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Old 03-24-2010, 08:17 PM
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Default Whats a good boat battery that wont break the bank?

Im needing a boat battery or two and want to know your thoughts on reasonable priced batteries. I have heard the optima are good but are out of my price range. thanks
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Old 03-24-2010, 08:21 PM
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I like the Duralast from auto zone they are duel purpose and are 27's with 1000 amps
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Old 03-25-2010, 06:00 AM
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Sears DieHard Marine, Group 27's or 31's if you can fit them.
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Old 03-25-2010, 06:07 AM
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Deka
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Old 03-25-2010, 06:19 AM
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Cabela's just had a big sale on their AGMs. I picked up a group 27 for $139.00.
Think the sale may be over though.
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Old 03-25-2010, 06:32 AM
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Many threads on here about marine batts. It is well documented that Optimas used to be pretty good, but their quality has gone downhill.

Probably the best bang for your buck with a warranty is Die Hard Platinum Marine. 3 year full replacement warranty and NO MAITENANCE. I picked 2 up @ $179 a piece a few weeks ago.

When it comes to Marine batts, I wouldnt skimp. You will get what you pay for.

The Cabela's AGM are priced nicely too, but you will need Lug adapters to increase the size of their posts.

Good Luck.
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Old 03-25-2010, 06:39 AM
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Deka
I'll go along with that.

Flooded cell batteries are still the best value in batteries. Not the best batteries, but the most battery for the money.
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Old 03-25-2010, 06:52 AM
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The Cabela's AGM are priced nicely too, but you will need Lug adapters to increase the size of their posts.
You'll only need lug adapters if you don't have lugs for 1/4" posts.

Also, the cabelas group 24 has very similar stats to most 27s.
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Old 03-25-2010, 07:03 AM
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you will need nothing but 1 inch fender washers at about 12 cents apiece,....
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Old 03-26-2010, 07:48 AM
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Post Dont know if they are the best,

but have been using DEKA for the past 7 years and have had no problems. Prior to that used all the chain stores and racing car brands.

DEKA makes batteries for many companies, all that is changed is a new decal.
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Old 03-26-2010, 01:02 PM
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When in doubt, price batteries by the pound.

You may not NEED the best battery around, and if you take proper care of it, a cheap one could last just as long. Keep it clean, charged, full of distilled water, and don't let it freeze.
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Old 03-26-2010, 01:16 PM
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Have four of the autozone duralast marine batts, 1 year on them and so far so good. Id rather buy less expensive batteries and replace them every 4 years than try to get 6 or 7 out of a high end brand.
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Old 03-26-2010, 01:32 PM
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Quote:
Originally Posted by Glen E View Post
you will need nothing but 1 inch fender washers at about 12 cents apiece,....
Glen,
FYI, you keep saying that. BUT, understand, some boats (including my current boat!) does NOT have Ring type lug terminals on the battery cables, they instead have the older style Auto type Lug terminals that just slide over a big 3/4" to 1" thick post. If you are in that situation (as am I), you would have to cut off your existing lugs, crimp on some new 3/8" Ring type terminal lugs on all your battery cables (+ and - sides!). It's not as simple as using a fender washer to make more surface area. I love the Cabela batteries, and recommend them all the time, but the post is a consideration.

Deka sells a nice AGM battery, with DUAL terminals on it. That is, it has both the bolt type terminal (similar to the Cabela), as well as the old style auto type 3/4" post. So you can connect anything you want. The Deka AGM's with Dual Terminals on them have "DT" in model #. For example I'm using the "8A31DT" which is a AGM, Group 31, Dual Terminal battery.

Here are the two terminal posts I'm referring to. The first is a "Ring type" needed for the Cabela's:



The 2nd is a "Post type" needed for what I call "old style auto" posts:



There is one other option, but I don't like it. It's installing a lug adapter. but that adds another point of corrosion and failure. But I have seen an adapter that converts the bolt style to to the "old" style and vice versa.
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Old 03-26-2010, 02:15 PM
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I use your "old style posts" with fender washers...that's what I'm talking about...properly attached and tightened down to where the washer bends a but, they don't move at all if the batt is also secure...4 years and no problems on my Cabellas....Here's the same Cabella batt using the same fender washer and my "old post" in my car:

...
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Old 03-26-2010, 02:25 PM
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Gotcha. I might do that on a car or truck, but I would not attempt that on a boat.

Did the lug on your car actually tighten down enough to wrap around and touch the bolt all the way around? Or are you just assuming the surface area of the washer to the top of the lug is enough of a connection?

My "old style" lugs, are so fat that would not even come close to tightening around the Cabela terminal bolt, so they would just be loose until clamping down with the washer as you did. I would not like that as the connection point for boat, which is using allot of juice all the time.
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Old 03-26-2010, 04:04 PM
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If you do replace the post style ends and crimp on the ring terminals, keep in mind the Cabela's AGM is not 3/8. It is either 5/16 or even 1/4. I'll check next time I'm in the boat.
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Old 03-26-2010, 04:31 PM
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there are 4 - one above and below sandwiching the lug. Works for me -
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Old 03-27-2010, 08:01 PM
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Quote:
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If you do replace the post style ends and crimp on the ring terminals, keep in mind the Cabela's AGM is not 3/8. It is either 5/16 or even 1/4. I'll check next time I'm in the boat.
They are very close to 1/4", but they are metric, M7 I think. I bought stainless set screws (see below) and put them in with red locktite. Then I use the M7 stainless locknuts, and now my Cabela's AGM batteries look like an ordinary marine battery .... with thin posts.
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Old 03-28-2010, 06:52 AM
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That's a lot of work around when you can buy Deks's AGM for not much more than Cabelas.
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Old 03-28-2010, 10:21 AM
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I've been boating for many years and could never figure out the fuss over expensive batteries. I've tried them and can't justify the high price when the yield is not much better than the cheap batteries - for small boats with two or fewer batteries.

These days I buy the $55 group 24 marine batteries from wallmart and replace after two seasons regardless of their condition. One usually gets recycled into my old jeep which is used to plow my driveway.

Ymmv.
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