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Old 07-29-2015, 01:42 PM   #1
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Using 12v from coach to power Patriot?

Reading several threads about dead batteries from people using the Blue Ox Patriot toad brake, I want to come up with a way to keep the toad battery charged.

I'm thinking of running a line from the umbilical 12v hot to a 12v outlet that would only be used to power the Patriot. The biggest draw is the brake system, since the lights are powered from the coach. The only load the toad battery would power would be the brake lights when the system is active. I will install a fuse at the front end.

Anyone have a reason why this won't work? The alternative is to run the line to the battery to keep it charged, but without some additional hardware I don't want to do that.

The toad is a '14 CRv, I'll probably add a Wrangler soon as well.
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Old 07-29-2015, 01:51 PM   #2
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Slolane-- before doing this, I would just try your Patriot in your toad a few times and see how things work out. I used to have a Patriot and I towed my Jeep Wrangler for trips that were normally 1-5 hours, but sometimes as long as 9 or 10 hours. I never had trouble starting up my Jeep after even the longest drives.

The Patriot has a battery inside it and it uses that battery first. It only uses your toad battery if the internal one is drained down. So the trick, if there is one, is to start a long trip with a full battery in the Patriot. Incidentally--it charges by the same power cord. So I did, on one occasion, drive around in my Jeep a day ahead of a long trip with the Patriot system sitting on the passenger floor, not powered up, but plugged in so that it could charge. I have no idea if this really had any marked effect, or if I would have been totally fine without doing it. I only tried this once, and in hindsight, maybe I was overthinking it.

So my advice is to try yours first and see how it works. Carry a set of jumper cables just in case. I doubt that you'll need them unless you are traveling really long hours, your toad battery is compromised to begin with, your toad has a lot of parasitic draw during tow, or some combination. But you won't know until you try it.

If you do discover that your toad battery is drawing down too much, I would personally not do as you planned, but instead just run the appropriate wiring to your toad battery (yes, with a little expense for the appropriate hardware) and be done with it. That seems to kill two birds with one stone--you'll have a freshly maintained toad battery upon arrival, regardless of whether or you had a Patriot system or not.
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Old 08-07-2015, 01:47 PM   #3
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Patriot System

I have towed my Honda Civic Si for two 7 hour days in a row without drawing down the battery. I even hooked up my charger on the second day and it was beeping full charge before I walked away from it. After the first year I used the aux line from the coach to charge the battery just in case. If you have a 7 pin outlet you will have a pin for it. You will have to add a http://www.amazon.com/BrakeBuddy-393.../dp/B004RCXB8A
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Old 08-07-2015, 03:19 PM   #4
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Just install a charge line from the toad side plug and fuse it near the battery.
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Old 08-08-2015, 10:16 AM   #5
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Google: Towed Charge System

That said: I'd dump the patroit,, I do not like having to install my brake system EVERY TIME I TOW as it makes it far too easy to make a mistake or just "Oh forget it" on a short tow.

I'd go with something like the US-gear system or Invisible brake, both of which are supposed to maintain towed battery as you drive. (though I think the US_Gear unified brake decelerator does a way better job.)
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Old 08-08-2015, 11:58 AM   #6
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Quote:
Originally Posted by Slolane View Post
Reading several threads about dead batteries from people using the Blue Ox Patriot toad brake, I want to come up with a way to keep the toad battery charged.

I'm thinking of running a line from the umbilical 12v hot to a 12v outlet that would only be used to power the Patriot. The biggest draw is the brake system, since the lights are powered from the coach. The only load the toad battery would power would be the brake lights when the system is active. I will install a fuse at the front end.

Anyone have a reason why this won't work? The alternative is to run the line to the battery to keep it charged, but without some additional hardware I don't want to do that.

The toad is a '14 CRv, I'll probably add a Wrangler soon as well.
I suggest to keep it simple. The battery in the CRV is grossly undersized. Go to your Honda dealer and buy a new battery box for an Odessy and install a new group 24 battery with 800-900 CCA and your problems are solved.
If you plan to run for over four hours, install a charge line through the umbilical cord from the MH battery to the toad battery with a fuse on each end.
I guarantee you will not have any more dead battery issues.

Dead Battery on Honda CRV

See my post #16 in this link.
Do you pull fuse on 2013 CRV?
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Old 09-04-2015, 09:29 PM   #7
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I had a problem with the Patriot saying the "car battery low" when tying to use the motorhome umbilical (to light a wire gauge/to long of a pull). Ended up using the toad battery without issue for a 3 hour tow
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