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Old 03-12-2012, 08:48 AM   #1
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Coach Batteries

Is there anything special about the coach batteries or can they be replaced with any quality deep cycle battery?
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Old 03-12-2012, 09:20 AM   #2
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Nothing special, yours are probably 6v golf cart batteries, about 220 amp. They are a standard size unless you get up into the higher capacity batteries.
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Old 03-12-2012, 09:24 AM   #3
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Physical size and amp hour rating would be my concern. We had Interstate in last coach, lasted 8 yrs.
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Old 03-12-2012, 09:34 AM   #4
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Any deep cycle RV/marine batteries will work.
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Old 03-12-2012, 04:15 PM   #5
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If you do not have 6v golf cart type batteries for house batteries now the overwhelming majority opinion is they are the best choice.

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Old 03-12-2012, 06:08 PM   #6
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Yes, you can replace coach batteries with any DEEP CYCLE battery.

Now, here is a challange. With the execption of some high priced batteries (Like AGM) or unusual sizes (iike the "D" sizes 4D or 8D) FIND A DEEP CYCLE BATTERY.

Marine/Deep Cycle are common, they are also NOT deep cycle batteries, they are starting batteries first with a very slight tolerance for slightly deeper cycle than an automotive battery.

The GC-2 Golf car battery, is low cost, very common (Sam's has 'em for what, 70 each) and are DEEP CYCLE batteries, 2 of them in series gives 230 amp hours, (About an (8-D'
s worth) and are easily carried (one at a time) (I can carry an 8-d, but... Not easily or far)
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Old 03-13-2012, 08:24 PM   #7
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Quote:
Originally Posted by wa8yxm View Post
Yes, you can replace coach batteries with any DEEP CYCLE battery.



Marine/Deep Cycle are common, they are also NOT deep cycle batteries, they are starting batteries first with a very slight tolerance for slightly deeper cycle than an automotive battery.
Not true...deep cycle is deep cycle. The only consideration is if you are using a deep cycle as a starting battery as well as a deep cycle battery (as you might in a marine application), an allowance should be made for the lower cranking amps compared to a similar size starting battery. As a general rule, if you are going to use a true deep cycle battery also as a starting battery, it should be oversized about 20% compared to the existing or recommended starting battery group size to get the same cranking amps.
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Old 03-14-2012, 11:36 AM   #8
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Most "marine deep cycle" batteries are combination types, heavy on the starting capability and only slightly tailored for deep cycle use. Any battery exclusively designed for deep cycle use would probably be superior. That's the real advantage of a golf cart 6v battery - they are deisgned from the ground up for deep cycle use in a rough environment.

Another option is a "trolling motor battery". These are also car battery designs that have been tailored for deep cycle applications (running a trolling motor all day) and generally perform reasonably well. Walmart is one source for them.
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Old 03-14-2012, 12:07 PM   #9
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Based on my research on this forum and elsewhere, using 2 6-volt deep cycle batteris in series is most effective. Yes, other batteries will work, but how efficiently, and for how long? I just replaced my 2 12-volt batteries with Trojan T-105. There appears to be a very strong support for these particular batteries in general and from what I found Trojan was by far the best documented and forthcoming with specifications, appliation and charging info, etc. online. So far, so good....
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