Depends what “better” means to you.
Assuming the 55A is just a higher capacity version of the 50A, then it will have a larger voltage drop and lower capacity under high load than the Shockly, even though it has a few hundred mAh higher capacity.
You can compare the Shockly to the 50A here: Battery test-review 26650 comparator
Personally I would go with higher discharge voltage and longer runtime under load instead of a few hundred mAh more capacity.
But pretty sure the 55A is 20A continues and 30A pulse.
And the shockli amp rating is the same.
Shockli mAh rating is 5500mAh and I’m pretty sure the –55 at the end of the LiitoKala’s mean 5500mAh.
So the ratings should be the same for both cells?
I don’t know what the shockli cell cost but I think the LiitoKala’s 26650-55A is pretty cheap so I just wondering if someone knows if the shockli cell is superior or not, if I should go searching for these.
The amp rating is not what matters.
What matters is the real-world discharge tests under load.
You can see in the tests I linked how the 50A has a much larger voltage drop under load, causing it to have less capacity than under 1A load.
The 55A is just 500mAh higher capacity, which will change the voltage drop characteristics very little, it’s mostly just a capacity bump.
The liitokala 50A actually has a slightly lower IR than the shockli 5500mAh cell, but the shockli holds a higher voltage for most of the discharge mostly because of its higher capacity.
The liitokala 55A cell identity is unknown until it has been measured by a reliable source. I think I read someone on this forum tested it at ~5600mAh. It could be the power long battery INR26650-55A, or it could be something else.
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…