I have them, they seem pretty good for the price. Full power to 3A 105c no problem.
I have the 16340’s version too, also good but time will tell on these.
I didn't know about those. Since I'm in the United States, I'd rather pay less and get them quickly by ordering IMR14500's from Illumination Supply or Mtn Electronics. Those two companies have made ordering new batteries from overseas almost entirely pointless.
Well Fasttech (and I am not flaming them) they sent me some 18650 Fires. I knew what I was getting into. They weighed about 1/2 what they should!
Also, they don’t hold voltage well at all. They will drop to 3.7 volts, when a compared to a REAL 18650 that will still be sitting at 4.1 after being fully charged and sitting for about a week.
So buyer beware.