This is not true, the capacity difference is only 10%, but if you compare the 10A 50A and 15A Shockli discharge rates you will see that the shockli maintains almost the same voltage as the 50A, while proving 2,72C discharge compared to the 2C discharge of the 50A.
10% capacity increase but 36% C rate increase.
On top of that, it gives almost 1000mAh more capacity at 15A.
You will notice that the Shockli gives 5.75Ah at both 1A and 15A while the 50A actually decreases from 5.2 to 4.8Ah when going from 1A to 15A discharge.
This is indication of a much higher quality cell with better current handling characteristics for the Shockli.
It probably is a killer price for the same PLB INR26650-55A cell, Enderman. Don't you wanted to build some big battery pack? Of course, it may be a risk before your eyes.
There's just one test made of this cell, and it may well be a bit of a cherry pick. Just maybe…I can also understand Shockli may have asked and paid PLB for a cherry pick bin shipment. LoL! :-D
Nah man, stick with the Shockli, no guarantee such cell is the 55A, I only see blue and black 50A wraps among the product reviews. Wish AE sellers were more clear with their product ads.
Mmm… maybe you should order a pack, to later file a claim/dispute because your cells have LiitoKala branded black wraps. If you win you would at least get some discount. I want my red Dolidada wraps, you @#$%! :-D
Barkuti have some good posts because it is pointing to the actual manufacturer (source) of these batteries. The red ones at least have the accurate part number. So we should call all these 5500mAh “Power Long” batteries I wouldn’t bother to change the wrap - probably it would be a lower price too.
Hey! Remember you're taking a risk if buying these Dolidadas, please at least inquire the seller so you have a better picture (and better refund chances if the product isn't up to par).
I’m trying to sort out the mess with the top 26650 cells and fail….
Does anyone have a test of either:
Shockli IMR26650 which was not a test sample but actual buy
Dolidada 26650-55A
Liitokala 26650-55A
Keeppower P2660C
Keeppower UH2660
Skilhunt BL-255
?
I can’t find a single one…
Also, I note that Shockli IMR26650 has nearly identical specs as PLB INR26650-55A. There is a different length tolerance, slightly different charge rates. And different chemistry :person_facepalming:
Dolidada 26650-55A and Liitokala 26650-55A have very similar name to PLB INR26650-55A, but different specs. And different from each other.
Keeppowers have specced capacity matching what HKJ measured with Shockli. And IMR chemistry too. But slightly different size and weight.
EDIT:
Added Skilhunt to the list of sought-after tests…
Agro, battery rewrappers are known to tamper with OEM manufacturer specifications. It does not matter how much, it is tampering anyway. This is probably done to ”protect” their OEM secrecy.
LiitoKala is the “best” example in this business, as they do publicly list the OEM and model in their rewraps.
IMR chemistry? Probably one of the very few true IMR cells is the LG HB6 and its brand siblings. And you can believe that if LG can't do more than 1.4Ah effective in a cell with less than half the volume of a 26650, the other manufacturers can't do much better if at all. Are all of them lying? No, but I'd say deception is their daily bread. ;-)
But why take a 5700 mAh cell (measured at 0.2C, 5900 with lower rate) and mark it as 5500 mAh?
Why take a 55A cell and say it’s 5000 mAh?
The only thing that comes to my mind is that they wanted to leave themselves some space to downgrade the cell and still meet their own specs.
Do I think that’s the real reason? No, I simply don’t know.
Frankly, I find it tempting to buy the knowledge. But buying 4 sets of cells when I just need 1 (cell, not set) is a gross overkill…
Agro, for me there's no good reason to downgrade a product, this is a looking for trouble attitude. Effort must be put in an industrial product for it to meet its specs within tight margin the entirety of its life.
Batteries aren't toys, and for a wrap I strictly prefer to stick to actual manufacturer specifications no matter how good or wrong they may look, it's their standards. In fact I prefer the OEM's wrap.
Good find with PLB specifying @ 1C. HKJ result is still higher, but not much. I’d say it’s fully consistent with the hypothesis that he actually tested a PLB cell.
Shockli specifies 1A instead…
You ask why downgrade? To first get good reviews then save money. While still meeting their specs. I still don’t see another explanation and still am not satisfied with this one.
BTW I already have a 26650-50A and want to order something better for the UT-02 I’m waiting for. :heart_eyes:
I wouldn’t bother to change the wrap - probably it would be a lower price too.
Probably one of the very few true IMR cells is the LG HB6 and its brand siblings. And you can believe that if LG can't do more than 1.4Ah effective in a cell with less than half the volume of a 26650, the other manufacturers can't do much better if at all. Are all of them lying? No, but I'd say deception is their daily bread. ;-)
