Thanks very much for your followup -
The “Storm of Ra” lamp looks quite phenomenal however indeed it’s gigantic (~20x20x16CM). The weight is not disclosed anywhere.
It’s tiring that all these >10,000lm-rated lamps actually step down to 1800 lumen or so, e.g. that’s what the Imalent DT70 does, Review: Imalent DT70 FloodKing (XHP70 Dedomed, 13k+ Lumens) .
I should therefore rephrase my question like this:
Which are the flashlights in the world below ~450 grams excluding batteries, that have the highest sustained light output?