I installed these in an old fluorescent lamp for replacement in the workshop. Each strip consumes 9.117 watts at 12 volts. Be careful with high voltage, when you need brightness, there will be overheating or undervoltage. install on metal strip as heat sink for better LED performance. The power supply can not be too small or too big in size or voltage. I will return to LED life later this year. Then I hot glued it on, the glue is bad (3M Corp Junk), they won't stay in place very long. Installs 1620 LEDs 120 volt input power 240 watt 12 volt output maximum all with spotlight. They heat up FAST without a radiator! LEDs don't look that warm 7-20-2021Update At 10.5 volts to 9.5 volts these LEDs will work just fine with no problems as heat will damage them. At 11 volts and 13 volts they get so hot that they are difficult to handle unless heated on a strip of metal and they will then quickly burn out. Without an accurate voltmeter, a quarter volt makes a difference in longevity. Therefore accuracy is MANDATORY.
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