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#2
03-31-2009, 11:18 PM
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Re: batteries
East Penn/Deka AGM group 27 or 31. Deep cycle for house, dual purpose for starting. West marine wants $260 for 'em but they cost about $150-160 from independent dealers.
Keep in mind modern starter motors may require in excess of 950 cranking amps so no skimping 
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there's no such thing as normal anymore... 
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#3
04-01-2009, 09:27 AM
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Re: batteries
Single Midstate Marine "Group 95R" sealed lead-acid battery. (Next size up from group 31) Purchased as a "blemished" battery for $165 with 7 yr. warranty, including 36 month free replacement
815 cold cranking amps, 205 amp hour rating, projected cycle life of 30-40 cycles, weighs 82 lbs. Battery is kept on 8 watt solar automatic battery maintainer. I rRecently switched from dual to largest single battery I could fit in original fiberglass battery box. I also carry a capacitor discharge jump start box, which I have learned is enough to start my 90 optimax by itself. I only need 95 ah and 11.8 volts. 11.5 volts will not start the motor, even though it will spin very fast.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes. Fr. Frank says: Jesus liked fishing, too. He even walked on water to get to the boat! Currently without a SeaCraft  (2) Pompano 12' fishing kayaks '73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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#4
04-01-2009, 09:31 AM
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Re: batteries
I've been running Interstate's and have had very good luck with them.I still prefer the good old lead acid batteries,(but that's just me).
In my Tsunami,I'm running two 27 series Interstates,a Deep cycle(SRM-27B 180CCA),for all the electronics,Down riggers, kicker motor, etc,and a starting battery(27M-XHD 180CCA) for the main engine. Works well,for me,and they have stood behind their product.the place where I have always kept my boats is a dealer for them. In the two times in the last twenty years,I had a problem,he exchanged them without a question.
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All this,just for a boat ride
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#5
04-07-2009, 02:43 PM
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Re: batteries
Since I work for Academy Sports up here at corporate in Katy Tx I get 25 % off stuff. They have the Stowaway brand batteries so I got a 1000 800 starting batt and a Dual purpose 730 575 connected with a Perko 4 way. Seems to do the trick. I can run my Stereo ( which I beefed up to 400 watts and a 10" sub, for the kids when we play on the fresh water) and livewell pretty much all day and start it back up on #1 and then charge #2 on the way home.. Then trickle charge em both over night..Works great.. I would not go off shore with out my 2 batts and my Johnson 4 hp kicker
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