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Old 06-14-2008, 05:13 PM   #1
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tow vehicle charging tt battery

I'm new to this site so forgive me if this has been discussed somewhere before. I'm wondering if anyone out there has tried using this type of device:

http://www.powerstream.com/DCC.htm

It solves one major problem of trying to charge your TT battery while in tow. As many have found, the tow vehicle alternator is a long ways from the TT battery and thus there is considerable voltage drop. Many report only 12.0-12.5 volts getting to their in-house battery. This is not enough to charge the battery completely.

I've seen many attempts to solve this but the DC-DC device above seems to do the job. I can run on 10-15 VDC input and has a well-regulated (smart) output circuit.

My only complaint about it is the 7.5A limit on output current. This is plenty to charge a battery but not enough if you want to also run some things in the trailer while towing like the refer at the same time.

Has anyone used this type of device or know of one with more capacity on the output? I want a smart device like this one that knows how to charge the particular battery technology and then maintain it at full charge.

Just connecting a solar panel up to trickle charge sounds good, but it is not the best way to get peak performance and lifespan out of a battery. A good AGM battery can run $150-$200 or more. I want to get my money's worth out of it. A high-output solar setup is $$$$.
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Old 06-15-2008, 08:13 AM   #2
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It's funny that you posted this thread because to day I am going to install a Radio Shack brand 350 watt inverter to operate my refridgerator while making a 10 hour trip. this way I will not have to deal with propane. The inverter is going to be wired directly to the breaker panel for the supply voltage and then I am going to install a receptical in the service panel of the refridgerator so I can unplug the refridgerator from it's factory installed receptical into the one I am installing while traveling. I see where some people are having problems with voltage drop, well from what I found out is that if the wiring is too small this is where the votage drop occurs, it's suggested to use 12/2 solid cooper wire as a min.
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Old 06-15-2008, 09:04 PM   #3
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Yeah, propane is dangerous while travelling.

I know a few people who have gone the inverter route. It is not a bad solution but you still have to buy a charger.

Wire size is very important. But even using #10 as one friend has done did not solve the voltage drop. There is still a drop within the tow vehicle. There is just no way to get enough voltage to the tt battery using wire alone.
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Old 06-24-2008, 05:24 PM   #4
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my TV keeps my battery pretty well fully charged, when unhooked from the TV, the camper battery meter says fully charged. Did this on a 12 hour trip. Works good enough for me.

You can read exhaustive posts on the suppose dangers of traveling w/ the propane on. I'm not going into that discussion here, everyone has their own opinions.

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Old 06-25-2008, 07:20 AM   #5
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my TV keeps my battery pretty well fully charged, when unhooked from the TV, the camper battery meter says fully charged. Did this on a 12 hour trip. Works good enough for me.

You can read exhaustive posts on the suppose dangers of traveling w/ the propane on. I'm not going into that discussion here, everyone has their own opinions.

-Mark
Same here. No issues with my TV not keeping the battery charged during a trip while running stuff.

And yeah. We WILL NOT get into the propane/no propane while towing discussion here at FRF. You want that discussion go over to that RV. something or another.....
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Old 03-21-2013, 01:33 PM   #6
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Holy moly!! Came across this old thread only to discover that aintgotnun has over 80 million posts!!!!!
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Old 03-21-2013, 01:46 PM   #7
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Holy moly!! Came across this old thread only to discover that aintgotnun has over 80 million posts!!!!!

Thats 36,000 a day !

And he hasnt posted since 2010
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Old 03-21-2013, 04:03 PM   #8
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We fixed aintgotnun's counter. Good thing it was still under warranty!
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Old 03-21-2013, 04:17 PM   #9
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^^^^funny!!!^^^^

As the moderators can see, that good ol "search' tab works!
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Old 03-21-2013, 04:23 PM   #10
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We fixed aintgotnun's counter. Good thing it was still under warranty!
How does that happen ?
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