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Old 04 June 2015, 16:39   #21
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Sorry Dave that's what I do. I have a DS Wilson 85 ah for the pump and a Numax 110 ah 900 cca fir starting
Which has always been ok. It just I've herd the Erc needs a big bat but I think mine is big enough as it used to start a V6 te stroke 150ho

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In that case, keep it as it is & see how it goes, don't shell out unless it doesn't work.
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Old 04 June 2015, 16:46   #22
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In that case, keep it as it is & see how it goes, don't shell out unless it doesn't work.

That's what I was thinking because the dealer was up on Saturday at the Ob and I asked him and he said he found no trouble as the battery turned the Ob first time and that's what I have found. Suppose I was just worrying that I did not have enough grunt to turn. Cheers


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Old 05 June 2015, 03:48   #23
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HI Jambo
I presume you were referring to info like this ? I got this from a US site BBC Boards - very useful for all things Merc & Optimax ( obviously lots of these listed are US only but a good guide

"BATTERIES THAT MEET THE REQUIREMENT"- Updated 3/15
This data was provided by Mercury Marine's R&D Department.

Although these batteries were tested for use with the Verado Engines, their superior Reserve Capacity Ratings would make them an EXCELLENT choice for Optimax or EFI engines used in a Bass Application!

The batteries listed are ALL AGM (Advanced Glass Mat) batteries, and were required to meet at least one of the following ratings:

-1000 MCA
-800 CCA
-180ah*, or meet the 135-RC 25 Capacity Rating.

*For Optimax models, this rating would be 105ah (and this rating is SELDOM used in the US- recommend using CCA Ratings).

Batteries were tested to ensure that they "met" their advertised capacities also.

All of the batteries listed are heavy- and they are not cheap. However... if you want something you can depend on... a wise investment!

----------------------------------------------------------------------------------------------
(Testing and information courtesy of Mercury Marine Research & Development)

-Odyssey PC1500, PC1700, PC2150 and PC2250.
-Optima Group 31
-West Marine Sea Volt Group 31 AGM (Edited due to change in capacity of Grp 27).
-Cabela's ** (REMOVED as new-updated specifications indicate they do not meet requirements- See notes below- did not meet advertised Capacity Ratings).
-Trolling Thunder TT1175 and TT1370.
-Excide Megacycle (Mercury Brand) MC-31 and XMC-31.
-Sears Die Hard Platinum 34M (PM-2) and 31M (PM-1).
-Deka Sea Mate/Intimidator 8A31DTM.

** During initial testing, these batteries do not meet their advertised cranking ratings. Later published ratings support this (they do not meet the requirements).

I went for one of these - Odyssey 31-PC2150 AGM Battery
Griffin Batteries Car Batteries - Bike Batteries and much more - Griffin Battery Centres

Jeff

Oh - see you are sorted now
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Old 05 June 2015, 04:04   #24
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Thanks Jeff appreciated


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Old 05 June 2015, 04:46   #25
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Jambo - This is my favourite source of info,,,, apart from Ribnet of course !!

BBC Boards
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Old 05 June 2015, 04:54   #26
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Checked my receipts bought 2 in 2000 still going strong.
they deal with vibration better than normal batts
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Old 05 June 2015, 06:26   #27
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[QUOTE=Jeff;680916]Jambo - This is my favourite source of info,,,, apart from Ribnet of course !!

BBC Boards

tghanks Jeff
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Old 05 June 2015, 06:28   #28
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Originally Posted by dougcrock View Post
Checked my receipts bought 2 in 2000 still going strong.
they deal with vibration better than normal batts
Hi Doug hope you have recovered!!?
I am still up here wx absolutely hellish!!

Please advise what size of Optima you have.
cheers J
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Old 09 June 2015, 14:31   #29
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They are sealed, jky is on about sticking them on charge for a while.
Exactly what I was saying. Thanks, Dave. I was out of town for a bit.

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Old 09 June 2015, 14:56   #30
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Exactly what I was saying. Thanks, Dave. I was out of town for a bit.



jky

Yes but just wanted to be sure


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