Thanks for all the hard work, fran. Great information.
As a general comment on DD: They've been caught multiple times selling fake cells. This is just a further watchout dealing with them.
Yes, my opinion is that the UltraFire cells that I received from DinoDirect are fake…. 
( I mean, not manufactured by UltraFire)
I have had UltraFire cells before, and they have performed similar to the TrustFire, but in those days I didnt have the Imax, so I couldnt test them….
They must be very bad cells to die in less than 2-3 months with normal usage (not forcing them)
Hi!
Interesting tests.
I add, that, all my UltraFire cells seems to work perfectly, I have been using some 18650, 14500 and 10440 since about 2 years ago and none has failed.
I beleive that the ones DinoDirect sent to you are fake.
I was one of the bad lucky customers who received fake TF flames some time ago…. DD is prone to ship fake batteries… I thought that it was an isolated case regarding to the TF Flames… but now… I see also happens with the blue UF cells. Too bad. I will not buy batteries from DD anymore.
My 2 cents…
Wow… Thanks for the job… This is a really helpful thread… Thanks again…
I have two panasonic from 2006 with a lot of charge, when I get my hobby charger I will do the same test and post it here…