I have exactly two of these cells. I bought them when I got a VN modded light (since dead) as he said that my AWs might not provide enough current. They've been lightly used for a few years in an EDC light. Below is my Amazon review of them.
[/FONT][FONT="]Not reliable. Had a bit of a scare the other day, was surveying a job site and had to walk a utility tunnel. I had a battery case in my back pocket with spare cells in it for my EDC flashlight,which is a Sunwayman V11R, and before I went in I popped in one of these cells that I had charged up days before so I would have a completely topped up cell. It was one of these Olight cells, lightly used, maybe 2 years old. My light went out after only a few minutes and I had to walk a couple hundred yards back to the door by the light of my cell phone screen. Bit of a pucker moment given the state of disrepair of the building this tunnel was under. Today I put the same cell (recharged) in a Surefire 6P with a Malkoff Nichia 219 drop in along with an AW RCR123A (it's a 2x123 or 1x17650 light) and set a timer when I turned it on. It lasted just about two minutes before kicking off. I recharged and put it in my EDC and it didn't last a full minute. I've had the other Olight cell that I bought at the same time in the Sunwayman V11R turned all the way up and it ran for about 17.5 minute before kicking off (not sure if it was the cell or the light that went into protection.) So if I'd had the two cells reversed when I was at that job site I would never have had any issue, but I shouldn't have to worry about this. Lessons learned: 1) next time I do this I'm carrying aforementioned 6P so I have TWO lights with me (and let's be honest, I should have done that in the first place, I trust a light lego'd from all Surefire and Malkoff parts a lot more than I do Sunwayman, good as the Chinese are, there's something to be said for people I can call on the phone if I have a problem, who cares if I look like a cop with a great big light on my belt if I'm actually safe) and 2) I'm now stress testing all my cells before I go into a mission critical situation with them. I'm not quite paranoid enough to give up and use Surefire primaries for everything, but I'm getting close. Definitely I'm spending the evening going through my collection of lights and cells and making sure that every cell gives an appropriate runtime in the light for which it's intended, I don't need a repeat of that fecal show.[/FONT]
[FONT="]On the flip side, the other of the pair that I bought a few years ago seems to work well. Had I kept that one in my flashlight when I was walking that tunnel I might have been OK. As I say above it had over 17 minutes runtime on the absolute highest setting so that I consider to be acceptable for the light it was in. However, I also just tested an older, more used AW brand 16350 in the same light and it had just about 25 minutes runtime on the same setting, so from now on I'm hoping Andy is going to release more of these cells because they are clearly superior to the Olight ones. As of right now, I trashed the questionable one of the pair as it cannot be relied on and will keep an eye on the other and will only use it as a backup to my AWs.