, Cornwall
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Posted: Thu Nov 30, 2006 12:26 pm Post subject: |
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It is because when the contacts open you get a back e.m.f. (electro motive force (Voltage) and the diode stops that voltage getting back to the alternator.
I'll find the link to the guys sight as he goes into it in more detail _________________ www.faltownskateboards.com |
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Alex (FTS) Jedi Guardian
Joined: 06 Feb 2006 Posts: 993 Location: Falmouth, Cornwall
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pepper Jedi Knight
Joined: 22 May 2006 Posts: 245
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Posted: Fri Jun 13, 2008 10:17 pm Post subject: |
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Split charging relays like this are what we have in our works vehicles and actually in America (of concern to me as I work for an American Co) this type of split charging system is illegal!
There is a safer way of doing it but I can't find the paperwork for it right now (have drunk too much to go and get the paperwork from my workshop) I will get it out tomorrow and will see if I can either scan it or the guy has a web address! |
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pepper Jedi Knight
Joined: 22 May 2006 Posts: 245
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Posted: Fri Jun 13, 2008 10:22 pm Post subject: |
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Oh and the main reason that won't work very well is because if your Leisure battery is flat, then the Alternator will try and chuck as much power down it as possible (upto 70 amps or more) especially for us guys who have modern alternators on our vehicles!
There are far more modern and safer ways of getting a split charging system into your vans and for not much money either! |
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pepper Jedi Knight
Joined: 22 May 2006 Posts: 245
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sven Jedi Guardian
Joined: 27 Dec 2006 Posts: 814
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Posted: Sat Jun 14, 2008 12:45 am Post subject: |
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The only difference between this kit and the first example in this thread is the size of the relay and fuses. They are connected to the batteries the same way though. |
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wackos00 Padawan
Joined: 05 Feb 2008 Posts: 53
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Posted: Thu Sep 03, 2009 3:49 pm Post subject: |
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does anyone know of a relay with the diode included that doesn't cost loads? |
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wackos00 Padawan
Joined: 05 Feb 2008 Posts: 53
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Posted: Fri Sep 04, 2009 12:07 pm Post subject: |
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eg, does anyone know if this has back emf protection built in? |
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ruby bay Jedi Knight
Joined: 15 May 2008 Posts: 144 Location: WEDNESBURY
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Posted: Sat Sep 05, 2009 7:13 am Post subject: |
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try maplins mate. |
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Dave. Initiate Jedi
Joined: 26 Oct 2010 Posts: 28
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