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 6.25V from leisure battery?

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BFG
Not so new now
Not so new now


Number of posts : 24
Home City : West Midlands, UK
Model and year : 1994 HiAce Reimo conversion, 2.8 auto.
Registration date : 2012-06-21

PostSubject: 6.25V from leisure battery?   Thu Jul 19, 2012 8:59 am

Hi all - new to the forum (and campervanning!)

We've just got hold of a 1994 Reimo conversion, with the 3L 2.8 engine.

So, problem is a follows.

With the engine running, the interior lights work. With the engine off, they don't.

I put a multimeter across the leisure battery and got a reading of 6.25 volts. This makes me think that the battery is shot, i.e. half the cells are dead.

Am I mis-diagnosing this? Is the battery safe to charge, or am I taking a risk in doing so? I don't want anything to go bang, as the other half is going away in it tomorrow.

Any help greatly appreciated.

Cheers,

Rob
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WGWarburton
Been here a while
Been here a while


Number of posts : 191
Home City : Central Scotland
Model and year : 94 2.8 Noppo HiTop Super-Long
Registration date : 2012-02-07

PostSubject: Re: 6.25V from leisure battery?   Thu Jul 19, 2012 9:16 am

Hi,
It might be worth trying to charge it out of the van- it's possible that the charging circuit isn't delivering the goods and so the battery has just drained. Alternatively, put an ammeter inline with the battery- with the engine running you ought to see current flowing into it and with the engine off, current flowing out but the most likely scenario is that the battery is shot.

Cheers,
W.
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Clive
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Number of posts : 1094
Home City : Bristol UK
Model and year : 2003 Range Rover 4.4 goes like a rocket and drinks like Oliver Reed!
Registration date : 2008-11-05

PostSubject: Re: 6.25V from leisure battery?   Thu Jul 19, 2012 11:06 am

Try a slow off vehicle charge, but I think the battery is dead.

A dead car battery will show 11v, not sure if the same rule applies to leisure ones?
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BFG
Not so new now
Not so new now


Number of posts : 24
Home City : West Midlands, UK
Model and year : 1994 HiAce Reimo conversion, 2.8 auto.
Registration date : 2012-06-21

PostSubject: Re: 6.25V from leisure battery?   Thu Jul 19, 2012 11:17 am

Cheers all - I think a new battery is in order.

Hopefully we can source one today, so we can get away tomorrow.

Regards,

Rob
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BFG
Not so new now
Not so new now


Number of posts : 24
Home City : West Midlands, UK
Model and year : 1994 HiAce Reimo conversion, 2.8 auto.
Registration date : 2012-06-21

PostSubject: Re: 6.25V from leisure battery?   Thu Jul 19, 2012 9:33 pm

New battery fitted - old one was very dead indeed.

Chap who fitted it (Rock Batteries in Cradley Heath - very good) checked the charging system for us, tightened up lots of loose connections, and then his testing machine came up with "Bad Diode". He re-did the tests, and got the same result. Apparently, the diodes on the alternator are no good and will need checking.

Anyone know whether this is a small thing, or a new alternator?

Cheers,

Rob
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WGWarburton
Been here a while
Been here a while


Number of posts : 191
Home City : Central Scotland
Model and year : 94 2.8 Noppo HiTop Super-Long
Registration date : 2012-02-07

PostSubject: Re: 6.25V from leisure battery?   Thu Jul 19, 2012 11:34 pm

Hi,
I don't know how hard it is to get the alternator out but it should be possible to get the diodes replaced by an automotive electrician or specialist alternator place unless they are sealed inside the unit or something wierd....

Cheers,
W.
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