Wow I'm surprised I didn't see this thread earlier. Let me add my "data" to the collective here:
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We bought a TB41/TF41 (sold by TruckFridge but badged as an Indel B TB) in June of 2014. Since then the fridge has been with us on about 32 camping trips. for a total of probably 70 or more nights (most of our camping trips are at least 3 nights.) Has been everywhere from Yosemite in California to Niagara Falls, Canada, from Big Bend in November to the high Rockies in July. the Black Hills, Washington State, etc.
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Overall we're very happy with it and wouldn't travel without it. I have had a few minor "issues" like the label/cover around the buttons peeling up, and I hate the way the lid is hinged (it should be hinged on the side, not on the end.) It did kill the battery in my old 4runner a couple of times but that was mostly my fault for not monitoring power usage.
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As far as power consumption goes I see a lot of the data is based on an assumption that the fridge would be set around 40 degrees. I have to
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a little at that because from my experience, setting the fridge at 40 is going to result in a lot of spoiled food and/or sick campers.
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This is because the temp sensor in the Indel B is apparently located in the coldest part of the fridge, i.e. the bottom. I keep a cheap metal fridge thermometer in the top of the fridge and it's not uncommon for there to be a 6 - 10 degree difference between the bottom and the top. And as for the little 'shelf' that sits above the compressor, that's probably 10 -15 degrees warmer. We usually use that one for eggs since eggs don't technically need to be refrigerated, but putting meat or cheese in that section would not be a good idea.
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Ours is normally set at either 32f or 34f (0 or 1c.)
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I'm actually quite impressed with the ruggedness of the fridge. We try not to let it bang around too much but we have gone on some mild 4 wheeling trips with the TB and it has done just fine. I think the lid has gotten a little bit chipped on one side and there are other scuff marks as well. We don't use ours on a slide but it typically sits in the middle of the folded down 2nd row seat so my wife can access it for a cold drink or a snack while I'm driving.
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Since we pull a trailer and often camp at places that have 'shore power', I carry a couple of heavy duty indoor/outdoor extension cords and if I have 120vAC power available, I plug the fridge into that to try and save wear and tear on my battery. Eventually I'll get my "house battery" installed on the 'Burb and that will be a less pressing issue.
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For the money I'd have to say the Indel B is hard to beat. Definitely gets a recommendation from me.