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Old 05-06-2003, 10:31 PM   #1
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Coach Batteries

Time for new batteries for the coach.
Which is better 2 - 125 AmpHour 12 V Deep Cycle Batteries hooked in parallel or 2 - 225 AmpHour 6 V Golf Car batteries hooked in series? Or a choice not listed.
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Old 05-09-2003, 11:26 PM   #2
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see http://sierranevadaairstreams.org/ow...ry-config.html

for information about the series vs parallel question.
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Old 05-16-2003, 03:10 PM   #3
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I am posting a reply to my own question. Golf Car 6V batteries in series is the best choice according to a book I am reading on batteries. The problem is that they are too tall for the battery compartment. In fact the 12 V batteries grounded out against the frame when I installed them. For those who have the room and understanding on hooking them up go for the 6 V in series.
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Old 05-16-2003, 05:33 PM   #4
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Trojan T-105

I had the battery box lowered in my 1981 Excella motorhome so that the space was deep enough for the Trojan T-105 batteries. I moved the starting battery forward into the storage compartment and cleaned off all battery positioning angles from the battery compartment floor. The picture shows the proper wiring for series/parallel connection (two "banks" of 6v in series, paralleled for two banks of 12v).
As the picture shows the two outside batteries need to be dropped in first then pushed to the ends of the box. The two inside batteries need to be literally "shoehorned" in between the outside batteries. The new battery configuration powers everything 12v for two days and nights with power to spare.
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Old 05-16-2003, 05:53 PM   #5
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Talking

What does the gravel do?

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Old 05-16-2003, 05:58 PM   #6
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Gravel

That's the gravel on the RV space where I'm parked. Good depth of field huh?
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Old 05-16-2003, 09:58 PM   #7
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So the batteries are no longer enclosed in a compartment? Isn't exposing them to the elements potentially a problem?
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Old 05-16-2003, 10:13 PM   #8
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I guess you don't have to worry about outgassing. As long as the batteries are protected from being hit by road debris which might crack a case then you are probably OK. I looks like terminals are covered and I'm going to assume that all terminals have been sprayed with a corrosion inhibitor.
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Old 05-17-2003, 08:40 AM   #9
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Batteries??

Would this be the reason why none of my 110 wall sockets work, the battery does fine on everyhing 12volt (car). Wheree the inverter be, oh were oh were???//Is there one?
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Old 05-17-2003, 12:32 PM   #10
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Compartment?

There never was a battery "compartment". The box that the batteries sit in surrounds them on three sides. The pneumatic steps fold into the area where you see the ground (gravel). Yes, the terminals are sprayed with corrosion inhibitor.
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Old 09-25-2003, 08:11 PM   #11
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Are those batteries in the above pic sealed ones or can the caps be taken off and filled with water? I'm looking to replace my two coach batteries and the one engine battery. The engine one is sealed, but the two coach ones are re-fillable. The two coach ones are not even the same size or brand, and all three are corroded as heck. What brand do you all recommend. I've heard Interstate is good. All three are in the battery compartment under the wooden trap door at the entrance of my MH.

Edit: What is the switch I see in the pic for? Some kind of battery saving disconnect?
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Old 09-25-2003, 08:44 PM   #12
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I'll try it

Will try to tell you what I have as 310 mh takes 3 batteries as I think yours may.

One regular battery to start motor with a knife switch you asked about to separate it or when switch closed put it in parallel with coach batteries. This is to safeguard starting battery being drawn down.

Two coach batteries that are deep cycle for longer life when depleting and recharging as coach batteries are subjected to.

I have found MH's to have a few little phantom draws that discharge things when sitting up, electric steps seem to be one, so a 2 amp trickle charger or a solar charger to keep up batterries if sitting for an extendended period recommended.


I also put a thin rubber layer under batteries as I personally think this helps.....jem
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Old 09-25-2003, 08:49 PM   #13
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battery brands

Locally here in Tampa, have friends in the same factory that makes Diehards and Intersates.....Specs are obviously different as far as materials on different levels and qualities of the same battery. Get what you pay for ....Quality Interstates have been found to be amongst the best.
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Old 10-04-2003, 09:39 PM   #14
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old batts

This is how it is now. I need to clean this up. I want 2 deep cycle and one sealed batts. Hopefully all the same brand.

Please tell me if the image showed up. Having trouble with my camera software.
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