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I originally bought a different brand, which lasted about 2 minutes before it burnt out serving a power load below its rated capacity. This one works and has not failed. It does get hot. And although you may think those ridges on the sides are metal heat sinks, they are just plastic decoration. The entire case is plastic, with just a few air holes. So if you can provide some airflow to help cool it, you should do so. I am using it to power a thermoelectric cooler, so I place it next to the cooler so the cooler fan blows on it. That helps.
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Original Review -This converter works fine and gave new life to an old car stereo in my grandparents garage. Yes, like the other reviewer mentioned, this adapter is only rated for 6 amps rather than 10, but the description has been fixed now. The converter doesn't run hot while in use and the green power LED is a nice touch. However, I think that the build quality could be somewhat better, the top and bottom of the casing is warped pretty noticeably.
Update -
About a year or so after I wrote this review, I replaced the incandescent lights in my grandparents garage with fluorescent lamps. Unfortunately, whenever I would turn on the new lights, the car radio that was being powered by this converter would pick up interference from the fluorescent lamps. It would completely overpower any FM or AM station, and could even be heard when playing a CD or when using the auxiliary input. It seems this converter has very poor or no filtering. I have since switched to a Pyramid PS15KX 10A 13.8-Volt Power Supply with Cigarette Lighter Adapter, which does a great job at filtering interference and outputs more power as well. However, considering the extra expense, bulk, and heat output the Pyramid offers, I would still recommend this converter to someone who will not be powering any devices that are susceptible to RF interference.
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