Hey guy's what's up just did a resistor calculater, calculation for red led and I thought I knew what to do but I think it may be wrong. So if I'm running a red off of a tri rebel on a battery that's 7.4 18650 should I need a 8.2 ohm resistor?
battery 7.4
led forward voltage 2.4
led forward current 700 ma
resistor 8.2?? ohm 4 watt capable
It throws me off because with single cell it was only 2.2 2watt capable.
I only ask cause that seems like a lot. also I'm under the impression the watts don't make the world of difference as long as you have the minimum watt capability, out of curiosity does it matter if I use 10w, 5w, 3w, 1w, as long as its at least the minimum.
Please help I got my blue and green good and don't wanna blow my red.
Thanks
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