They have made their own datasheet for the battery. I do not know if this is because the manufacturer the cell (or pay somebody to do it after their receipt) or they have rewrapped an existing cell and written a datasheet for it.
The datasheet makes me believe most in the first point, but the story on the cell look more like a rewrapper preparing for detail sale.
Personally, I do not think it is a rewrap of a Sony VTC5A (the appearance of the positive pole does not match visually), nor has any major brand like Sony / Murata, Samsung SDI, LG Chem, Panasoni / Sanyo or even E-One Molicel. It looks a bit like Howell’s cells. But I did not know this model sinisterly, very powerful, keep 30A Continuous for a nominal capacity of 2600mAh is excellent even.
HKJ, may I ask you where did you get them? Where did you get them? Because frankly I would be interested in ordering them for testing.
Yes, I saw it’s just write: apexium, so I was on their site, there is no place where we can buy these cells on their site and I look elsewhere to see, and nothing, so thanks anyway for your answer. But I’m not more advanced, lol.
Sorry, it’s not a Panasonic/Sanyo UR18650NSX, please see the positive pole, it’s 4 legs, it’s unknow chinese cell productor, i think. the chinese are more better now.
I emailed them and asked them, WHY all that writing?! They responded relatively quick. Did not answer my question but asked if I wanted some cells. I said sure…then of course they wanted to know my website address, how many I sell a month and name of company!
I told them I am a hobbyist. Waiting to hear back but DOUBT very much that they will send me a few cells!
Here is what 4 X Sanyo GA can help produce! 5000Lumen/1.05Mcd!
The reason I said “discharge curves smell like Panasonic” is because there are some HKJ reviewed cells whose discharge curve shapes are nearly equal. See, for example, Orbtronic 18650PD 2900mAh black (Panasonic NCR18650PF based) or AmpMax 18650 2900mAh black (Panasonic NCR18650?). Check 'em in HKJ's comparator. A considerable improvement (reduction) in the separator thickness and maybe composition for these cells may well be the reason for the higher discharge rate (increased surface = less internal resistance). The lesser energy density because of more space taken by the thinner separator because of way more stuff turns.
I am not saying that is this way. Just a reasonable guess.
Me, on the other hand, am right now about empty handed. It's not the first time the idea of asking for help right here comes to my mind, images included. There's certain opposition within me but I know it is of no service to The Light. I even purchased one of the Convoy S2+ Copper Limited Edition hosts not that long ago, but guess I am going to have to sell it. I originally planned on making a build with an XHP50A-00-0000-0D0UG435G (≈3500K 3-step EasyWhite, 90+ CRI, top G4 bin according to datasheet; bought the last 2 pieces from Arrow about a couple months ago), textured/orange peel reflector, H1-A boost driver soldered to pill and lighted tailcap. Guess that is not realistic for me now because I am rich LoL. I have all parts, in case anyone interested.
More on this later.
Cheers
Originally posted on Mon, 09/03/2018 - 19:07. Edited for a lil fix plus addendum.
Good point. The trail is also quite similar to that of these no longer state of the art Panasonic cells, as I said. All of this could be because all of these cells probably share the same chemistry, being the insulator technology the major difference. The Aosibo review was published nearly 4 years ago, if both that one and the Apexium INR18650 2600mAh come from the same OEM I guess they've improved the insulator quite a lot because, at 0.25Ah point in the discharge curve, the average cell IR for the Aosibo is ΔV / ΔI = (3.875V - 3.165V) / (30 - 5) = 28.4mΩ, whereas average cell IR for the Apexium is (3.94V - 3.495V) / 25 = 17.8mΩ.
Look at the positive pole of the apexium, it is much less curved (almost flat) on its extremities, which leaves thought that the Aosibo is a rewrap of a model from LG, Apexium as for him, does not looks like no positive pole existing in major manufacturers (Samsung, Sony / Murata, LG, Panasonic / SANYO, etc …), and more when you compare the curves of discharges at different levels of intensity between the Aosibo and Apexium, sag tensions are not at all the same (especially at high intensity, it’s more than blatant). As I have heard from my previous posts on this topic, Chinese cells have made a huge technological leap forward in terms of performance (I do not speak in any of their regularity and reliability), especially for the purpose of to impose a maximum on the vape market, for example Golisi, a recognized rewrapper, whom I had the opportunity to discuss for a moment with their technical and marketing managers, advocates the use of only manufacturing batteries and brands completely Chinese, because they found it difficult and tedious to succeed in obtaining important qunatités of Japanese and / or Korean cells of qualities (ex: Sanyo NCR20700A and NCR2070C which are very hard to obtain, since the order books of this mark are completely saturated by requests from Tesla, BOSCH, Metabowerke, DeWalt, etc … and unfortunately for an indefinite time, try to get original NCR20700A, you risk waiting really long to see indefinitely). As a result, Chinese cell manufacturers have seized the opportunity to grab a good chunk of the battery market for the high-powered vape, which is not really surprising to them. Finally, the only time I saw positive poles much like those of apexium is on cells from Howell, a Chinese manufacturer, they make cells 18650 and 20700, to my knowledge.