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Old 25-10-2014, 14:31   #1
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Battery predicament

I have a dumb boat battery dilemma. I'm currently overhauling the electrical system of my Cal 2-27.. also adding solar etc. The issue involves the choice of batteries. I've been using 1 group 27 Interstate "deep cycle" marine battery for engine starting and short weekend sails/electrical usage. This battery conveniently fits into the battery box that is beside the motor. This box is designed to hold two group 27 batteries. I've been debating whether my battery bank should consist of 2 6v Golf Cart batteries or should I just buy another 2 Group 27s that would fit beautifully into the premade battery box. The current group 27 will be my starting battery for either case. I know the Golf Cart batteries are probably better overall but I would have to create a new battery box to hold them in place. This battery box would likely be in the cabinet that is directly under my propane stove top. I know that is probably not a good thing. To be fair, the premade battery box is also some what under the stove top but the right burner never gets used (eh).


Option 1

2 Group 27s as house bank ~200 amp hours
They fit into existing battery box
Old Group 27 as starting (in cabinet)

Option 2
2 Golf Cart 6vs ~220 amp hours (in cabinet)
Build new box in mediocre place and acquire cuts while inventing new cuss words
Old Group 27 as starting in existing box

Option 3
Drink heavily and don't worry because candles still work


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Old 25-10-2014, 15:06   #2
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Re: Battery predicament

My order of preference would be

Option 1
Option 3
Option 2

However I really don't like the batteries anywhere near (and below) the burner

Unless the boxes are well sealed but vented safely away form potential ignition sources.

All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
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Old 25-10-2014, 15:18   #3
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Re: Battery predicament

You do understand that when batteries are charging, they produce hydrogen gas right? So were it me, not that it's like that anything'll happen if you leave them where they are, but it'd make me a wee bit nervous when I cooked. Knowing that my stove was just overtop of a small Hydrogen gas factory ;-)

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Old 25-10-2014, 15:19   #4
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Re: Battery predicament

Don't cook while charging.
Stu Jackson
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Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
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Old 25-10-2014, 15:22   #5
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Re: Battery predicament

For weekending/short cruises the 27's will be fine.
Take two at low eight
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Old 26-10-2014, 10:33   #6
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Re: Battery predicament

You can buy boxes for golfcarts... No need to make own.

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battery, men

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