Can a 3.3v LED be used with 2 AAA batteries without a resistor? Answered
I want to make a torch with a 3.3v super-bright LED (used for case modding) with a 25mA forward current. The power source will be 2 AAA batteries (~1.5v alkaline) connected in series to make ~3v. Is a resistor required, and if so, what is the colour code/value?