Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Display Modes
Old 06-16-2017, 12:17 PM   #1
Join Date: Jan 2017
Posts: 64
26DBH Dual Battery Setup

Does any one have 2 12v batteries connected parallel to their trailer? If so, when plugged into shore power is your fan on power converter under the fridge is on if the batteries are fully charged. Mine doesn't seem to turn off. Which is annoying when trying to sleep at night. Trying to see if that's normal.
leonards is offline   Reply With Quote
Old 06-16-2017, 12:24 PM   #2
Senior Member
JustB_Rad's Avatar
Join Date: Jun 2015
Posts: 677
If you're plugged into shore power and your batteries are fully charged, you could install a battery switch and turn the batteries off when you're hooked up. Everything will work fine.
2016 Grey Wolf 26DBH following a 2014 RAM 1500 Outdoorsman

Life is good...Live it!
Nights Camped - (2014) - 16 in 6 trips (2015) - 20 in 6 trips
(2016) - 21 in 7 trips
(2017) - 12 in 3 and going seasonal for at least the rest of the year!
JustB_Rad is offline   Reply With Quote
Old 06-20-2017, 06:16 AM   #3
Senior Member
Join Date: Aug 2015
Location: Stafford, VA
Posts: 600
I think the converter that supply's 12v to your lights and other 12v systems is running. So my guess is the fan is keeping things cool down there. Also it is supplying a trickle charge to your batterys.
2015 silverback 31IK
2015 Chevy 3500HD
kcmusa is offline   Reply With Quote
Old 06-20-2017, 07:50 AM   #4
Join Date: Jan 2017
Posts: 64
I can't remember, if in the past the fan only turned on if the battery power was low. The converter would then bulk charge the batteries causing the fan to run on to cool down the converter then stop once batteries where charged.
leonards is offline   Reply With Quote
Old 06-20-2017, 08:00 AM   #5
Senior Member
Join Date: Jan 2015
Location: Englewood FL
Posts: 2,593
If this has not happened before, I would check the output of your converter. After a while, when the batteries are fully charged, it should drop down to 13.6 or even 13.3 volts to maintain the batteries and supply other loads in the coach. If the fan is running it may be stuck on high voltage, which is bad, or you may have a big load somewhere that is taxing it.

2015 335DS
ScottBrownstein is offline   Reply With Quote


Thread Tools
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

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -5. The time now is 08:15 PM.