What is the appropriate lumens per watt for LED car lights?
1 Answers
For automotive LED lights, a 35W model typically produces 3200 lumens, which is 91 lumens per watt. Generally, 80-100 lumens per watt is considered most suitable, but the specific choice should be based on the original car light's power and personal brightness requirements. Theoretically, higher wattage in LED car lights means greater power and increased brightness. However, in practice, higher wattage is not always better. If the wattage is too high, the power increases, leading to higher operating temperatures, which demands better heat dissipation. The operating temperature of LED chips must be kept below 85 degrees Celsius to ensure a lifespan of over 30,000 hours. If the LED wattage is high, the power increases, and so does the operating temperature. Once it exceeds 85 degrees Celsius, the lifespan of the LED light will decrease as the temperature rises. Additionally, since car circuits have a rated power, if the LED light's wattage is too high and exceeds the load capacity of the car's wiring, the wires may overheat and even burn out. In terms of luminous efficiency, LED headlights of the same wattage are brighter than the original halogen lights. LED lights can be categorized into different power ranges based on power consumption. Common single-unit automotive LED lights come in 10W, 20W, 30W, 50W, and 100W. Generally, a 1W LED light for household use is equivalent to an 8W incandescent bulb, while automotive LED lights are 2-3 times more powerful than standard halogen lights. Therefore, when replacing lights, it's unnecessary to install higher-wattage bulbs; only LED lights with the same or lower wattage as the original car lights should be used.
