Go Back   iRV2 Forums > CAMPING, TRAVEL and TRIP PLANNING > Boondocking
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 04-02-2014, 11:54 AM   #1
Junior Member
Join Date: Apr 2014
Posts: 8
Running Fans Overnight

We just purchased our "new to us" Class C MH (Itasca Sundancer)
This winter we have a trip planned for two weeks in South Florida. The CG does not have any hookups and you may only run your generator during certain daytime hours. With all that said, we would like to know in "your" experience can we run a 12VDC or 120VAC Fan (average size 20") for 10 to 12 hours off the house battery? It is likely that we would also run a few LED lights for a couple hours at night as well. In the morning I assume we would run the generator to recharge the batteries. There are two Batteries under the steps , I'm not sure of their size.

mikev63 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 04-02-2014, 12:08 PM   #2
Senior Member
Tony Lee's Avatar
Join Date: Sep 2012
Location: Tasmania now, USA/Canada/Alaska in April
Posts: 2,416
Hard to be specific because those batteries may be on their last legs and have little available capacity. Also depends on what charging setup you have. Some rigs have charging from the engine alternator but that is often not good enough to get the batteries more than 3/4 charged after a long drive. Some rigs have fixed voltage converters rather than decent chargers so that also may limit how much charge you can get back in by running the generator for a couple of hours.

Best bet is to sort it all out before you leave home. Run the generator for two hours and then switch the fans and lights on and monitor the battery voltage using a digital multimeter over the next 12 hours. Then repeat the process by running the generator for another 2 hours and then fans and lights.

This will give you a very good idea of what to expect and whether your system can cope and how many hours a day you need to run the generator bearing in mind that the less hours you run the generator, the more friendly your neighbours will be.

Running a 12V fan might be slightly kinder to the batteries because usual inverters drag from 1 to 2 amps when they are sitting there doing nothing but again, any comparison depends on the exact types of fans you use.

Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
Tony Lee is offline   Reply With Quote
Old 04-04-2014, 09:46 PM   #3
Senior Member
dons2346's Avatar
Country Coach Owners Club
Join Date: Dec 2010
Posts: 4,778
Inverters will draw 10 amps to make 1 amp of 12VAC. It make no sense to use 120VAC fans. You should be able to make it overnight with a 12VDC fan.

The number of batteries means nothing unless you know the amp/hour rating of them.
dons2346 is offline   Reply With Quote
Old 04-06-2014, 07:52 AM   #4
Junior Member
Join Date: Apr 2014
Posts: 8
Thank you for the comments , I will give your suggestions a try.
mikev63 is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Running Generator and House AC on road AKJohn Class A Motorhome Discussions 55 05-24-2014 03:17 PM
No power to coach unless RV is running dvleemin Class A Motorhome Discussions 9 03-27-2014 07:33 PM
Running Aqua Hot in enclosed garage overnight? fun time Class A Motorhome Discussions 12 03-07-2014 04:44 PM
Fridge fans update- Max Hubrich RV Systems & Appliances 4 11-18-2013 09:01 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:02 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.