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Old 03-12-2016, 05:19 AM   #1
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RV Vent Fan on Batteries

How long can I leave my RV vent fan on at medium speed (#2) before my battery drains to 50%? I am safe to leave the fan on for 6 hours?

I have a 2015 Sunseeker 2300, everything is off except for the standard lights from the chagrin ports, Entertainment console and tv LED light. The fridge is running on LP.

Thank you
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Old 03-12-2016, 05:24 AM   #2
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The battery is running on LP........what does that mean??
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Old 03-12-2016, 05:25 AM   #3
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I meant the fridge is running on LP has.
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Old 03-12-2016, 10:34 AM   #4
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From a Google search, appears Fantastic Fan draws about 2.3 amps on mid-speed, 3 amps on high speed. Six hours would drain batteries about 15 amp-hours.
On our Solera with the factory installed dual size 27 batteries (about 200 amp hours total capacity) I have run the Fantastic Fan (with the fridge on propane ) that long a few times without a problem.
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Old 03-12-2016, 12:45 PM   #5
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I have a 2013 Sunseeker 2300 and have run the vent fan on low setting overnight with no problems. Now have a dual Interstate size 27 setup and don't give it a thought. I've upgraded all 3 vents to 3 stage Fantastic Fans and commonly use one "inflow" in the front an one "outflow" in the rear, sometimes reversed, overnight without a problem.

FYI. Factory batteries are junk. Maybe because made that way, maybe because of sitting unused at the factory/dealer. Doesn't matter which. They have a very short life!
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Old 03-12-2016, 12:55 PM   #6
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Quote:
Originally Posted by Airbornemp View Post
How long can I leave my RV vent fan on at medium speed (#2) before my battery drains to 50%? I am safe to leave the fan on for 6 hours?

I have a 2015 Sunseeker 2300, everything is off except for the standard lights from the chagrin ports, Entertainment console and tv LED light. The fridge is running on LP.

Thank you
Fridge on ( either mode) means control board drawing 12V current, CO.Propane detector on also.
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Old 03-12-2016, 12:58 PM   #7
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Quote:
Originally Posted by Airbornemp View Post
I meant the fridge is running on LP has.
Don't forget that even though you have the refrig operating on propane, it still is using a small amount 12v to run the refrig controls.
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Old 03-12-2016, 06:14 PM   #8
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Fan

I leave my FF running all day to vent the trailer. Never had a problem with a single 27 DEEP CYCLE battery. Last year I added a flexible 100 watt solar panel to the top of my 21DS, ran the cables down the awning support, into the storage compartment, then out to a 10 amp controller and to the battery. I have absolutely no power worries now! Works year round. Just top off the water before your first trip of the season and periodically during.
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Old 03-12-2016, 07:32 PM   #9
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I have to ask?

Quote:
Originally Posted by deebarjay View Post
The battery is running on LP........what does that mean??
What do a battery and Propane have to do with one another?
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Old 03-12-2016, 07:35 PM   #10
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Since you cleared that up?

Quote:
Originally Posted by Airbornemp View Post
I meant the fridge is running on LP has.
You should be able to run most any rv fridge for 8 hrs on your battery (if it is charged and in good shape when you start)
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