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I did a thread on /csg/ detailing the ordering and build but i got some free high quality 16850 cells from a broken Hilti cordless drill powerpack and ordered a AU $4 dollar DIY 6 cell powerbank and "12000" lumen LED lamp for AU $12 and created this helmet based lighting system for my road and mountain bike
For the money it is fucking amazing. The beam has simply magnificent power and beam pattern. Sorry no night shots.