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Title: Failed after 5 minutes
Review: Very disappointed. I installed the heater, plugged it in, it heated for approximetly 5 minutes and quit heating. I thought maybe it was thermostatically controlled, so I parked it outside in 15 degree temperatures overnight. The next day I felt the battery and the heater and they were not any warmer than the ambiant temperature. The heater worked for about 5 minutes and failed.
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