On my sabers, on a straight connection and on a Hasbro O-B-1 board I used no resistor. Because when I did, it just dimmed the heck out of the LED. And on all the diagrams I looked at, they never say the ohm or v needed. But with no resistor I get a bright light. I used the diagram from cardcollector's tread. The 3.7 - 6V set up with no recharge port. I needed no port cause the batteries come right the bottom of the saber. I'm using a 3.7 V 18500 Li bat. So I'm guessing if I go higher with my voltage on the power. Like two 14500's I may need one. Am I right or what. Some help please masta, I know not what I do!
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