I eventually chose to go the ARB fridge route a short while ago. The initial investment hurt however Im happy to have the option of being "ice free", although there isnt anything better than an ice cold beer covered in ice. Im running it with a CTEK D250S dual battery "charger" that sits between my stock start battery, and two-22ahr batteries wired in parallel, I had laying around in the garage. I eventually want to replace the 44ahr with something better, mounted under the bed. The current 44ahr batteries run my fridge, 12v water pump, and a few other usb and 12v outlets behind the seat of my '12 Tundra Crewmax. What I like about the CTEK (or similar product), is it not only isolates and refines the charging of a dual battery set up, but it also has the option of connecting a solar panel, giving you another option to charge both your batteries when the vehicle isnt running. Ive actually left the fridge in the truck for several days with no solar panel connected. It maintained temp, and never turned off (CA mild weather).
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