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Old 03-05-2021, 07:52 PM   #1
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Battery charging question

I have a 2017 Keystone Passport 199ML.
We will be doing the first big trip soon and will probably have to spend one night at a rest stop/walmart/cracker barrel type place.
If I leave the trailer plugged in to my 2019 Ram 1500, will the trailer battery continue to draw a charge from the truck while parked?
I'm worried about draining the truck battery if I leave it plugged in.
TIA
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Old 03-05-2021, 08:12 PM   #2
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One night - you will probably need heat. I would unplug just to be safe. With a small group 24 battery and a cool night you will be ok. But if it is cold a group 24 battery will not last all nigh running the power sucking furnace blower.

I tried one cold night in a rest stop and ran my small group 24 battery down so I woke up at 4:00am cold because my furnace quit working.

I would however guess a group 27 or the bigger group 31 would last all night. Again just guessing.
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Old 03-05-2021, 11:22 PM   #3
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I googled the charge line to your truck. It is active all the time. It can draw down your truck battery. You should unplug when parking overnight.
Google is your friend.
DUSTY
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Old 03-06-2021, 05:50 AM   #4
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Quote:
Originally Posted by tuffr2 View Post
One night - you will probably need heat. I would unplug just to be safe. With a small group 24 battery and a cool night you will be ok. But if it is cold a group 24 battery will not last all nigh running the power sucking furnace blower.

I tried one cold night in a rest stop and ran my small group 24 battery down so I woke up at 4:00am cold because my furnace quit working.

I would however guess a group 27 or the bigger group 31 would last all night. Again just guessing.
I changed to a group 31 before I left for Florida last December. The crappy interstate from the dealer never ran long. Got a Duracell deep cycle and new battery box from batteries plus for 157 dollars. I stayed 3 nights on a farm in Tennessee. It snowed and had 30 degree nights. It was plenty to run the furnace etc. Never went below 50 percent. Charged it a couple hours each night while watching TV.
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