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>= 8000 @80% 0.5C/0.5C, 25°c, Clamped >= 10000 @70% 0.5C/0.5C, 25°c, Clamped

While I'm thinking about it, if anyone has some original, dated testing on a CAM72 cell with the manufacturing date, we might be able to get a rough comparison

Well as expected, they are not the newest cells . I spent the time to go over them with black lines in gimp. Manufacture date is 10/11/2020. I wouldn't count them out yet though. I did testing on 5-10 year old new cells and saw maximum 7-10% over a decade (small sample size). I'd move forward...

I really do not have an answer to that. I have zero info on its thickness. So personally I wouldn't. Especially having the CALB 280 Datasheet which does show a 3mm terminal thickness. However I posted a thread above where someone had a machine shop remove the stud out of the laser welded base...

Not mine, don't even get to keep em. They have already been returned to their owner.

I can say I've not tried them, however I believe some one else in the forum has tried the C102f? cells, the near meter long 138ah cells. They seem to be overruns from car production. The other short blades are C15 cells, I've wanted but not yet got my hands on those to try. Byd uses them in...

I am neither of the people listed above, but I will be going to RE+ this year.

So yes 500 cycles is more than over a year, more specifically ~16 months. What you are describing is a cycle. Specifically it is you draining the batteries and then recharging them. However there is more to battery life than just the cycle count. In our case here, how much power you push in and...

Its for android only its LiFePoQr Battery Qr Scanner. Its not the most up to date some times but its easy to use., The other picture is just my phone camera auto scanning Qr codes. LiFePoQr will also do data matrix codes like the one I posted earlier.

Well the first problem is at a minimum that datasheet has a mistake in it. Furthermore I think it's one that has been faked. The terminal spacing is 123mm center to center on lf304s, the cell drawing in that still has the old 90mm spacing of the LF280n and LF280. The full color diagram shows the...

I only have gotten my hands on some small 26700 LMFP cells from HLY so far. The test data provided with them shows they really struggle past 1C. That of course is fine for the typical ESS focused LFP cells, but not very useful in EVs. For the BAK cells they don't give a continual discharge rate...

Here is an official cad drawing from EVE for a 280K with studs. Come Monday I could probably get a copy of the drawings we did here when making a pack out of the cells. The datasheet with this drawing is now in the resources under EVE Datasheets part 2.

Part of the original lasering process does actually draw a different colored square on the top of the cell. I was confused about this originally on some of the LF304s Grade A cells, we had not bought directly from EVE. I went back and looked at our offical EVE LF304s and they matched...

Besides CATL, non of the big sodium ion player are going. Otherwise the only other one in my notes is Topband. They have a 33mm dia 9ah sodium cell.

It's interesting to note that they have given you a mix of different cells there, the ones that read as 280ah cells are definitely produced as 280ah cells (CB310 in the QR code) Attached you'll find the datasheet for them. The CB7C0 cells are new to me, if I had to take a stab they are are...

From what I've heard BYD is making a Sodium ion cell. It will be a blade cell. I do not know if it will be a long blade like the c102f, the commonly available 138 BYD blade, or more like the c15, the short blades from 200-340ah.

The sodium cells for the seplos kits are CY 215/220ah prismatic cells (CY keeps de-rating them). the datasheet for the 220ah and 240ah versions are in the resources.

Attached is the CALB 280Ah spec sheet which at least will be close, I do not have the CALB 305Ah sheet yet.

I don't have a proper name really for you. I refer to them as laser welded studs as that is what they are and how they are attached. However what I can do is give you some of the cad drawings I found digging on Taobao for them. There are other stiles out there as well but I do not have drawings...

Seplos has started shipping Cornex PF173-280A cells in some kits, with out pictures I can't tell you if it's them but it would be easily noticeable. As for why is the Docan 280 equal to the the 310? Two thoughts. Because it isn't quite clear which cell is being referred to, there are 2 cells I...

The 302-315 ah cells tend to match the 280ah in size. Only outlier is the CATL 310 which is slightly taller. Weight wise all the larger capacity cells are heavier

I do not have comparable numbers from these tests as the hot testing started at ~150F. Most LFP cell datasheets will give a cycle life at 45C which is 113F. Overall its about half the total cycle count at 45C. This is from a EVE LF304 Datasheet for reference

They used to back in the day, this is for an original LF280, dated April of 2019. Compression has just become a standard and mandated practice in industry now.

So glad to hear this..I have a need to source real EV 71173207 style batteries with single m6 studs often. EVE moving to double studs has started to make that much harder. While on the topic of those l173f280 cells, do they make a 305 version. There's a lot of uncertainty floating around on...

This is expected. There exists no list of what cell corresponds to what manufacturer ID and Product ID. If you notice under your screenshot for product ID it shows unknown. That is why it reads 0 Ah and Wh as the app simply does not know and does not want to provide wrong values. It should be...

Perhaps the update hasn't reached me yet, but clicking on the drop-downs to view the subcategories still sends me to that page right away.

Later model REPT, Later model Ganfeng, Battero Tech, or Highstar. Those are the only four with square on square terminals that could fit the larger square studs. Seeing as the Battero Tech are new to the Market, likely not those. I've never seen the Highstar cells outside of their store either...

I have not yet purchased directly from EVE's new Alibaba store however I have done direct business with EVE in the past. I can't tell you exactly what they even sell on the Alibaba store. Something tells me it's not EV graded cells, but who knows. The going rate for China mystery grade cells...

I have gotten some LF280Ks and LF304s from Docan recently. I've not had problems with bolt or weld strength up to 10Nm across the cells. The only problem I had is one of the LF280Ks had no threads on the top half of the stud.

I will point you then in the direction of this thread to start. The poster had the same problem as you. On page two there are pictures where he took the cell to a machine shop and had them extract the broken stud and put threading in what remained of the laser welded stud...