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4x 194 168 5-SMD White High Power LED Car Lights B...

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10x 194 168 2825 5-SMD White High Power LED Car Li...

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2.5" HD Car LED IR Vehicle DVR Road Dash Video Cam...

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Fuloon (TM) 7 Color LED Under Car Glow Underbody S...

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2 Pcs Super Bright White Car 6 LED Fog Daytime Day...

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korek api
 
Today's Discussion

What happens to a car led connected to a 9 volt battery?
Im using a car LED i bought and i want to connect it to a switch and a 9volt battery. I think the standard for LED is 12 Volts? Will it burn out quicker or not be as bright? and do i need a resistor? THankss :)

Reply
Ira
It will either be dim or possibly not be enough voltage to light it at all. LEDs run on 3-4v, It will already have a resistor in it somewhere to run at 12v.

Johannes
LEDs have no standard voltage! that can range from 1.6 to 4V. But you do have to limit the current through them. This why it is a bad idea to connect an LED directly across the battery terminals. Current is limited by a resistor normally. As yours is for a car, there should be a resistor suitable for 12V in series with the LED somewhere. If you reduce the voltage, the current will be reduced and hence the birghtness will be reduced.




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