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DiverDennis
#1 Posted : Saturday, June 11, 2011 2:26:20 AM(UTC)
DiverDennis

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Hello All,

Had one of the 4 year old dual purpose EVERSTART MAXX MARINE (Johnson Controls) batteries go bad (failed load test) so it was time to get new ones. Found a good deal on two dual purpose DEKA SEAMATE AGMs (East Penn, 8A31DTM) at Batteries Plus...$167 each.

Researched Deka AGMs online and couldn't find a reason not to buy them. And, I was told by Batteries Plus technical support that my Charles C-Charger (10A per bank, 14.2 charge, 13.65 float) would be sufficient. So I bought them.

Sure was fun getting them 70 pounders down into the battery trays under the deck. Liar

Hopefully, we'll be good for the next FIVE years.

DD
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jimski2
#2 Posted : Saturday, June 11, 2011 5:17:12 AM(UTC)
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Use only distilled water to top off your fluid in the batterys. Tap water has a lot of minerals which neutralize the acid and shorten the battery life.
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Capt. Insane o
#4 Posted : Saturday, June 11, 2011 5:25:35 AM(UTC)
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Dennis,

Sounds like a good buy Dancing from what I’ve read & know of a friend that has AGM’s aboard his 44' S/R is going on his 6th season with them Applause Gosh I hope I didn’t jinks his battery’s by posting this Silenced Hopfully U’ll get the same good service outta your battery’s Pray

A Hilly Billies buddy Anxious
Pain is temporary but pride is forever
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jhemp3
#5 Posted : Saturday, June 11, 2011 6:52:05 AM(UTC)
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I'm sure the Deka's are better quality batteries but I've had good luck with Walmart's best marine batteries. Two year full replacement; no questions asked. Normally, I get three years of service and if you are of the mind, they can be replaced every 23 months free. Around $80 bucks.
Jim
Jim Hemphill
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'87 32' FBS, USCG Certification #1057921
Berthed MM 207 Tennessee River, Picwick State Park Marina
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dougrose
#6 Posted : Sunday, June 12, 2011 4:47:10 PM(UTC)
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My two house batteries are AGM Optimas, size 31, and I put them in in 2002. The start batteries are smaller optimas, and they take a beating starting big diesels. Still, I have had them for five years now.

I think that maintaining the correct float voltage is essential to getting long life out of batteries.


1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
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DiverDennis
#3 Posted : Monday, June 13, 2011 3:37:47 AM(UTC)
DiverDennis

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Originally Posted by: jimski2 Go to Quoted Post
Use only distilled water to top off your fluid in the batterys. Tap water has a lot of minerals which neutralize the acid and shorten the battery life.
I concur. However, AGMs are maintenance free.
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Specs: http://www.boatm8.com/my...amp;page=boats&arr=0
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1 user thanked DiverDennis for this useful post.
jsimanella on 6/13/2011(UTC)
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