Thank you for your knowledge, this helps me big time! I don’t mind paying top dollar for cells but with so many unknowns and overrated numbers its hard to know which brands to trust. I did noticed the Efest took longer to heat up the flashlight then the 40T. I’ll stick to the 26650 cells because I would hate to damage the Mini. One quick question if you do not mind. Which 26650 cell do you recommend for the Mf01 Mini? Thank you again 