Mine reads out:
1PBU13F0194220C it is not enough numbers and the decoder complains the 4th character is wrong.
This site has a tableā¦ but none of the numbers we got seem to work..??
Yeah, these websites appear to be specifically for LiFePO4, as you mentioned earlier already.
For Molicel batteries, information including the cell date code is available, for example here for Molicel P45B. So far, I have not come across something similar for EVE 50PL.
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For what itās worth, I got a 50PL from Convoy three weeks ago with the green wrapper that looks exactly the same as the pictures shown here. I donāt think you have anything to worry about.
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Yup. At this point it is strictly curiosity. Especially considering that pictures that I have found of the 50P and 50PL look identical. The answer would be to just test the darn thing. But I donāt have gear that can test at anything over 30 ampsā¦ which either should handle. I suppose I can pull out the AC IR tester and see what it can tell me. I think I will do that later and report what I get.
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I would like to buy a few more of these Eve 50PL (if that is what they are) but can not find them in stock anywhere in the US.
My very basic test against a new Samsung 40T in both the NS14R and A54U shows these batteries to be much more powerful. I would love to see some test against some of the newer high discharge heavy weight batteries.
Answering myselfā¦?? Anyway I tested the AC IR on some cells. Two Molicel P45B cells two JP40 cells, and the 50PL (?)
The two P45B cells measured 7.27. and 7.24 mOhms. the two JP 40 cells were at 3.85 and 4.02 mOhms. The 50PL measured 3.09 mOhms.
Based on these tests and having tested a couple of hundered cells with the ame setup, Yes I think the one I have is a tabless cell.
If the accounts saying the 50P in not tabless are true, I guess that means, at least the one I have, is a PL version.
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As previously posted, the Duv of the 4000k version of NN5-165HPE+ becomes more positive at higher current. In contrast and interestingly, the 6500k does the opposite. Its Duv becomes less positive at higher current.
Check out Duv flat neutral at Turbo. While I generally prefer CCT 4000-5000k, I recommend this 6500k version also. Subjectively to my eyes it has beautiful neutral-tint beam color at level 4 and Turbo. If you want a Nightwatch, December is when you find the largest discount - go for it.
(6500k version N5-165HPE+)
Level 1: 5345 Duv 0.0060
Level 2: 5400 Duv 0.0050
Level 3: 5434 Duv 0.0040
level 4: 5570 Duv 0.0030
-Turbo: 5800 Duv 0.0000
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Yeah, I can confirm exactly the same subjective impression for my older Nightwatch NS73V2 (āIncredibleā, with SFN55.3): maybe a tiny bit greenish on the very lowest level, but otherwise a really clean beam color, which actually surprised me a bit at the time. Nightwatch seem to have a pretty good eye for picking LEDs.
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I prefer the warmer 4000k CCT, but YMMV - 6500k is also fantastic and very highly recommended. To my eyes 6500k has a nice clarity, but this is subjective and there is no test to prove a āfeeelingā 
.
4000k has 95 CRI which is a plus point. To my eyes the red pops and tree branches more brownish instead of a flat grey branch/green leaves typical of high CCT LED (area to the right of spot light). Again YMMV. Big discount on going at Nealgsgadgets so a great chance to buy both and compare for yourself.
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Summary chart for Nightwatchās new generation of MYSTERY LEDs. Plenty of mystery about Nightwatch and Nealsgadgets 
.
Nightwatch used to use ChangDa-Sanan LEDs, with naming convention SFPxx, SFQxx, etc. But with the latest lights, the brand seems to have switched to these ācustom madeā LEDs unique to Nightwatch (?? - pls correct me as needed).
The green curve belongs to the LED in Nightwatch A54U, N5-165HPE. My other new Nightwatch uses N7-170HP. I assume 7070 LED? If anyone has data on the N7 LED, pls. post.
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The Chinese LEDs are getting better, but Iām surprised they arenāt offerung them in 6 volt versions that way you get better efficiency and lower temps, amd longer runtimes with series batteries or a boost driver, especislly in multi LED flashlights. They did this with the Chaos and NS14R and A15, but it wasnāt executed too well and the performance wasnāt good.
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Some LEDs like the LHP73B is 3V/6V configurable by the MCPCB. I think it would be good if this flexible design can be adopted as the norm, rather than an exception. Iāve had a random quad-die UV emitter from Aliexpress, and each die has a separate pair of +/- pads, so one can literally configure them however theyād like by designing an appropriate MCPCB.
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Got my A54U v2 last night, much better in person than in the pictures. Love this brand.
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Iām I correct in there are 3 versions of the Nightwatch A54U?
1.) A54U v.1 20,000 lumens
2.) A54U v.2 20,000 lumens
3.) A54U Ultra 30,000 lumens
I ordered the A54U Ultra and it is very close if not the same lumen output as my Nightwatch NS14R v.2
I am not sure myself since Neal might have changed the names of the various offerings over time and I donāt follow his web site closely (ie anyone pls correct me as needed).
The U in A54U already stands for Ultra, so I am not sure about the āA54Ultra Ultraā, but I most definitely could be wrong. This is Nealsgadgets after all LOL. Anyway this is what I have:
- A54Ultra: Iāve personally referred to this light as A54U v1. AFAIK this is the original version that was reviewed and brought attention to this light. Only available in 6500k. Tests ~15000 lm with my Texas Ace calibrated lumen tube.
- A54Ultra 2: Iāve referred to this light as A54U v2. AFAIK this is the second version. Available in 6500k and 4000k high CRI. Tests ~15000 lm also.
- My NS14R v2ās output is 21000 lm.
All tests done with tabless batteries EVE 40PL or JP40/AM04.
I got the 30k even though I did not know it was calles Ultra. Those are some big ass LEDs it has.
I would like to see these same tests with the Eve 50PL I received with my lights. From what I hear the 50PL is able to deliver a lot more current than either the 40PL or JP40? Correct me if I am wrong.
My guess is the single battery NS14R would benefit more from the higher discharge amperage, although for a very short time.