To CSpence up above:
Thing about the TOOLvn--it's a wonderful light and a great WOW light. But the 10440 battery holds *very* little capacity. You are not going to be able to use it on anything like high for very long.
Part of the problem here is that Li-Ion makers lie about their capacities. I mean, I hate to put it so bluntly, but that's basically it.
So the top end for a quality 16340 IMR is going to be around 550mah, maybe 600mah, not the 700 that some print on their labels.
And the capacity of a 10440? No way is it 400mah. I will be amazed to see that any of them have more than 200mah, 250mah tops.
So you should figure that the 16340 format has about 3 times the capacity of the 10440 format.
Run times will be very short for the TOOL. A great back-up light, a great show-off light, but not the one to get you home.
Thank you! I honestly didn't really think about the practicality side of things in terms of battery life. I'll tell Ya, there are just too many choices from Vinh! I've been looking at the M30Cvn now...seems to be much more of a light, throw and flood, 18650, but likely a little big for EDC. And now that you mention the battery life, I imagine the 18650 would drain pretty quick on that light as well with the (3) emitters. Maybe I should just buy them all! If I could only afford that lol....