Thanks for the report DBCstm. Please keep us updated.
One of the lights I plan on using these cells in is my Rook. I get tired of fiddling with the 14500's and these are close to the capacity of 3 of 14500's. Plus, I have other lights the 14500's can go in.
3 at 4.21V 1 at 4.20V, put the last 2 on just now. I have no idea how to compute any of that, but it took 2 hours and 17 minutes at 1A charge rate.
In my modded M3, an Efest IMR18650 2200mA cell will allow 4.28A. One of these charged up will allow 4.13A. Not bad! 
I received 2 more today. I don't recall even seeing new 1700mAH 18500's for sale anywhere, usually 800mAH off-brands. This seller ships fast. 
Has anyone tried adding a protection circuit to cells? I see FastTech has them. I'd feel more comfortable with protected cells in my 4 cell UV light.
That's an interesting mod. How are you going to bore it out? Will you need contact plates at both ends?
Not sure how it should be bored out. I think I better ask some gurus for advice on that. I'm guessing a drill at high speed in a drill press and moving slow. Not much material needs to be removed. So I could just use a curved file if I had too. The driver takes positive in the center pad. So no mod needed on the driver side. Probably just drop a floatng plate in the bottom on top of the springs so that I can remove it to use 14500's.
Any one figure out the date code on your cells yet? I wouldn't be surprised if they are fairly old, but one can hope they are not.
Mine are sitting at 4) 4.19V 2) 4.20V after some 9 hours of rest time. So they seem to be fine.
I just cracked mine right now, all 12 of them are identical to the Sanyo 1620mah 18500 I bought on fasttech for $11 for 2. IMO I have no doubt they’re Sanyo, wish I could buy more but just have too much already. This is a great bargain! Thanks for sharing again GJ
Great news. This is sounding like a real winner of a deal.
Kind of funny, but not really. I figured if this place had such a good deal on an older style laptop battery then I’d give em a shot at the battery in my old laptop. I have a quite old Sony Vaio that I cannot get rid of because it is the only computer that will sync to my older Pro Canon Camera, which is the only way to change some of the settings in that camera.
They have the battery pack, a very small pack by most of todays standards. It’s $44.95 and 39.99 shipping! 
Haven't found any info on the date code yet.
They should have left that whole space open and slightly deeper, with a variety of carriers it would have been as versatile as the SD10.
Awesome. I didn't realize it, but my laptop batteries showed up yesterday. Quickly broke down a pack and have 2 on the charger now. I see not date code imprints on the cells. The batteries was packaged in what appear to be the original manufactures box and packing. There is probably a battery pack date code somewhere in this:
Repair Parts
Stock No: P00043574028095146
Description: Battery Pack G71C00054210
101 1A3C3401 - 0001
Bar Codes:
*G71C00054210*
*28095146*
*P000435740*
I will do discharge tests on one or two cells today. The cells arrived with voltages ranging from 1.8+ to 2.2+ volts. The two on the charger now are staying cool.
All my triple AAA lights are getting those cheesy battery carriers thrown into the battery drawer. Since each one of these cells is about equal to 3 AAA's, I now need 36 less Eneloops (I bought 2 laptop packs). Now I don't have to avoid 3AAA lights that are too short for 18650's anymore.
I haven't found a plastic adapter yet that works with these. So I'm going old school for now:
That’s one of the Defiant 3xAAs, right?
What are you using to wrap the batteries (can’t tell)?
For 18500s, I’ve been using these, cut in half (so I get two 18500 wrappers for each one of these):
Yes, you are spot on. No, the Defiant 3 AAA two packs. I know you can mod these Defiants to squeeze a 18650 cell, but I would like to not go through that and also keep the AAA compatibility. The adapter above is from the cardboard tube from a paper towel roll.
Thanks Ohaya for the link to that adapter. Looks good. Are they snug fits or is there some play?
EDIT: Edited first sentence. Just noticed you said AA, not AAA.
I meant the 2 pack 3xAAA :)….
The FT tubes have a little play, so they’re not really tight. Here’re some pics with an Eagletac 18500:
In the 2nd pic above, you can see some white “space” between the battery and the tube, I think.
Looks pretty good. Some of the adapters out there are way too loose. Those look like they probably wouldn't slide and rattle when the cells are under spring pressure. Thank you for the pics.
I was going to say that (“wouldn’t slide and rattle when the cells are under spring pressure”), but didn’t want voice the opinion :).
I just tried that same battery+tube in one of my Defiant 3AAAs, and it’s ok. If I shake the light “violently”, I can “feel” some “thudding”, but no sliding or audible “rattling”.
Then again, the springs on the Defiant 3AAA is pretty weak, as you probably know :)…
You shook one of your lights violently? I'm turning you in to FPS (aka Flashlight Protective Services). Haven't you ever heard of Shaken Flashlight Syndrome? You should be ashamed of yourself.
One cell has been discharge tested after its first charge. Came in at 1655mAh. Looking good. Thank you Gj for reporting these!
I don’t understand how you all are getting these so fast. I ordered on 10/3, and they still aren’t here (in VA). Maybe it’s because I also bought one of the 12-cell packs?
EDIT: The “violent” shaking was on your behalf, so I should be ok, right?
For little ole me? I'm touched. At least that's what others say.
I discharge tested another cell after its initial charge. This one was 2 volts out of the pack. Discharged at 1 amp down to 3 volts resulted in 1697 mAh. Can't complain about that. Discharged it further down to 2.5 volts, but only got an additional 11 mAh's.
I forgot to say above that the first cell I tested came out the the pack at 2.2 volts. Discharge test above was also 1 amp down to 3 volts.