Truckfridges come in three sizes with either 1, 1.5 or 2 cubic feet of storage capacity. The smallest and middle sized ones would probably fit in many teardrop galleys. The biggest capacity one may not because its the tallest. At 23" long they are shorter than many ice chests.
They're powered both by AC and DC so you could plug one into a 12 volt socket in your car or truck and at a campsite with AC hookups. With a good battery you might go camping for a weekend just on battery power. With the right sized solar collector too you could keep your food and "pop" cold for an extended trip. I like that food would not get soggy from melting ice. Nor would you need to take time away from camping or burn gas to go buy ($) ice. Maybe you could buy your food and "pop" on the way to your camping destination.
A lengthy favorable discussion begins at http://www.expeditionportal.com/forum/threads/81797-Truck-Fridge-sale-Prices-only-visible-in-checkout Four wheelers bouncing over back country roads and trails would be much harder users (abusers) of the coolers than most any teardrop camper would. These may be a good buy for a fridge that is sized right for teardrop camping.
Post #27 in the Expedition Portal discussion:
by 77volvo
Consumption
The Truckfridge/Indel B 50l consumes .7w when the compressor is not running, when the compressor is running on ECO my amp meter says 3.5a/44w and on MAX 5.7a/71w. Although I did not record the totals consumed, my 50l performed well, connected to 40w (labelled), actual 25w peak output measured, of solar panels and 2 - 12v 100 amp deep cycle batteries over 9 days. I set up the fridge and panels the afternoon of 8/11, and disconnected them on the morning of 8/19. Temperatures during the day were up into the 90's, but down to the lower 60's at night, and I had the thermostat set at 34. The lowest the battery voltage I observed was 12.05v, and the milk was still cold when I loaded up to head home.
TruckFridge.com sells three sizes at http://www.truckfridge.com/store/page6.html.
Both the TF31 and the TF41 would probably fit easily in a teardrop galley.
TF31 SALE PRICE $399.00
Great for traveling, camping and all outdoor activities.
Portable, top opening fridge/freezer
13 ¾"W x 14 ½"H x 23"L
1.0 cu. ft.
DC 12-24 Volt / AC 115-230 Volt / 50-60 Hz
TF41 SALE PRICE $499.00
Great for traveling, camping and all outdoor activities.
Portable, top opening fridge/freezer
13 ¾"W x 17"H x 23"L
1.5 cu. ft.
DC 12-24 Volt / AC 115-230 Volt / 50-60 Hz
The taller TF51 might be a tighter fit.
TF51 SALE PRICE $529.00
Great for traveling, camping and all outdoor activities.
Portable, top opening fridge/freezer
13 ¾"W x 20 ½"H x 23"L
2.0 cu. ft.
DC 12-24 Volt / AC 115-230 Volt / 50-60 Hz
On 3/5/2014 I called Truck Fridge to inquire about the dimensions. The lengths above do not include the handles. With handles they are about 28" long, The handles are detachable. I was told they stock hundreds of the fridges.
Westy Ventures http://westyventures.com/index.html sells Truckfridges too: http://westyventures.com/parts.html
They are another Truckfridge seller mentioned in the Expedition Portal forum. With free shipping they may cost less than buying from Truckfridge.com once shipping is added on.Choose the fridge option you'd like from the menu below. Shipping, as always, is free within the lower 48!
Evacool Evacool-usa.com appears to be another brand of the same refrigerator/freezer. They have a (pdf) brochure with photos and specifications that is helpful: USACOOLMATE You can print a copy.
bold addedAVERAGE CURRENT DRAW ON 12 VOLTS Internal Temp 40°F External Temp 70°F Approximately 0.7 amp hour/hour
Disclaimer this is information I found on the internet. I do not vouch for the sellers. Do your own homework before buying.