[Review] Astrolux S42 4xNichia 219C Rechargeable Mini LED Flashlight supplied by Banggood

[zak.wilson (Zak)]

@mud_muncher

Just curious…. If it is pulling 10amps of the 30q (9.95amp) and say the nominal voltage at that current is 3.8v on a full charge isn’t that around a 38w torch? Why is it only rated at 1630lm? even with the “less efficient” lumen output of the 219c it should be close to 3000 lumens? Even at that level as there is 4 emitters so each is not being pushed really hard.

maukka tested the efficiency at 48lm/w on the ~450 lumen mode. That’s atrocious efficiency. It probably uses a really crappy FET.