Which battery is best? - Page 2 - Fiberglass RV


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Old 05-17-2014, 09:13 AM   #15
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There's more than enough room to set the batteries parallel to the scamp. With angle iron the added length will be supported. Do you really think screws in the frame will jeopardize the structural integrity? If so, couldn't I bracket the support bars in place and screw them (with spacers) to the cross bars?
Is the main frame that weak that it can't support the weight of an additional battery?
I appreciate the input but I would hate to have to lug a 2nd battery in the tug and do a switch out as needed every time. Charging would be more of a pain also.
Thanks!
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Old 05-17-2014, 09:14 AM   #16
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Additional tongue weight is no issue on the tug.
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Old 05-17-2014, 09:27 AM   #17
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There is "some" history on bent frames on Scamps and Casitas, (and maybe others) but with no exact causes cited. BUT... With two LP tanks and two batteries one would be adding a lot of weight.
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Old 05-17-2014, 01:11 PM   #18
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Also I thought I read on a thread somewhere that scamp had a poor quality inverter at some point. Does anyone know if that was remedied by the time the 2011 models came around?
It's unclear what you're asking about here- Did your Scamp come with both a converter (120v to 12v) AND an inverter (12v to 120v?)?

If the question is related to use by your C-Pap:
Many such units are in fact already 12v powered, at home via a 120v-to-12v adapter that you plug into a wall. Many people have successfully run those units directly off 12v power when off grid. This is a much more efficient use of the 12v power you have stored in the batteries. Running 12v power across an inverter only to adapt it back to 12v results in a measurable loss of stored energy.

More info on C-Paps and 12v power at this link
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Old 05-17-2014, 01:27 PM   #19
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There is "some" history on bent frames on Scamps and Casitas, (and maybe others) but with no exact causes cited. BUT... With two LP tanks and two batteries one would be adding a lot of weight.
On Scamps its mostly a history of snapped frames where the tongue frame is overlapped with the main frame and also at the point on the main frame where it has a curve in it - mostly seen on older trailers - 20 years or older and most probable caused by fatigue & rust.
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Old 05-17-2014, 01:54 PM   #20
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On Scamps its mostly a history of snapped frames where the tongue frame is overlapped with the main frame and also at the point on the main frame where it has a curve in it - mostly seen on older trailers - 20 years or older and most probable caused by fatigue & rust.
Didn't Norm have a well cared for Scamp, albeit with lots of miles on it, when he had a frame failure?
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Old 05-17-2014, 03:51 PM   #21
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The Battery from Walmart that has the 3 year replacement warranty - if they still have that warranty.
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Old 05-17-2014, 05:42 PM   #22
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Most of the power used by a CPAP is drawn by the humidifier. It uses almost 5 amps which will quickly drain your battery. Even setting the humidifier to "0" draws power as the thermoelectric device reverses to the cool mode. Thats how my Respironics works. They do offer a passover humidifier which I have yet to try. Google Respironics Passover Humidifier.
Jerry
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Old 05-17-2014, 08:07 PM   #23
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Didn't Norm have a well cared for Scamp, albeit with lots of miles on it, when he had a frame failure?
Yes he did but as said the trailer was well over 20 years old and has had *LOTS* of miles put on it in the last 4 years.
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Old 05-17-2014, 08:55 PM   #24
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how about dual 6V golf cart batteries?
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Old 05-18-2014, 09:34 AM   #25
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I run twin 6V golf cart batteries. They are powered exclusively by a 140W, roof mounted solar panel, and my TV's alternator. I only boondock, the only time I plug in is over the winter to keep things topped off. I'm using a xantrex 1000w inverter/smart charger instead of an converter. Four years with system now and the only problem has been a faulty solar panel. I've never run out of juice, in fact I haven't even switched to LED's, the sun powers my old incandescents just fine
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Old 05-23-2014, 09:26 AM   #26
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I have a couple of recent observations about Interstate vs Walmart for buying batteries. I have bought Interstate batteries for decades as an inherited habit more than anything. I loved the 3-year warranty program and more than once I was given a free replacement when I did something dumb to kill the battery. My current trailer was bought used and came with a Walmart battery. The battery was five years old this spring, so I had Walmart test it and it was time to replace it. They took it back for re-cycling, no questions asked, no fee. I went over to the Interstate dealer to buy a battery. The standard Group 27 RV/Marine battery was $40 more than the equivalent Walmart battery. The dealer told me that Interstate has now reduced the 3-year free replacement to 1-year on RV/Marine batteries because it was costing the company too much. They also were adding a $10 automatic fee for disposing of an old battery. I told the guy I didn't have an old battery, but the $10 fee was going to be charged anyway. The Walmart price started looking a whole lot better. I also looked in Sam's Club and they had a Group 27 for the same price as Walmart.

In defense of Interstate, I can't really blame them for cutting back on free replacement of batteries used in RV's. I am sure a lot of people were letting batteries sit un-tended in parked RV's and getting free replacements instead of learning how to maintain them. But the $40 price difference is just harder to justify now.
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Old 05-23-2014, 09:31 AM   #27
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Good Points Dave
While I too have used Interstate Batteries for years, the Biggie in the equation is still that you can always find a WalMart, and finding an Interstate dealer that is happy to take back a warranty claim just isn't as easy.
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Old 05-23-2014, 10:50 AM   #28
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Here, interstate is $80.00 and Walmart was either $60.00 or $70.00 (can't remember). Still haven't decided yet.

I think I'll go two batteries and an LP tank on the tongue with the option to switch out to two tanks, one battery depending on the camp.

1. Anyone see a problem with mounting the second battery on the LP tank platform (in the empty second tank spot, next to the other tank)
2. Does the battery have to be perfectly level?
3. Would it be foolish to tote the extra propane tank on a small mount off the bike hitch receiver on the back of the Scamp?

Thanks!
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