see, 18650batterystore.com lists Nitecore, I have the Nitecore D4 charger, but I dont think they make battries, but they got a good name for the great charger, so could let someone use the name on UtraFire...? anybody bought them.

What batteries are people buying, you must have bought some, fake or not, are they ok?

I pulled a Ultrafire battery to bits, then after I seen how it was made I threw it in a bucket of water :) almost blew a hole in the metal bucket... so see you learn not to get them wet? and I think those people who use unregulated box mods are mad :)