these batteries are getting better as technology advances, i wouldn't believe everything you read here....after-all were not talking about a mountain of cash for these batts......the E-Fest 14650 batteries work and are just fine and last about 1-1/2 hours longer than the reg 14500......you guys say whatever you want but i'm NOT convinced,,,,all-tho i do respect your opinions but i also have my own.....do what you want but in the mean-time i'll use my 14650's just for the extra vape time and when they drop i'll buy more.......good luck & happy motoring........