Overclocker
10 kW
interesting new cell but i can't find any solid info on this yet...
redilast said:10C lol. I highly doubt it. I bet its a 10A rated cell. A cheaper version of the 35E would be my guess, but I was unable to pull up any authoritative datasheets or anything.
sannder said:The question is whether this cell is really produced by Samsung or they just sold a crappy 35E recipe to China.
Samsung has a good reputation for not exaggerating the specs, the 10C raises an eye brow here.
The overenthusiastic list of specs seems to favor the initial speculation.
Meanwhile, both Eric and Paul are using them in their packs - which is very interesting indeed.
Maybe this is the Samsung's answer for NCR18650B, the (overrated) 3350mAh cell... ?
Two post wonder making claims. Care to back them up? Data, proof of theory? Something besides a nom de plume?Firedog said:1. No such Samsung product. If Samsung had a 3.3ah, 33amp continuous discharge cell, they would be shouting the news and a data sheet would exist.
2. Compare the IMREN logo to the Chinese company Kdest. https://www.alibaba.com/product-detail/China-professional-manufacturer-lg-he2-18650_60540261015.html Same company.
They buy Samsung and LG seconds (rejects). I bought a 18v Makita tool battery clone, and it used the cells in the link above. They turn out to be 2.1ah Samsung cells, re wrapped (label and color) to look like LG 2.5ah cells but with 1 character in LG's product code wrong. I suspect if they used a true LG product code they would have more trouble with counterfeit laws. I also suspect Samsung wouldn't sell them seconds if they re label them "Samsung", but don't care if they use other names. The ebayer that sold the Makita clone, promised genuine Samsung or LG cells. Indeed, that what was inside. He didn't think to mention the #2 part or name change part or that they couldn't possibly deliver the 5.0ah promised (5s2p).
Apparently, they do the same tricks going the other way. If I had to guess, I those 33G cells are actually LG 2.1ah or 2.5ah seconds, re wrapped to look like Samsung cells. Oh, with a little imaginary bump in performance.
cell_man said:sannder said:The question is whether this cell is really produced by Samsung or they just sold a crappy 35E recipe to China.
Samsung has a good reputation for not exaggerating the specs, the 10C raises an eye brow here.
The overenthusiastic list of specs seems to favor the initial speculation.
Meanwhile, both Eric and Paul are using them in their packs - which is very interesting indeed.
Maybe this is the Samsung's answer for NCR18650B, the (overrated) 3350mAh cell... ?
33G are an EV grade cell that are produced in China by Samsung. Yes they are produced by Samsung, and we purchase from legitimate Samsung supply channels. They are supposed to have good cycle life and if charged/discharged to 4.1V/2.75V are supposed to last 8 years plus in an EV Car application (just from discussion with my contact in Samsung, don't have any data to back that up). They are ~2C continuous (6.4A) and 3C max (9.6A) rated (as stated in the spec sheet I have). Our tests indicate a capacity of 3.15Ah or more per cell with a 2.75V/cell LVC in a finished pack (spec sheet states 3.15Ah typical capacity, to 2.5V LVC, not 3.3Ah as some try to market them), we rate them as 3.1Ah per cell and the discharge test for each battery is included with the battery. IMPE, they actually run a bit cooler than the higher capacity cells, when ran at the same discharge rate. The 6P pack we offer is comfortable at the (conservative) discharge rates we recommend (1.5C continuous, 2C burst). 1.5C on the 6P pack is ~28A, so if you keep the max to no more than that, the pack will not be stressed.
No, i don't think it is as simple as saying that cell A has more capacity than cell B, so cell A is a superior to cell. I'd imagine there is a bit more to it than that and as I mentioned, these are intended for EV (and I believe they are intended to be fitted or are already being used in EV cars), so possibly they have been created with various requirements, 1 of the major being good cycle life.
For info, the 35E cell has never been in mass production (according to my sources), and only relatively small quantities have been produced up until now. The 35E are due to hopefully going into mass production in the near future with a revised formulation.
Firedog said:1. No such Samsung product. If Samsung had a 3.3ah, 33amp continuous discharge cell, they would be shouting the news and a data sheet would exist.
2. Compare the IMREN logo to the Chinese company Kdest. https://www.alibaba.com/product-detail/China-professional-manufacturer-lg-he2-18650_60540261015.html Same company.
They buy Samsung and LG seconds (rejects). I bought a 18v Makita tool battery clone, and it used the cells in the link above. They turn out to be 2.1ah Samsung cells, re wrapped (label and color) to look like LG 2.5ah cells but with 1 character in LG's product code wrong. I suspect if they used a true LG product code they would have more trouble with counterfeit laws. I also suspect Samsung wouldn't sell them seconds if they re label them "Samsung", but don't care if they use other names. The ebayer that sold the Makita clone, promised genuine Samsung or LG cells. Indeed, that what was inside. He didn't think to mention the #2 part or name change part or that they couldn't possibly deliver the 5.0ah promised (5s2p).
Apparently, they do the same tricks going the other way. If I had to guess, I those 33G cells are actually LG 2.1ah or 2.5ah seconds, re wrapped to look like Samsung cells. Oh, with a little imaginary bump in performance.
Hillhater said:Why do you think a 3.3ah, 3C, cell is unprecedented ?
Punx0r said:Hillhater said:Why do you think a 3.3ah, 3C, cell is unprecedented ?
This thread claims 10C
Overclocker said:don't read fake news LOL
em3ev says 3c max. powertrading says 10A
10C comes from a random ebay listing. 3C comes from an actual datasheet via a respected vendor. Why do you trust the former over the latter?Punx0r said:Hillhater said:Why do you think a 3.3ah, 3C, cell is unprecedented ?
This thread claims 10C
Punx0r said:Hillhater said:Why do you think a 3.3ah, 3C, cell is unprecedented ?
This thread claims 10C