I have built Jaxman E2L with Nichia 219C sm503-D240-L1-R9050 and LD-B4 9Amp 17mm constant current LED flashlight driver. The biggest challenge was to solder everything on MCPCB, especially a small transistor. Also I had to sand the MCPCB to get it to fit in the light. After first try I checked MCPCB with multimeter and there was a short, so I sanded it “upwards” (so top black layer is folded towards leds) and it helped. The hole in the shelf was also drilled to fit more wires. Everything togheter produces a beautiful tint. According to this review it should make around 2400 lumens at 9 amps and 2000 lumens at 7 amps. At 7A (2000 lumens) stepdown occurs after 70 seconds in room temperature. It’s a bit dimmer than D4, but at least output can be sustained for over a minute and even longer outside in lower ambient temperature. There are beam shots and skin (?) shots in the album.
