Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > iRV2.com General Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 02-13-2016, 01:16 PM   #1
Senior Member
Join Date: Aug 2013
Posts: 210
1000 Watt Inverter and a Residential Fridge

Just ordered a 2017 Coachmen Mirada 35BH - It has a 18cuft Residential Fridge. My reading indicates there is a 1000 watt inverter to drive fridge. I am used to have LP and Electric powered Fridges. I have 2 coach batteries but my question is how long can the coach batteries run the inverter for the fridge. I am more concerned about driving all day without the generator running or multiple days without being connected to shore or generator power.

Any thoughts around this? Thanks in advanced.

Mickey Alberto
2016 Georgetown XL 350TS
Sour Lake, Texas
cmalberto 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 02-13-2016, 01:35 PM   #2
Senior Member

Join Date: Aug 2011
Posts: 3,337
1000 Watt Inverter and a Residential Fridge

While driving, your engine alternator will supply power to the batteries, which are supplying power to the inverter to run the fridge.....so it can do this indefinitely.

While not connected to shore power, you will probably need to run the generator 2 hours in the morning and 2 hours right before "quiet time" begins to keep the batteries charged.

If you want to boondock without power for days in a row, consider getting more batteries and a solar system to recharge those batteries.

pasdad1 is offline   Reply With Quote
Old 02-13-2016, 05:53 PM   #3
Moderator Emeritus
Gary RVRoamer's Avatar

Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,632
Lots of variables, so a "crisp" answer isn't possible, but probably 16-24 hours. Other 12v consumption, ambient air temperature, how often/long the fridge door is open, etc. are all major factors.

The fridge probably uses about 1.2-1.4 kilowatt-hours (KWH) daily. That's about 100-120 amp-hours from the batteries, or about 50% of the capacity of a pair of golf cart 6v's. Since you shouldn't use more than about 50% without recharging, that roughly a days worth of use. However, lighting, maybe some tv, and miscellaneous small 12v power draws will cut into that.
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 02-13-2016, 06:14 PM   #4
Senior Member
Join Date: Jan 2007
Location: Bermuda Islands
Posts: 274
The weakest link is the battery bank. How many usable ah s do you have? Are the batterys a pair of 6V golfcart, 12V group 24s, 12Vgroup 27, maybe even 12V group 31s?

Bets are, the dealer will install the cheapest i.e. a pair of 12V group 24s.

How long the power will last depends on you. Leave the door closed & it will last the longest time. Stand there with the door open sightseeing & the fridge has to work harder restoring cold air killing the battery bank much faster.

Don't rely on the truck to put a big charge into the battery bank as you drive along either. Much depends on the size of the alternator. Also the size of wire & length of run from alternator to trailer batterys makes a difference. The thicker the wire & the shorter the run, the better.
Home: Bermuda
US RV base, MD
2007 Alpenlite 34RLR
Triangle Drifter is offline   Reply With Quote
Old 02-13-2016, 06:31 PM   #5
RVM 18
okmunky's Avatar

Solo Rvers Club
iRV2 No Limits Club
Join Date: Feb 2011
Location: Fulltimer, SD resident
Posts: 7,978
If you plan to dry camp often, you may want to rethink the residential fridge.
Barb (RVM18), Sena (capuchin monkey, RVM Head Mascot) & Lily (Maltese/Yorkie)
2011 Shasta Cynara 230F, 2012 Smart Car toad, 372 watt solar FMCA #F466348
The Journey is Our Destination. Full-timing since 5/18/2011 - no end in sight
okmunky is offline   Reply With Quote
Old 02-13-2016, 06:31 PM   #6
Senior Member
Ranger Smith's Avatar
Join Date: Jul 2012
Location: Where the Rig is Parked
Posts: 976
I have a residential in my Winnebago and it has a 2800w inverter and 6 agm house batteries.
Steve and Joy
2012 Winnebago Tour 42JD
Where We Are Now
Ranger Smith is offline   Reply With Quote
Old 02-13-2016, 07:06 PM   #7
Senior Member
Join Date: Jul 2014
Posts: 11,746
With the residential refrigerator you want to make sure the dealer installs some decent batteries.

I would call Coachmen and ask what they recommend for batteries. Then make sure the dealer installs them.

Your chassis has a 175 amp, heavy duty alternator, so keeping the batteries charged should not be a problem.

While parked without shore power, a few hours generator time in the morning and at dinner should be all you need to keep the ice cream hard.

If you plan on a lot of boondocking, a battery monitor is a good investment.
twinboat is online now   Reply With Quote
Old 02-13-2016, 07:42 PM   #8
Senior Member
Join Date: Aug 2013
Posts: 210
Thanks everyone...you gave me a good idea of what to expect. I don't really plan to dry camp and I do have the Generator when needed to help out the batteries. I guess I was thinking about driving down the road primarily but we do plan to leave the coach plugged in but what if we are away for a week or so and lost power. Things to know...Thanks again.
Mickey Alberto
2016 Georgetown XL 350TS
Sour Lake, Texas
cmalberto is offline   Reply With Quote
Old 02-13-2016, 10:35 PM   #9
Senior Member
mojoracing's Avatar
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Oct 2013
Location: northern IL
Posts: 2,557
The dealer is not the one that installs the batteries. The manufacturer, in this case, Coachman is the one that installs them. If he wants to upgrade them that would be up to him. Do your research and find out what brand, type and number of batteries will work best in your configuration.

2014 Fleetwood Bounder 35k
mojoracing is offline   Reply With Quote

fridge, inverter

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
Inverter power for Residential Fridge lacdubonnet RV Systems & Appliances 11 05-04-2015 12:30 PM
Heartland Gateway 3650BH Residential Fridge jayhawkclint 5th Wheel Discussion 3 03-06-2015 08:05 AM
Residential Fridge dedicated inverter, or not? Smitty77 Going Green 4 02-14-2015 02:29 PM
Need an Inverter for my Residential Fridge Go Dawgs RV Systems & Appliances 8 10-15-2014 04:57 AM
Cotek ST1000-112 1000 Watt Inverter RV-Co-Pilot RV Systems & Appliances 0 07-07-2014 04:59 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:08 AM.

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