I contacted Neal about the On The Road 16340 battery.
He was surprised when i said they were one of the best (high capacity and current), ad asked for some more test results.
So i’m looking for test results, can’t remember where i saw reviews of that battery.
Maybe it was a Youtube review, i’ll have a look in my ‘watch history’.
But i think it would be great if Neal could source those cells (either with or without the OTR wrapper).
Maybe you guys can help finding test results.
I recall seeing something on David Sunshine channel, in his review of the OTR M3! Can’t be sure (and can’t check now as I’m not on the computer)!
Yeah, that’s where i got the high capacity measurements from.
He says it’s 799 mAh.
But another (more recent) review i just watched says it’s 600mAh.
So now i’m not so sure anymore… :person_facepalming:
By the way, i got 4x “PKcell” 16340 in yesterday, they seem to hold up fairly well in the M3.
I will try to do some tests later.
These are 2 reviews that analyse the battery. The first one is about the OTR U16, and the second about the M3.
Maybe it was here you’ve seen it?
Also, a quick insight on the battery’s voltage, in their branded charger: ENEDED .
And this post from The Miller about the capacity: Are these OTR M3 runtimes normal? - #7 by The_Miller .
Last week I sent PM to Neal asking about the same thing, about if he sells good 16340’s!
To not overload him with PMs and all that stuff, if you are in contact with him, can you take care of this and them return with some answers, please?
I’d be interested to get some good 16340s and of the OTR is one of the best, and he can arrange some, let’s do it!
Yes, please tell something about those too!
I ordered a 16340 flashlight (Jaxmnve M3, on AliExpress) and wanna buy some cells. But can’t be sure if the PKCell are good or if I should try the Trustfire IMR. So, if you have some insight on those, let us know please 
I still use a few aw 16340’s (red ones) not the best but working fine in all of my highish drain 16340 lights.
I received the two Lumintop 16340 batteries purchased from AliExpress as well a couple of days ago. Will pop them in my Liitokala Lii-500 charger to check capacity.
That’s great.
When you pop them into your M3, do you visually see a difference in light output between high and turbo?
Okay, so i did a NOR test on my Lii-500 with the 4 PKcells.
They’re all around 700mAh, may improve a little because they were brand new.
The internal resistance guestimate of the Lii-500 are inconsistent wild guesses, so it doesn’t mean too much, but it seems these PKcells are a little better in that regard than Sanyo 14500.
I think these PKcells are similar in performance to their 14500 cells.
My M3 draws 2.28 A on ‘turbo’ (according to my UNI-T clamp meter) with a freshly charged PKcell,
with a ‘half full’ cell (3.6 Volts without load) it’s 2.24 A.
with a 3.5 Volts (without load) cell it’s 2.05 A on the clamp meter.
So this is where it apparently starts to suffer from the sag too much. 
I will calculate the internal resistance now, i’ll get back to you with that.
Just remembered the Windyfire brand market its cells by themselves: http://www.windyfire.com/windyfire-imr-16340-600mah-3a-button-2pcs.html
http://www.windyfire.com/windyfire-imr-16340-600mah-37v-3a.html -> In the past you had to ask for a cheap shipping quote. They may still do it for those of you outside of the countries listed in the above link.
Cheers 
And the plot thickens 
Thanks for the test Jerommel and the heads up on their site Barkuti!
Let’s see if the PkCell and the Lumintop worth a try. It they are nice, why not?
If they are not, Windyfire may be an option…or the Trustfire IMR…or the AWT IMR…or the On The Road :person_facepalming: :person_facepalming:
Okay, i calculated the internal resistance of one of my PKcells, i think i did it right.
The Voltage of the cell was 3.5 V without load.
I put on a load with a 1.35 Ω resistor, giving a Voltage of 3.2 Volts over the resistor, I=U:R so the current was 3.2 V : 1.35 Ω = 2.37 A
Now i can calculate the total resistance. R=U:I so R = 3.5 V : 2.37 A = 1.47 Ω
Subtract the 1.35 Ω from that, so 1.47 - 1.35 = 0.12 Ohm or 120mΩ
When I (current) is 2.3 A (M3 turbo mode) P (power) wasted as heat in the battery is P=I²×R —> I² = 5.29 —> 5.29 × 0.12 Ω = 0.63 Watt heating up the battery, which is nothing to worry about i.m.o.
Anyway, with Ri=120mΩ this is not a high drain cell at all…
PS: The numbers could be off by 15% (or something) due to my equipment.
Unfortunately the batteries got to me first from AliExpress, even though I ordered the OTR M3 from GearBest at least a good few days before the batteries. Hopefully the M3 will turn up next week.
I know nothing about numbers ( :person_facepalming: ) but from your measurements it seems that for lights like the OTR M3, or an Olight S1R, it wouldn’t be a good battery mainly specially to use the brightest levels, right?
Also, theoretically, it would perform worst than - examples - the AWT IMR , the Windyfire IMR, and the Trustfire IMR, (all tested by HKJ), am I correct?
Thanks again for your work and results on this
It will be okay up to 1.5 Amperes or something.
With a linear driver that’s approximately 6 Watts, which is usually around 650 Lumen from an XM-L2 (correct me if i’m wrong, anybody)
Yes, probably.
I had to know myself too. 
I guess we should wait for a next generation 16340, similar to the Aspire 18350.
Probably just a matter of time.
Thanks again for the explanation Jerommel! :+1:
If I understood correctly, they will run “well” except in the highest modes (that are above 600lm in the lights I mentioned)!
Hum, getting a “Aspire IMR 16340” would be pretty nice :sunglasses:
I like small lights (16340 sized), and I don’t have more because I want to have them with decent batteries and that’s being hard to get (maybe I’m too picky about that, I admit)!
BTW, another confirmation that the OTR battery is nice was made by djozz some time ago, here: What did you mod today? - #1213 by djozz
I guess the OTR cell has to be nice when they sell it with a 900 Lumen light.
I got a comment on my Ri test in another thread:
I did not know this, so i will repeat the test at 4.0 Volts and on 3.7 Volts (without load) and see what it does.
Yes, the IR is supposed to be measured on a fully charged cell.