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Old 14 May 2013, 14:56   #21
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I still have this problem, and I now think its batteries, the boat is out the water so I cant crank it over.

But this is what I have.

Battery1 - 12.65V with VHF sending a DSC request drops to 10.05V
Battery2 - 13.17V with VHF sending a DSC request drops to 11.00V
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Old 14 May 2013, 15:13   #22
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Main cable from the battery switch, or the main earth terminals/lead at a guess.

You should be seeing practically no voltage drop.

Wiggle them all about a bit and see if it changes.
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Old 14 May 2013, 15:18   #23
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Hmm, Well will try and workout a way of connecting the VHF direct to the terminals so I can cut all that out - problem is all the routed cables. I wanted to test what the batteries did under load.

When I have been thinking of the fault, I seem to recall it started when the batteries were ran flat.

I assumed it would just be the batteries, as for the test i did it with the switch on battery 1 and then again on 2 - but forgot both - but the switch, earth and fuse box were all common.
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Old 14 May 2013, 16:43   #24
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Check it all out anyway-if you've got one dodgy connection it could be heating up.
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Old 15 May 2013, 08:36   #25
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If I am to replace the current batteries, where can I find the recommended Start up power & AH for my 175 e tec
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Old 15 May 2013, 13:00   #26
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If I am to replace the current batteries, where can I find the recommended Start up power & AH for my 175 e tec
IIRC 900A cca
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Old 22 May 2013, 06:39   #27
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900 seems high? When I have done a google on 900cca batteries it brings things up the size of a tractor battery?


Anyone know how to work out the CCA of my old batteries. I have removed them and they are 75ah leisure batteries.
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Old 22 May 2013, 16:51   #28
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900 seems high? When I have done a google on 900cca batteries it brings things up the size of a tractor battery?


Anyone know how to work out the CCA of my old batteries. I have removed them and they are 75ah leisure batteries.
Just checked the manual, Minimum 675CCA (845MCA) not sure what "MCA" means?
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Old 22 May 2013, 17:13   #29
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Just checked the manual, Minimum 675CCA (845MCA) not sure what "MCA" means?
Marine cranking amps
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Old 17 November 2013, 16:10   #30
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SO my winter projects list is growing - and I want to get this resolved, and I am having more and more issues that I think are battery related.

Anyone got any experience of the high street motor factors doing a load test?

Anyone know any good cheap companies for two batteries?
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