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Old 04-04-2016, 04:08 PM   #1
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Trailer battery questions.

Greetings.
I spent last weekend in Phoenix in my Palomino Puma, and had a great time! Was parked between 2 million dollar diesel pushers, both of which were having "issues" and here I am in my cheap little toy hauler and everything works! Anyway, I called my dealer but could not get a straight answer, so hopefully the experts here can help.
I have had class C's and diesel pushers before, and the "house" batteries were charged by running the generator, by being plugged in, and in one case, by solar panels. I THINK I understand that the battery for my trailer gets charged by the motor of my truck when it is being pulled, but does it also get charged by being plugged in to electricity? How about when running the generator?
Thanks so much!
Marcy
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Old 04-04-2016, 06:52 PM   #2
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Do you have a converter/charger? That would charge the battery when on generator or shore power. The batteries would charge from the tow vehicle if a charge wire is in the umbilical between the two vehicles. Does your trailer have a separate small 12v battery for the break-a-way brakes? If so, perhaps the charge wire only charges it, not the house batteries.

The simple way to tell about all of this would be to use a multimeter to read your voltages. A charged battery should be at ~12.7 v. To be charged, the voltage needs to be at least ~13.4 v. If you take a reading at rest, on generator, on shore power, connected to tow vehicle with engine running, you'll have the answer to all your questions.
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Old 04-05-2016, 04:55 PM   #3
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Quote:
Originally Posted by mlpmd56 View Post
I THINK I understand that the battery for my trailer gets charged by the motor of my truck when it is being pulled, but does it also get charged by being plugged in to electricity? How about when running the generator?
Thanks so much!
Marcy
Yes. (as long as the house batteries work the brakes)
Yes. (by the converter)
Yes. (by the converter, now powered by the generator)
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