Can this actually do a sustained 800lm for 6 hours per the manufacturer spec?
I don’t think so. If you ignore the stepdowns in my runtime measurement and assume that it can maintain high level all the time, I’d say the total runtime at 800 lm will be more like 3 hours. Which is more or less what you get from the flood channel after the initial stepdown. Turn it on at turbo, wait 30 seconds for the stepdown and then you’ll get almost 3 hours at roughly 750 lm.