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Old 05-24-2011, 10:53 AM   #1
Gatzby
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Default Marine Battery Life

I am sure this has been discussed but I had little luck searching. I have an old ezgo electric cart that has junk batterys. I rarely use this cart and when I do it is for short rides typically under a half hour. I know 3-12 volt marine deep cycles will not have the run time of 6-6 volt deep cycles. But what can I honestly expect. I am trying to get buy on the cheap and I know their will be trade offs.

Thanks in advance for any help.

Steve
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Old 05-24-2011, 11:17 AM   #2
SpoiledRotten
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Default Re: Marine Battery Life

I'm sitting down.
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Old 05-24-2011, 11:33 AM   #3
scottyb
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Default Re: Marine Battery Life

Welcome to BGW! This is my patented answer

3/12v = 36v?
Or can I use 3 12v batteries in my 36v golf cart?
You can use 3/12v batteries in series to create a 36v power supply. However this supply will be lacking in amperage capacity and deep cycle ability. The result will be poor run time and shortened battery lifetime.
The batteries used in your cart should be golf cart specific batteries.
Golf cart batteries are designed to hold a large amount of amperage and to be discharged relatively low over a long period of time.
Automotive batteries do not store as much amperage and are designed for shallow discharge and immediate recharge. Like starting a car and having the alternator immediately begin recharging.
Battery construction differs and plate thickness and count per cell varies with regard to discharge characteristics and designed usage. The thinner plates of automotive or marine batteries give up their amperage much quicker than Golf cart batteries.
You can connect 3 automotive 12v batteries in series and get 36v. You will not have the same amperage reserve or operational characteristics needed to make the batteries perform well or last satisfactorily in a golf cart.
But, it will work for testing or short run usage...
I hope this helps ...
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Old 05-24-2011, 11:51 AM   #4
shadowman
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Default Re: Marine Battery Life

yes you can use them as long as you don,t exspect much from them, think of it as driving your car on 4 of those little dougnut spare tires they give you......also they just arn,t gonna last that long ...............but they will drive the cart.................................
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