Moderator: Luke
mcroson wrote:well if its the 212 model i think they have a watt draw of 125 watts
so 125 watts divide by 12 volts = 10.42amps say 10.5amps
so if your 110ah battery is fully charged and in good condition
110 ah divide by 10.5amps = 10.47 hours so say 10 and half hours
but all depends on battery condition and charge.
I was going the same route with the 3 way fridge, so went to our local caravan service center and got the same as above, glad I didn't bid on one on evilbay looking for a 12v coolbox now, some nice ones knocking around now, as good as a fridgepippin wrote:This sort of fridge depends on heating the refrigerant for cooling to occur.
They are wildly inefficient as more heat is wasted than is actually drawn out of the food/beer/whatever inside the fridge.
The 12V element generally draws about 10A and is not really up to the job of keeping the fridge cool unless it has previously been used on gas or 240V to chill it right down first.
They cannot be used on gas when driving along.
If used on gas then the installation has to be done strictly in accordance with safety regulations. The rear of the fridge has to be totally sealed off from the interior of the van to prevent combustion fumes (esp CO) from entering. The area at the rear of the fridge should have a gas drop vent in the floor. The gas cylinder has to be in a sealed locker, again with a gas drop vent in the floor.
You would be better off scrapping the 3-way and using a simple 12V thermoelectric cold box.
For real efficiency fit a 12v compressor fridge, but that will cost a few bob to buy.
These 3-way caravan fridges are designed to run very effectively on gas, with 220ac being a close second where available. The 12v provision is only there to help hold the temperature while driving. The gas tends to blow out at 50mph .I never bother now with the 12v, as provided the fridge is cold to start with and the door isn't opened, it usualy stays cold for quite a few hours driving. If I stop for any time, then I fire up the gas to give it a boost.dingdangdo wrote:I was going the same route with the 3 way fridge, so went to our local caravan service center and got the same as above, glad I didn't bid on one on evilbay looking for a 12v coolbox now, some nice ones knocking around now, as good as a fridgepippin wrote:This sort of fridge depends on heating the refrigerant for cooling to occur.
They are wildly inefficient as more heat is wasted than is actually drawn out of the food/beer/whatever inside the fridge.
The 12V element generally draws about 10A and is not really up to the job of keeping the fridge cool unless it has previously been used on gas or 240V to chill it right down first.
They cannot be used on gas when driving along.
If used on gas then the installation has to be done strictly in accordance with safety regulations. The rear of the fridge has to be totally sealed off from the interior of the van to prevent combustion fumes (esp CO) from entering. The area at the rear of the fridge should have a gas drop vent in the floor. The gas cylinder has to be in a sealed locker, again with a gas drop vent in the floor.
You would be better off scrapping the 3-way and using a simple 12V thermoelectric cold box.
For real efficiency fit a 12v compressor fridge, but that will cost a few bob to buy.
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