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Old 04 July 2015, 11:22   #11
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900 CCA would be my suggestion for that engine.
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Old 04 July 2015, 11:25   #12
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http://pages.ebay.com/link/?nav=item...obalID=EBAY-GB

These are a good all rounder
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Old 04 July 2015, 11:25   #13
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Quote:
Originally Posted by willk View Post
Might I suggest buying only ONE battery and taking the chance that it will perform well during the holiday this year - then look at a twin for it later.
Strangely... (Irishley??) Logical......All things considered
Either way Nash buy the best you can afford...and any doubts it may pay you to take/borrow a Battery Pack..nothing worse than any easy fix...that wasn't!
Specially in very precious Holiday time out.
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Old 04 July 2015, 11:55   #14
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Yes i baught one last year and it turned my 150 hp V6 mariner no problem.
Hope it helps. BTW I would go along with Wilk's suggestion and for safe of mind get a loan of a bat pack to cover you over your hols.
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Old 04 July 2015, 12:30   #15
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Originally Posted by Nasher View Post

Euro car parts are normally good, but you need a specific vehicle to search their site really.

Nasher.
Used to be the case - but now you can search battery types as well.
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Old 04 July 2015, 12:33   #16
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Go with a good single battery you will be fine. Two batteries and splits are all about backup and leaving boats on moorings etc. if as you say you are using it all week and it's charging you will have no problems at all 👍
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Old 04 July 2015, 14:21   #17
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. So taking 200 out of it to buy batteries is going to make a huge dent.
.
I've only ever run one battery and never paid anything approaching 100 for one.
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Old 05 July 2015, 10:10   #18
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Last week in July for a week.
Will you be around this year?
We're down Sat 25th July to Sun 2 Aug. I'll drop you a pm with my new mobile no.
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Old 06 July 2015, 16:25   #19
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So,

Some facts as to what I've been running for the last 10 years.

I have two Bosch S4 008 batteries in my boat. These are rigged with two isolators and a VSR.
So, only one in use at a time.

Apparently these are only 74Ah and 680CCA.

The Owners manual for my 150hp Optimax requires a minimum of 800CCA.

Oops, I've been running undersized batteries with no problems!

The only issues I've had are when the boat has been left for several weeks with lots of rain and the bilge pump (with a water witch solid state level switch) has drained the in use battery. (also have a fuel gauge live at all times).

So
I reckon that one of the Bosch batteries that I have would be OK for your engine. 150 Optimax is a 2,5 litre V6 with a compressor to also turn over.

Based upon the 800CCA requirement for my engine, for your similar engine without a compressor I would have expected perhaps 750CCA recommended.

If funds were tight I think I'd go for one battery of 100Ah (as recommended by Suzuki I think you mentioned), with about 800CCA?

I hope this is of use :-)
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Old 06 July 2015, 18:42   #20
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Gents

Thanks very much for all your help.

I've also dug a little further into the batteries I've been using for 10yrs.

No. 1 is a 90AH 670CCA Halfords special
No. 2 is a 70AH 500CCA Delphi.

Both of these have started the engine in the past, so that lowers my expectations, I'm going to concentrate on CCA as that's what starting the engine needs, and go for @780CCA, which normally runs out at @70-80AH.
As has been mentioned my old tech EFI 200 doesn't have a lot to keep going once running, just a car type fuel pump, so I'll be OK especially as the old Delphi managed.

I've also discovered that both the batteries are type 096R, which is normally associated with American vehicles and the +ve and -ve terminals are the other way round to UK 096's.

As you can imagine it's harder to get hold of 096Rs and they are slightly more expensive, luckily I can rearrange my cables enough to swap to 096s.

780CCA is at the top end of what's available at a reasonable price in 096 size, but Varta and Exide both do one at @60.

Need to spend some time finding them as cheap as possible now, or even take a trip to the breakers.

Nasher.
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