I have ordered some
Thank you, I’ll be curious of your result 
It will be some time, I took the slow boat option.
At the given price for those lithium primaries I can buy a bunch of alkalines (a lot really), and if I were to worry I'd laminate them LoL.
In my experience I've rarely seen leaking alkalines, something which can happen to a very minor extent when AC recharging them, and their consecuences aren't terrible either. I've even had alkalines in vintage toys without issues, yet I preserve stuff well.
I really see no point in buying lithium primaries other than financing unworthy dubious technologies.
Cheers 
Hi HKJ,
I have bought a pair of these 16340 batteries and they perform surprisingly well and I wonder how they compare to the AW 16340 15C that you tested a few years ago.
https://eu.nkon.nl/rechargeable/14500-16340-18350-18490-18500/enercig-16340-700mah.html
I am interested in testing them, but I will not order just two of them due to shipping.
If there are a few more good ideas from nkon I will order, preferable batteries at 2800mAh or lower, that test station do not have a long queue.
I had a look around in the Nkon store but could not find any more interesting batteries to test.
Anyone else?
I'd shift a bunch of the batteries in the “above 2800mAh” test station queue to the “up to 2800mAh” one, at least in the meantime. O:)
Now that I recall the recent Turnigy Sub-C 5000mAh (Gray) review (likely the best sub-C cell in the market), I could suggest testing some of the prismatic cells being sold at HobbyKing to check their ratings' reliability and how good they really are. Mooch tested some of these packs in the past, he found exaggerated ratings but overall great power delivery performance. Just a small suggestion.
Oh wait! Just remembered I recently ordered KingWei 18350 1000mAh cells, will be conducting capacity and DC IR tests on them upon receipt. I'm not necessarily suggesting these, I believe they are the same 18350 cells currently being rewrapped by Shockli and BestFire, but their seller's Shop924810 Store has some interesting stuff worth looking at, imho. In store local searches are not working for me there. 
Cheers ^:)
1. Not everybody is that lucky with the alkalines as you, Barkuti :)
2. Lithium primaries holds voltage better during discharge. Sometimes, 1.25V of NiMH is not enough, but 1.85V of NiZn is simply too much, so a solution is always welcome to keep voltage around 1.5V for the most time.
3. For low drain devices, lithium primaries has a very long life expectancy (10-15 years+)
That may be true adam7027.
Ni-Zn too much voltage? While this may be true for some devices, I think most would probably take the surplus, it's not that much really (less than 1.75V for most of the discharge curve). Problem is that by the time you may notice the cells are discharged the designed to run with alkalines or carbon zinc appliance will have discharged them quite low.
Hi HKJ,
Love your web site. I didn’t see a Nitecore NL1835HP 3500 tested on it. I would be interested to see if it was as good as Nitecore claims. I have one in my HC33 and love it. Thanks! Mike 
Short answer: no. I may be wrong, but I really doubt it.
Nitecore does not manufacture li-ion cells, they outsource them from actual manufacturers, maybe add protection circuitry like in this case, button top, different wrap and exaggerated specifications. Maybe not by much, but lies anyway. Inside that “3500” NL1835HP probably is a Samsung INR18650-35E, LG INR18650-MJ1/M36, Sanyo NCR18650GA or Murata US18650VC7 cell. These are the cream of the crop in high capacity 18650s and none of them meet a 3500mAh rating. You can check some Nitecore cell reviews by Henrik and see why I say exaggerated ratings: Nitecore IMR18650 3100mAh (Yellow) 2018 (Samsung 30Q inside), Nitecore 18650 2900mAh NL1829LTHP (Black-yellow) 2018 (Panasonic cell).
Cheers ^:)
Thanks for the info!
Ni-MH enquiry: bought a couple Turnigy sub-C 5000mAh 7.2V stick packs recently and dismantled them, no loose pieces were available by the time. CC/CV mode charged them all in parallel up to 1.414V. Cells have been resting 4¼+ days and just measured their open circuit voltages. From lowest to highest, in volts:
- 1.350
- 1.361
- 1.363
- 1.368
- 1.370
- 1.371
- 1.372
- 1.374
- 1.376
- 1.376
- 1.377
- 1.378
Is this a wild self-discharge spread? I'm not too versed in Ni-MH stuff, right now I am charging up the cells in standard chargers and will assemble them in series. Did another sub-C pack in the past and after charging up all cells I first set all of them in parallel for voltage balancing, I wonder if this does really matter. 
Thanks for any tips.
I know some people will laugh on this, but I would like to ask for a review of a NCR18650B from GTF (yes, GTF).
I used to buy batteries from Liitokala and liked their cells, but they changed their shipping methods and screwed everything up ($150!). Then I found some NCR18650B from the “GTF Official Store”. I had already seen bad ratings on them, but nothing about this specific cell model, and since the price was the same of Littokala, but with cheap shipping, I bought it. Allow me to say that they look brand new, very well wrapped and have the same weight than Liitokala NCR18650B. They also get the same mAh ratings on the Lii-500.
Penta-legged/penta-lobed tops, cells likely manufactured by some chinese OEM (Shenzhen BAK probably).
The problem with this is financing a counterfeiting business model.
I had two doubts about this cells: is it original? and even if not, is it a good cell?
I looked pics of original flat top NCR18650B and there was not so many ‘legs’, so looks like my first question is answered. But the second one remains…
However, looking on the counterfeiting point, you guys can ignore my request.
Thank you anyway!
I have ordered two cells.
Time to add some interesting stuff here.
First of all I must admit I've been vaguely considering the purchase of some additional battery testing gadget, for affordable money of course (not in O:) a hurry). But I also like things to be good, powerful and even beautiful, so let me show you:
That looks like a lot of gadget for little money. I wonder if that can make discharge graphs, it looks like it is able or sort of.
I may be looking at the wrong :D stuff, but certainly looks interesting.
I also found quite inexpensive 16500 cells which look to be manufactured by Heter Battery: https://www.aliexpress.com/item/2pcs-lot-Free-shipping-16500-battery-1200mah-3-7V-Li-ion-rechargeable-battery-with-flat-top/32882185152.html
I have no particular interest in them but found them good candidates for a review given their price.
16500 is an odd battery format, what stuff uses this? They do fit in SK68 flashlights, but I seriously doubt they were designed with them in mind. Maybe for the small electric appliance market?
Cheers ^:)
100A, I doubt it, except for a short peak.
I have ordered both your suggestions.