Good Sam Club Open Roads Forum: Tech Issues: 12 volt Refrigerator
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > 12 volt Refrigerator

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next
camper_ron

Raynham, MA

Senior Member

Joined: 01/09/2001

View Profile



Good Sam RV Club Member

Offline
Posted: 04/21/22 04:41pm Link  |  Quote  |  Print  |  Notify Moderator

Looking to purchase a small moterhome to go to Alaska. Some of them have exclusively 10CU 12 volt Stainless Steel Refrigerator. I have no information or experience with this type of refrigerator any help would be greatly appreciated.
Thanks !





bikendan

Goodyear, Arizona

Senior Member

Joined: 11/21/2005

View Profile



Good Sam RV Club Member

Offline
Posted: 04/21/22 05:09pm Link  |  Quote  |  Print  |  Notify Moderator

camper_ron wrote:

Looking to purchase a small moterhome to go to Alaska. Some of them have exclusively 10CU 12 volt Stainless Steel Refrigerator. I have no information or experience with this type of refrigerator any help would be greatly appreciated.
Thanks !


You'll need solar panels of at least 200w and an upgraded battery bank, if you plan on dry camping or Boondocking.


Dan- Firefighter, Retired">, Shawn- Musician/Entrepreneur">, Zoe- Faithful Golden Retriever(RIP">), 2014 Ford F150 3.5 EcoboostMax Tow pkg, 2016 PrimeTime TracerAIR 255 w/4pt Equalizer and 5 Mtn. bikes and 2 Road bikes

corvettekent

Marysville, WA

Senior Member

Joined: 09/21/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 04/21/22 05:45pm Link  |  Quote  |  Print  |  Notify Moderator

You would be much better off with a propane refrigerator.


2022 Silverado 3500 High Country CC/LB, SRW, L5P. B&W Turnover Ball, Companion Hitch.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT and four 6 volt batteries. Samlex 2,000 watt Pure Sine Wave Inverter.


theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 04/21/22 05:58pm Link  |  Quote  |  Print  |  Notify Moderator

corvettekent wrote:

You would be much better off with a propane refrigerator.

That is debatable ! You could be in big trouble if you run out of propane and there is no refill station nearby.

With adequate solar and batteries a 12V compressor refrigerator is far superior to any propane evaporative refrigerator, especially when the outside temps are in the 80s or above.

I certainly would have a generator, even a 2000W portable. Also a DC-DC charger.

3 tons

NV.

Senior Member

Joined: 03/13/2009

View Profile


Offline
Posted: 04/21/22 06:06pm Link  |  Quote  |  Print  |  Notify Moderator

Well, to save propane I would lean towards the compressor refer, but only IF you have a sufficient battery bank of at least 400 usable amp/hrs and a minimum of 400w solar…By ‘usable’ I mean Lithium (meaning LiFePO4…), a Lithium compatible SOC (state of charge) shunt- based battery status meter (so you can accurately arrive at true SOC), and that you understand how to charge them…

This latter item simply means, not to exceed 14.6v, no equalizations (as required with wet cell types), and once charged, not to leave them on the charger for an extended period of time…And since the voltage plateau remains nearly constant and flat, there’s no real need to keep them fully charged (as you would normally strive for with acid wet cell types)…An ‘occasional’ full charge is all thats really needed, this just to allow for periodic cell re-balancing…Also, (upon edit) know that Lithium cannot be charged if below 32d/f ( but can be safely discharged down to about -04d/f) so there are different strategies used to address this issue such as, interior mounting, heated basement, batteries with built-in charging heaters, or external, retrofitted electric battery blankets…

3 tons

* This post was last edited 04/21/22 07:36pm by 3 tons *   View edit history

Sandia Man

Rio Rancho, NM

Senior Member

Joined: 08/09/2008

View Profile



Posted: 04/21/22 07:41pm Link  |  Quote  |  Print  |  Notify Moderator

Depending on who you ask there pros and cons just like residential and absorption fridges when used in RVs. If you are plugged into shore power you should be good to go unless unit is faulty. Do not know personally if they consume more power as compared to same size 120 volt fridge, but if without power hookups upgrades to replenish consumed amphours will be needed. Many manufacturers at least give options on fridge choice, 12 volt/120 volt are less costly, we prefer absorption for RVing.

I guess we have been lucky over 3 decades as as all our Dometics and Norcolds have performed well across 6 different RVs, it is well over 80 degrees today and I was just out in our RV and had a big glass of Coke with ice from the freezer, even 95+ degree temps have been no issue for our Norcold 4 door fridge. Without a doubt the biggest issue with absorption fridges is improper installation, on a few RVs I made modifications to both interior and exterior of fridge greatly improving cooling efficiency.

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 04/21/22 10:28pm Link  |  Quote  |  Print  |  Notify Moderator

An adequate solar system mated with a dc to DC charger and some excellent batteries.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 04/22/22 02:31am Link  |  Quote  |  Print  |  Notify Moderator

Sandia Man wrote:


Do not know personally if they consume more power as compared to same size 120 volt fridge, ...

This is really the question that needs to be answered !

In both case (12VDC vs 120VAC) the DC battery voltage is inverted to AC and stepped up. 12VDC refrigerators actually use a 3 phase motor which is more efficient than a typical 120VAC motor.

Personally, I camp in warm weather, 70°F and above. My next RV will have a compressor refrigerator !

valhalla360

No paticular place.

Senior Member

Joined: 08/19/2009

View Profile



Good Sam RV Club Member


Posted: 04/22/22 06:20am Link  |  Quote  |  Print  |  Notify Moderator

If you are doing a lot of boondocking (ie: no shore power), I would lean toward propane but the industry is moving towards 12v fridges.

With 2 full propane tanks, going a month or two without refills is very realistic, so not a huge burden for most to keep them full.

That said, with a decent battery/solar system, it's quite workable to go 12v.

Ignore people who simply pronounce a size for the solar array and battery bank. Do an assessment of your consumption and production capabilities. While the fridge is a major consumer of battery power, there are other items along with how you expect to live while boondocking. When someone pronounces 200w solar, that might be overkill or it might not be enough.

Also consider where you will be camping. If it's in dense forest, solar is not very useful.


Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV


jaycocreek

Idaho

Senior Member

Joined: 12/28/2013

View Profile


Offline
Posted: 04/22/22 06:25am Link  |  Quote  |  Print  |  Notify Moderator

I have two portable ac/dc fridge/freezers,and Engel(most efficient) and an Iceco..They easily run for a week on a 100ah LP battery in refer mode..One 100 watt panel keeps one,charged..Right now I am experimenting with one in freezer moder(0 degrees) and one in refer mode(32 degree's) with one 100 watt panel..On a sunny day it barely keeps up replacing used AH,on cloudy days usually two 100 watt panels are needed and sometimes it takes three 100 watt panels to do so..But it does and two of my 100 watt panels are portable..

I am at 20% this morning on my primary battery with a cloudy day forecasted..Rather than mess with portable panels I will just hook up my 10 amp Norco charger to get it back abone 50%..

So yes you can run a DC refer off of solar if you choose one that is easy on the power,not a power monger..The 10cf I saw use about 84 ah a day,that is way to much for me and my setup needing maybe 400 watts of solar at a minimum..


Lifepo4-380ah/Lithium NMC-140ah/Solar-400 watts/Wagan & Giandel PSW/Engel & Iceco 3-1 compressor fridge freezer/5K Window AC/Honda 2K

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next

Open Roads Forum  >  Tech Issues

 > 12 volt Refrigerator
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.