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 9/1/2017 1:58 PM
 

Hi folks, as this is my first post allow me to introduce myself. I am an old man (78 in Nov) who lives in Arkansas. I have a c class that needs coach batteries. I never dry camp, that is to say I always use shore power except when traveling. My question is: Do I need deep cycle batteries? or would two 12 volt automobile batteries in parallel work ok. Or should I use two 6 volt?.......Thanks

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 9/1/2017 8:06 PM
 

Hi there RC:

Glad you took the time to post your question.

Since you usually use shore power, I would suggest that two 12V deep cycle batteries would be the best for your rig. You can easily get by with two 12V Group 24 deep cycle batteries.

Regular car batteries are not recommended, since they provide a lot of power for only a short time, whereas the deep cycle batteries can provide steady power for a much longer duration.

You can usually find acceptable deep cycle batteries at Walmart.

For your limited use situation, spending the extra bucks for two or four 6V deep cycle batteries doesn't make economic sense. Besides, the 6V deep cycle batteries are taller than the 12V deep cycle batteries, and therefore are likely to not fit in the existing battery space of your Class C.

(Even in my Class A, the 6V batteries are too tall for the existing battery compartment.)

Cheers and happy travels.


Cheers and happy travels, Mike www.backroadtravelers.com
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 9/2/2017 10:46 AM
 

Thank you MikeDesch for your response to my question. You confirmed my thinking so I will shop for a couple of 12v deep cycle if I can find some 9 1/2" tall.

Cheers......Old youngster

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 9/2/2017 7:15 PM
 
 Modified By RVA  on 9/15/2017 9:46:41 AM

RC - I'll echo Mike's comments. When we were doing lots of dry camping, we always bought what provided the greatest capacity, and this was usually Trojan Golfcart 6v batteries in series. Now that we usually have hookups, we've switched to 12v Marine Deep Cycle batteries, and haven't noticed any difference.

I'd like to expand on a couple of Mike's points. It's very important to get a DEEP CYCLE battery instead of a Starter battery. Some think the more AMP HOURS or COLD CRANKING AMPS the better, and they are if you need to start a big engine, particulary in cold weather. What you want is a battery that will supply a modest amount of amps for as long as possible, thus the DEEP CYCLE. A typical 12v Deep Cycle Battery will have specs showing something called RESERVE MINUTES, and this is the figure that's most important for RV coach batteries. A Group 24 12v Deep Cycle spec sheet will probably show something like "23 amps for 150 minutes"; where the engineers came up with the 23 amps I haven't a clue. Adding a second battery in parallel would double the minutes. Because your needs seem modest, you might want to start out with just one battery and add a second later if necessary; 23 amps for 150 minutes is a lot of power! BTW - Mine measure 12x6.75x8.75. Because my compartment is 9" high it's a tight fit and is necessary to install the battery cables before inserting the batteries. Good luck. - Dave
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 9/3/2017 7:57 AM
 

Hi Dave and thanks for your input. My space is also limited especially in height, only 9 1/2". The golf cart batteries that I have looked at are too tall so I will be looking for deep cycle marine that will fit in the space. Thanks again and have a great weekend and holiday.......RC

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