Where do I find myself the NTC (is that soft start?)Like vicv said; Mag 3C with FM G4 socket, KD aluminium reflector & glass lens. Phillips 20 or 30W G4 halogen. Run that on 2x 21700s & with an NTC in the tailcap to prevent the bulbs from blowing on full batteries (I learned that the hard way from members here). You can also use a 10W for more modest (but still bright) output & better runtime. Very practical setup with long throw.
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With 7388 20W