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Old 02-24-2014, 08:52 PM   #1
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Need a new house battery

Hello everyone, I was looking for some advice on a new house battery and would like to know, in simple terms, what would be the best bang for the buck. I do some boon-dockin when we go 4-wheelin' and usually need two or three nights on a single battery. We only really need the power for the water pump and some limited lighting after dark. We normally only use the camper to shower and sleep, otherwise outdoors ridin' or sittin' by the fire. I also need the battery to spark the propane fridge when needed. Any advice on a "24 or 27 series" would be welcome. Thanks, Mike
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Old 02-24-2014, 08:54 PM   #2
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If you have the room, I say go 27.
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Old 02-24-2014, 09:05 PM   #3
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Originally Posted by Surveyor Mike View Post
Hello everyone, I was looking for some advice on a new house battery and would like to know, in simple terms, what would be the best bang for the buck. I do some boon-dockin when we go 4-wheelin' and usually need two or three nights on a single battery. We only really need the power for the water pump and some limited lighting after dark. We normally only use the camper to shower and sleep, otherwise outdoors ridin' or sittin' by the fire. I also need the battery to spark the propane fridge when needed. Any advice on a "24 or 27 series" would be welcome. Thanks, Mike
Do not purchase "Marine/RV battery". Only deep cycle battery will go the distance you want. A 27 is somewhat larger than 24 series and much more capacity. Go online and get specs including height. Check your box/space and see what will fit before you decide.
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Old 02-24-2014, 09:10 PM   #4
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I was under the impression that a marine/RV batt. was a deep cycle?
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Old 02-24-2014, 09:18 PM   #5
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I was under the impression that a marine/RV batt. was a deep cycle?
Not really, the marine has enough current flow (high) to start the boats engine. For this they add more thinner plates to get that current. Deepcycle is only for slower, longer current draw. So the marine battery is a useful compromise from engine starting and deep cycle.
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Old 02-24-2014, 09:19 PM   #6
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Got it, thank you.
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Old 02-24-2014, 09:27 PM   #7
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I was under the impression that a marine/RV batt. was a deep cycle?
That's a common impression. A marine is somewhere between a true deep cycle with solid lead plates and a starting battery, which has a lot of thin plates.

Solar-electric has a great detailed explanation.

But, you asked for a simple suggestion, and I would go with a group 27 deep cycle.

A deep cycle as it will last longer than a marine. A group 27 will give you about 25% more capacity.

If unsure between two batteries in the same type and group; buy the one that's heavier.
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Old 02-24-2014, 09:28 PM   #8
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Any brand recommendations from the long time campers?
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Old 02-24-2014, 09:33 PM   #9
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Higher price and greater weight (I.e., thicker plates) is typical of the better batteries. Its a case of you get what you pay for.

I like Trojan batteries.
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Old 02-24-2014, 09:37 PM   #10
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Interstate shows only 6 volt units as deep cycle, the 12 volt are dual use, starting and longer cycles.
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