I really like iced apple juice, but the ice was melting before I ever finished my drink. I was going through apple juice like crazy, but never really drinking much of it. I bought this personal fridge to cut down on wasting apple juice (don't like it all watered down from melted ice). It works so well, that I can fill a 12oz glass with juice, put in a few cubes of ice, and seven hours later, the ice has not melted. Think about it...seven hours! If I leave a glass of ice and juice out for 30 minutes, the ice has melted down to little bitty bits and the juice is too watery.
I used the "Mastercool MSC52224A Infrared Thermometer in Case with FREE MSC52220 Analog Thermometer" that I bought from Amazon to check the temperature performance. The manual for the mini fridge says that it is capable of cooling to 32 (deg F) below ambient. I checked it on a hot day, a warm day, a cool day, and several times between using the digital IR thermometer and it is consistently 32-45 degrees cooler inside the fridge than the outside temperature. Even on a 90 degree day the ice did not melt and I didn't have to replace my drink. The inside temperature at the warmest spot was consistently hovering around 45 to 47 degrees (F). My drink was at around 36 to 38 degrees, depending on where I measured it.
On the days that were around 70 degrees, this fridge read temperatures close to freezing. In fact, I was amazed when I pulled out a frosty glass of apple juice. It happened only once, but still...worth mentioning.
I think the trick to getting this to work optimally is to provide several inches of space for the back end where it vents out the heat. I used the thermometer there as well- the vent on either side exhausts at about 90 degrees (F) but at a low volume so it is not very useful as a space heater.
The unit runs quiet- very quiet. It comes with both an AC adapter, and a DC lighter-socket adapter for the car. The power switch has three positions- Off (middle) to the right is 110AC, and to the left is 12VDC (car). There is a single green LED to indicate ON operation, there are two warm air exhausts on each side at the rear, and two cool air intakes- one at the back plate, and one on the top at the aft end. This is why ventilation and spacing is important- due to the proximity of the hot air exhaust and cool air intake- there needs to be room for the warm air to dissipate and not be drawn in by the cool air intake. The manual says 6 inches space all around, I've found that about half that works in my situation.
I have not tried a six-pack, or tried using it in a car. What I can say is that if you like to have a cold drink handy to sip on all day while you study, this unit is worth every penny. I have not had to waste a glass of juice because it was watered down since using this unit- for that, 5 stars easily.
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Koolatron KWC-4 Coca-Cola Personal 6-Can Mini FridgeProduct Description: Keep up to six 12-ounce cans of soda or other favorite beverage cold and easily accessible with this mini fridge--great for getting through finals week or for staying hydrated when watching the big game. The compact unit takes up minimal counter space, and it makes a fun addition to any dorm room, workshop, game room, or bar area with its vibrant red exterior and white "Coca-Cola" trademark. Inside, it supplies a convenient shelf that removes for easy cleaning. The appliance cools up to 40 degrees below ambient temperature, and its self-locking recessed door handle closes securely. The 4-liter-capacity mini fridge measures 11 by 8 by 11 inches.
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