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Old 09-16-2009, 11:04 AM   #1
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Escape Battery pack

I see the dual battery option on the escape is two 6Vs (in series I assume).
What advantage does this hold over two 12Vs (in parallel)

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Old 09-16-2009, 11:49 AM   #2
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Re: Escape Battery pack

I think 2 6V put out more amps (amp hours) than 1 12V.. I don't think they can match the output of 2 12V..

But that's the extent of my guessing..
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Old 09-16-2009, 01:00 PM   #3
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Re: Escape Battery pack

You get the about the same stored energy (amp-hours) from two similarly priced 12-V or 6-V batteries. Ron, you are correct that you put the 6-V batteries in series or the 12-V batteries in parallel, so in either case you get 12 volts. You would be able to get a higher peak current from the parallel 12s, but that makes no difference at all in our application.

I decided too late to go with twin batteries, so I am stuck with one 12-V on the bumper, and one mounted under my rear dinette in a sealed compartment that is vented outside.

An advantage of twin 12s would be that you could run on one, and when it gets low, switch to the other. But we do not really have this advantage, since the law requires that the carbon monoxide and propane detectors be constantly energised. Instead, we have one battery that can be swtiched off, and one that cannot.

I do not like the twin 12-V arrangement in my trailer. The switch to turn on and off the inside battery does not seem to be designed for large currents. When you connect two batteries of this type (batteries with low internal resistance) in parallel, if they do not have equal charge, there will be a short-lived high current while the batteries match voltage. This means that you should balance the load at all times. It also means that you ought to replace both batteries at the same time when they wear out, even if only one is defective.

So I say now, get twin 6-V batteries. If you go with twin 12-V, use them both - don't switch one off. But get twin batteries. The fan in the furnace draws the battery down fast on cold nights.
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Old 09-16-2009, 05:36 PM   #4
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Re: Escape Battery pack

That's good info. A couple of questions... Is the dual battery option location like this for the 17' and the 19? If you get the dual 6V option, what kind of batteries do you get?

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Old 09-16-2009, 09:29 PM   #5
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Re: Escape Battery pack

I have one question too.....My plan is to have two batterys....one of each side of the rear bumper of a 17' plan A. I plan to wire two 12v in parallel. If anybody have this setup ? I appreciate some comment.

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Old 09-17-2009, 11:01 AM   #6
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Re: Escape Battery pack

Quote:
Originally Posted by patjul
My plan is to have two batterys.... I plan to wire two 12v in parallel.
Why 12-V batteries in parallel instead of 6-V batteries in series? What advantage do you see?

I definitely prefer two bumper-mounted batteries to the solution in my trailer.
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Old 09-17-2009, 11:06 AM   #7
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Re: Escape Battery pack

Quote:
Originally Posted by dalama
If you get the dual 6V option, what kind of batteries do you get?
The 12-V batteries that I got with may trailer are from Interstate, which is a well-established brand.

For your trailer, you need deep-discharge batteries. These look like ordinary automotive batteries but you can discharge them much further without damaging them. The trade-off is that you don't get as much maximum current (cranking power) with a deep-discharge battery, so that is why they are not used in cars.
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Old 09-17-2009, 12:16 PM   #8
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Re: Escape Battery pack

The dual 6v batteries that came in our 19' are Interstate also. Good brand.

The location under the dinette seat is no problem at all. Easy to get at with the sliding table, the hinge on the seat top and the easy opening plastic container they're in. As long as we have the trailer plugged into AC power, I plan to check the water levels monthly.
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Old 09-17-2009, 01:59 PM   #9
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Re: Escape Battery pack

Good reminder, I have not checked the levels in mine at all. It has been sitting plugged in for a couple weeks now as an out of town friend who is here painting for me, is using it as a bedroom.
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Old 09-18-2009, 01:42 PM   #10
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Re: Escape Battery pack

Quote:
Originally Posted by ronstew
Quote:
Originally Posted by patjul
My plan is to have two batterys.... I plan to wire two 12v in parallel.
Why 12-V batteries in parallel instead of 6-V batteries in series? What advantage do you see?

I definitely prefer two bumper-mounted batteries to the solution in my trailer.
I think the 12 volt group 27 is cheaper than a 6 volts batterry, and is easy to find ( not sure)......I like the symplicity to have two battery mount outdoor on the bumper, is easy to remove, no need to ventillate properly and i wire a solar pannel directly on the battery to charge it on long vacation....and remove it at the end. And plan to do this setup to help the hitch weight too....( I dont want to use a equalizer hitch )
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