I would not want to even solder the cells using my 80W Weller monster which can solder 18650s in like 1.8 seconds. Without all the usual internal safeties in exchange for a lighter weight, I would not want that in a flashlight.
I do think however that these cells are the new Panasonic NCR21700C that were released to other OEMs, being 5100mAh nominal capacity.
The Tesla cells are probably the same cells, but without the safety features being excluded for external safety measures, to make the highest energy dense cell in terms of weight on the market.
You never know that
Strategic partner Panasonic may sell them under their own brand name. Or others may rewrap the cells.
But as Barkuti wrote there are better ways to spend your money than paying a heavy premium for a few mAh extra.
I tend to look at mAh/$ to a certain extent.
I like 18650 cells and will only consider a different size if the mAh rating warrants it. But right now that’s a theoretical discussion because I haven’t found a 20700 or 21700 light I like.
I tried searching NCR21700C again….without success. DDG: 0 results, bing: 0 results, google: lots if irrelevant junk
Could you give us some pointers as to places where we can learn more about it?
Sure a 21700 runs longer than a 18650. 4600mAh vs 3250mAh is the best tested cells I found.
That 41% extra power is the reason I read this thread.
But as I wrote, I haven’t found a nice 21700 flashlight yet.
if the same 10A discharge to 3.2V，
and sanyo A