There's a bunch of 12v fridges and freezers out there, all you have to do is a google search, or search this board! Most of them ARE much more efficient than the 110v models, but they come at a cost. $$$-wise, expect at least double the price. You may luck out and find used ones on EBay, but all you have to do is search!
Here's a couple links just in this board:
Reducing fridge motor start current:
http://www.fieldlines.com/story/2008/5/23/115041/076
Stirling Cycle Refrigeration:
http://www.fieldlines.com/story/2008/4/30/151834/419
Try clicking on "Search the Board" on the top-right menu of the main page here, then type "refridgeration" or "refridgerator". It turns up so many, you'll be reading and following links for hours. Even at $500 more than a 110v model, the cost savings of $500/$30per year savings pays back in 17 months. Not to mention, it could be run with even the smallest of RE systems like 1 HF panel set @ 45watts, and 1 - 100-120Ah battery.
I just wish I could afford even $30 for some magnets to make a small genny!
Rural McG
