LED flashlight 16 lamp can change a need for what?
A LED, plus 5V (4.5V nominal) voltage, can be connected in series with a 200 ohm resistor!
You have to know the real output voltage of the 16 led, and I believe that the 16 LED are not all connected in series with the power of the LED flashlight. They may be strung together by several groups in parallel.That's a lot easier to know.
Instead of one, it's not so bright
16 beads are in parallel, namely every beads are working independently, the advantage of this is that a lamp is broken, the other can have normal working lamp! That is to say, you only need to add the 5V voltage at both ends, basically can drive lED lamps, the voltage value is not too high, the nominal value is 4.5 5V!