Home

   Log in or Register



Insurance Quotes
forums Campsite Search Comp Directory tips virtual brochure Profile
Tent and Awning Reviews Competitions Caravans and Motorhomes For Sale Shopping Diary Advent Calendar

Advertisement

Message Forums

Welcome Guest Register Login Search The Forum Posts Since Last Visit
 Reception - All Forums
  Camping and Caravanning Equipment
Share   Post on X / Twitter  Share on Facebook  Email  Printer Friendly Version Print
Subject Topic: 12v cool box voltage sensing Post Reply Post New Topic
via mobile 16/4/2020 at 9:45am
 Location: Shropshire
 Outfit: Swift Challenger 570 2010
View beachhuggy's Profile View Profile   Reply to beachhuggy Reply   Quote beachhuggy Quote  
Joined: 05/10/2011

Silver Member
Silver Member

Forum Posts:   178

Site Reviews Total: 4
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 0  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 0
Site Nights 2018: 0

Hi
Does anyone know of a 12v cool box that has voltage sensing built in to it so would turn itself off if forgot to unplug from 12v aux socket in the boot of the car?
Or would it be possible to piggy back off the voltage sensing relay for the towbar electrics fridge supply wires and fit a second aux 12v outlet in the boot??

-------------
Love my caravan too much...


16/4/2020 at 9:56am
 Location: 
 Outfit: 
View Francais's Profile View Profile   Reply to Francais Reply   Quote Francais Quote  
Joined: 29/6/2008

Diamond Member
Diamond Member

Forum Posts:   12115
Tent Reviews:   1

Site Reviews Total: 4
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 1  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 14
Site Nights 2018: 0

Yep, you need the Waeco Voltage Protector M50U, you can find cheaper variants on eBay, but I found the Waeco worked perfectly.

Just check the current rating on your device, so not to overload the Waeco protector.


via mobile 16/4/2020 at 2:30pm
 Location: Gods Own Country
 Outfit: vango Nadina
View andy monty's Profile View Profile   Reply to andy monty Reply   Quote andy monty Quote  
Joined: 07/3/2015

Gold Member
Gold Member

Forum Posts:   342

Site Reviews Total: 1
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 0  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 0
Site Nights 2018: 0

Also be aware many newer (euro 6 cars) have some smart regenerative braking system so the car runs the battery voltage down only engaging the alternator when slowing to charge the battery so many of the charge detection units do not let the fridge run due to perceived low battery voltage


17/4/2020 at 9:09am
 Location: 
 Outfit: 
View Francais's Profile View Profile   Reply to Francais Reply   Quote Francais Quote  
Joined: 29/6/2008

Diamond Member
Diamond Member

Forum Posts:   12115
Tent Reviews:   1

Site Reviews Total: 4
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 1  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 14
Site Nights 2018: 0

Of course the OP was asking for a cool box that already has built in battery protection, the only one’s that I am aware of are the Waeco Tropicool models, which I think have now been branded Dometic, to be fair though the Dometic Tropicool TX35 which is basically an over priced thermoelectric cool box, is about the same price as the Mobicool FR40 which is a proper compressor portable fridge, and does of course also have built in battery protection.
Mobicool is also a brand from Dometic.

Probably the best solution if the OP want’s to keep the budget below £100 is to buy a cheapo electric cool box from Aldi or Lidl, and add the Waeco protector or similar as I first mentioned.


via mobile 17/4/2020 at 9:28am
 Location: Shropshire
 Outfit: Swift Challenger 570 2010
View beachhuggy's Profile View Profile   Reply to beachhuggy Reply   Quote beachhuggy Quote  
Joined: 05/10/2011

Silver Member
Silver Member

Forum Posts:   178

Site Reviews Total: 4
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 0  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 0
Site Nights 2018: 0

Have found out that the 12v aux power outlet in the boot of our X Trail turns off 5 minutes after switching off engine and becomes live when engine starts or door is opened.
It is like this apparently for the exact reason of stopping items draining the battery when left plugged in.

-------------
Love my caravan too much...


Advertisement



17/4/2020 at 10:39am
 Location: 
 Outfit: 
View Francais's Profile View Profile   Reply to Francais Reply   Quote Francais Quote  
Joined: 29/6/2008

Diamond Member
Diamond Member

Forum Posts:   12115
Tent Reviews:   1

Site Reviews Total: 4
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 1  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 14
Site Nights 2018: 0

Wow beachhuggy, I would find that feature quite annoying, in fact when I had a VW Golf 17 plate, the 12v to the in car sockets would go off when the engine was of, easily fixed though on that car by simply moving the 20amp fuse one slot along in the fuse box, this then provided the 12v in car sockets to be live permanently, it was very handy to be able to do this simple mod, as not only did it allow me have our Waeco CF25 fridge running in the car over night, I was also able to use my Ring RAC700 compressor with the engine of.


17/4/2020 at 1:10pm
 Location: London
 Outfit: Lunar Cosmos 524
View Monty15's Profile View Profile   Reply to Monty15 Reply   Quote Monty15 Quote  
Joined: 17/9/2015

Diamond Member
Diamond Member

Forum Posts:   2335

Site Reviews Total: 1
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 1  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 6
Site Nights 2018: 0

Quote: Originally posted by Francais on 17/4/2020
Wow beachhuggy, I would find that feature quite annoying, in fact when I had a VW Golf 17 plate, the 12v to the in car sockets would go off when the engine was of, easily fixed though on that car by simply moving the 20amp fuse one slot along in the fuse box, this then provided the 12v in car sockets to be live permanently, it was very handy to be able to do this simple mod, as not only did it allow me have our Waeco CF25 fridge running in the car over night, I was also able to use my Ring RAC700 compressor with the engine of.



My old Citroen C5 had the same option to swap fuse to enable permanent 12v supply, sadly my current Citroen C4GP doesn't seem to have that option, and yes it is bloody infuriating when you only get a few minutes of power before system automatically shuts it off!

It's less of an issue with my Campingaz electric coolbox, because the inbuilt battery protection circuit would turn it off anyway within a few minutes of turning the engine off. It requires about 14v from the supply, and that is only available with the engine running. Electric (Thermoelectric Peltier types) draw quite a high current (5A or more) and quickly drag the battery voltage down as it discharges.

beachhuggy, my Campingaz electric coolbox is quite old and has been superseded by newer models branded Coleman, which don't seem to mention the battery protection feature, but there certainly used to be a number of boxes on the market that had inbuilt battery protection. It's a pretty essential feature (made slightly redundant by modern cars cutting off 12v supply when/soon after engine stopped!) as a uncontrolled coolbox will kill your car battery stone dead in a few hours!



In order to post a reply you will need to register, or if already registered please log in here

Prev       Next
Quick Links - All Forums - Camping and Caravanning Equipment - Top of Page

Printer Friendly Version Printable version      Share   Post on X / Twitter  Share on Facebook  Email


Latest News, Discounts and Competitions  see all...














6118 Visitors online !

Free UKCampsite.co.uk Window Sticker  -  Recommend to Friend  -  Add a Missing Campsite

[Message Forums]  [Caravan Sites & Camping]  [Company Listings]  [Features / Advice]  [Virtual Brochure]  [Shop!]
[Reception]  [Competitions]  [Caravans & Motorhomes For Sale]  [Event Diary]  [Contact Us]  [Tent Reviews



Please note we are not responsible for the content of external sites & any reviews represent the author's personal view only. Please report any error here. You may view our privacy and cookie policy and terms and conditions here. All copyrights & other intellectual property rights in the design and content of this web site are reserved to the UKCampsite.co.uk © 1999 - 2024


Advertisement


Advertisement


UKCampsite.co.uk
2024 Advent Calendar


Advent Calendar

24 Daily Prizes PLUS a Christmas Day Star Prize worth £999

Request a Reminder