I haven’t received mine yet, but I did want to see how it performed with the 4 different 26650 cells I have. The light is wired to have the cells in parallel, which is another thing I liked about it. I assume the Trustfire 26650’s would act as a single 4.2v 15,000mAh cell (rated mAh not actual) and simply share the 10 amp current load between each cell on HIGH mode.
The power output I come up with is, 10a*3.8v= 38 watt gross output.
Considering it’s rated to run on HIGH for 2-3 hours, depending on how good the cells are, I’d say on lower settings, this should be a real long runner.
This was the review HKJ did on the Trustfires, REVIEW TR26650