I'm building a stupid flashlight with a 30Watt LED chip. I plan to use 6 18650 cells, 3 in series and then two clusters of those in parallel, so the input voltage I have to work with is between about 9 and 11V. Is there a (cheap) step-up voltage regulator that I can buy that can handle 30V, ~1A output at those input voltages? Everything I've found so far is either too expensive, non descriptive or of questionable Chinese quality.
Last edited: