This is one of a variety of LED panels using COB (Chip On Board) mounting of LED arrays. In this case the unit is designed to directly operate on 12V by using four parallel groups of LEDs wired in series to give a combined forward voltage of 12V (4 times the typical 3V forward voltage.)
Unfortunately this unit would pass an extremely high amount of current if used in a vehicle, as the alternator charging voltage is higher than 12V and while the panel drew about 350mA at 12V (4W) it increased to about 1 Amp at 14V (14W) and that results in the metal backplate getting very hot quickly. The inclusion of self adhesive foam strips to attach the lights to a surface doesn’t help much as the foam would provide extra thermal insulation.
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Post time: Jan-05-2017