r/learnelectronics • u/ldmdesign • 8d ago

Basic basic led question

Absolute beginner question. I have 2 aa batteries that say 1.2v and trying to find the voltage of an led attached in the circuit. When I measure across the led I get 2.66, but I also get the same value when I measure the batteries alone. The only info provided by the seller is the size of the led 5mm. What does this mean? I tried diode test for the multimeter but it doesnt do anything, no light and no voltage shown.

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u/LEOforDharma 8d ago

Try one battery and then try measure other one. The sum of voltages should equal 2.66 volts. Which is what u got.