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Old 09 April 2013, 03:10   #1
Country: Other
Town: balzan
Boat name: ranieri
Make: ranieri
Length: 6m +
Engine: outboard 140hp
Join Date: Jan 2013
Posts: 21
Which Marine battery to purchase!!

Dearest friends,

I want to buy a marine battery for my boat a 75 amp/h one.

I am a bit confused which is the best to buy if either a liquid type or a gel type marine one. Can anyone give me some advice please?? appreciate all kinds of ideas.

Thanks in advance,

Yam 140.

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Old 09 April 2013, 03:38   #2
Country: UK - England
Town: Sussex
Make: RIBTEC 655
Length: 6m +
Engine: Yam 150
Join Date: Oct 2007
Posts: 1,152
'Liquid' the gel batteries can't cope with the starting loads and overheat - NuMax seem to be popular - I've never had any problems with them.

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Old 09 April 2013, 04:40   #3
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Jizm's Avatar
Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
Posts: 3,803
Had a few off of batterymegauk on ebay. No problems so far. Based in Gloucester.
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Old 09 April 2013, 05:11   #4
Country: UK - England
Town: southampton
Make: ribeye
Length: 6m +
Engine: 100
Join Date: Jul 2006
Posts: 168
Been in my boat now for nearly 8 years. Can't complain at that.

Varta Professional DC LFD75
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Old 09 April 2013, 10:34   #5
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,538
Whatever you do - if you go for a liquid one - make sure it's a sealed type!
("Maintenance free" in sales speak)

OTher Q- is it just to crank the engine, or do you have a load of electronics / nav lights etc hangiong off it as well? If so a leisure battery might ba a good idea - although I ran a rib on a "standard" 60Ah battery for 4 years. I had to replace it, but it was half the price of the (discounted) leisure battery I put in recently.

If you are only starting the engine & a VHF a "standard car" battery will probably work OK, as long as you can keep it topped up.
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Old 09 April 2013, 11:00   #6
chris.moody's Avatar
Country: UK - England
Town: Rugby & Southsea
Boat name: Tigga
Make: Avon SR4
Length: 4m +
Engine: Honda BF50
MMSI: 235910073
Join Date: Jun 2011
Posts: 980
I bought two of these and they work great as either a leisure battery, or starter battery (and it's cranking an inboard diesel with no glow plugs).

No connection with Tayna other than being a satisfied customer.
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Old 09 April 2013, 14:55   #7
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Dry Run's Avatar
Country: UK - England
Town: portsmouth
Boat name: Hullabaloo
Make: Humber
Length: 8m +
Engine: 225 Optimax
Join Date: Mar 2011
Posts: 611
My experience of gel batteries is that if you keep your boat stored in the winter (ie you don't use it), there is agood chance that the battery will "die"! It can sometimes be "shocked" back to life, but I think I prefer the normal type overall!
You get what you settle for!
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Old 09 April 2013, 15:04   #8
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Typical 'leisure' batteries aren't really suitable for high load cranking, they're more of a slow discharge/re-charge type of unit, designed to run lights, water pumps, etc in caravans over a weekend away where no mains connection is available. This is why they have a generally high Ah capacity, but a low Cold Cranking Amps (CCA) rating.

A really good compromise is the Numax CXV24MF, which has enormous 900 CCA and a relatively high 86Ah in a small enough casing to fit in a red battery box:

Numax CXV24MF Heavy Duty Maintenance Free Leisure Marine Battery 86 Ah 900 CCA | eBay

I've run a few of these over the last 5 years and they've been excellent.

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Old 09 April 2013, 15:14   #9
Country: UK - England
Town: Looe
Make: Delta
Length: 4m +
Engine: Mercury
Join Date: Apr 2004
Posts: 1,332
We always use numax, never had one go wrong yet!
Black Dog Marine
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Old 09 April 2013, 15:41   #10
Oscarguitar's Avatar
Country: UK - England
Town: Poole
Boat name: Half Cut
Make: Cobra 8.6
Length: 8m +
Engine: Verado 275
MMSI: 235104619
Join Date: Jun 2011
Posts: 377
Get an AGM battery and forget about it. Odyssey make a very good battery. Find out want CCA you need and work from there

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