Test/review of Shockli 21700 4550mAh (Purple) 2018

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HKJ
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Test/review of Shockli 21700 4550mAh (Purple) 2018

Shockli 21700 4550mAh (Purple) 2018
DSC_9520
Official specifications:


  • Nominal voltage: 3.7V
  • Nomimal capacity: 4550mAh
  • Maximum continuous current: 22A

Shockli%2021700%204550mAh%20(Purple)%202018-info
High capacity and high current in the new 21700 format from Shockli.
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DSC_9521 DSC_9522
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Shockli%2021700%204550mAh%20(Purple)%202018-Capacity
The two batteries are matching very fine and can handle up to 20A. They cannot deliver full capacity to 2.8V, but maybe to a lower voltage.
Shockli%2021700%204550mAh%20(Purple)%202018-Temp-15.0
Shockli%2021700%204550mAh%20(Purple)%202018-Temp-20.0
The batteries gets fairly warm at 20A
Shockli%2021700%204550mAh%20(Purple)%202018-Temp-30.0
And I had to stop at 30A
Shockli%2021700%204550mAh%20(Purple)%202018-CapacityTimeHours
Shockli%2021700%204550mAh%20(Purple)%202018-CapacityTime
Shockli%2021700%204550mAh%20(Purple)%202018-Energy
Shockli%2021700%204550mAh%20(Purple)%202018-PowerLoadTime
Shockli%2021700%204550mAh%20(Purple)%202018-TripCurrent
Shockli%2021700%204550mAh%20(Purple)%202018-Charge
Conclusion
The batteries has lot of capacity and can deliver fairly high current, it looks like good batteries.
Notes and links
The battery was supplied by shockli.com for review.
How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Agro
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Better power delivery than Liitokala Lii-40A with ~300 mAh more? Looks good!

will34
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Thanks for the review

shadockan
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I do not know if I’m right, but I think it’s some Samsung …..
But the negative one puts me in thoughts …

Thank you Henrik.

EasyB
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Looks like a great cell. High energy density (215 Wh/kg at 1A) and good discharge capability.

It’s not a Samsung 40T, based on this test:
https://www.e-cigarette-forum.com/threads/bench-re-retest-results-samsun...

The 40T has less capacity and a lower IR.

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Why is 20A still considered to be “high discharge” for a 21700? I thought we were already getting better than that with some 18650 cells. This does seem to be a good cell overall, but I don’t understand calling it “high discharge” in this context.

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HKJ
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DavidEF wrote:
Why is 20A still considered to be “high discharge” for a 21700? I thought we were already getting better than that with some 18650 cells. This does seem to be a good cell overall, but I don’t understand calling it “high discharge” in this context.

High discharge depends on how many C’s you discharge with, 2C is the (old) standard, when you get higher you are getting into high discharge, I do usual not call 3C or 4C high discharge, but much above that and it is high discharge.

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Nice review, thanks! Thumbs Up

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HKJ wrote:
DavidEF wrote:
Why is 20A still considered to be “high discharge” for a 21700? I thought we were already getting better than that with some 18650 cells. This does seem to be a good cell overall, but I don’t understand calling it “high discharge” in this context.

High discharge depends on how many C’s you discharge with, 2C is the (old) standard, when you get higher you are getting into high discharge, I do usual not call 3C or 4C high discharge, but much above that and it is high discharge.


Okay, thanks! Good rule I guess. Grad Thumbs Up

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EasyB wrote:
Looks like a great cell. High energy density (215 Wh/kg at 1A) and good discharge capability.

It’s not a Samsung 40T, based on this test:
https://www.e-cigarette-forum.com/threads/bench-re-retest-results-samsun...

The 40T has less capacity and a lower IR.

Yes.
You’re right .
But with mAh’s is a great story as we talk about Chinese batteries …

Looking at the discharge image, I saw similarity to Samsung’s footprint …. in general ….

Of course, Lishen’s construction is not excluded, as the positive and negative poles look very much like Lishen 4000 (Basen 4000, Liitokalla 4000 ….)

toobadorz
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shadockan wrote:
Of course, Lishen’s construction is not excluded, as the positive and negative poles look very much like Lishen 4000 (Basen 4000, Liitokalla 4000 ….)

Well, you are probably right. Besides the well-known 4000mAh LR2170SA (the cell used in LiitoKala Lii-40A), LISHEN also offers another model called LR2170SF. This appears to be the cell used in this Shockli, so I have ordered some LR2170SF from a China dealer to try out…

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toobadorz wrote:
shadockan wrote:
Of course, Lishen’s construction is not excluded, as the positive and negative poles look very much like Lishen 4000 (Basen 4000, Liitokalla 4000 ….)

Well, you are probably right. Besides the well-known 4000mAh LR2170SA (the cell used in LiitoKala Lii-40A), LISHEN also offers another model called LR2170SF. This appears to be the cell used in this Shockli, so I have ordered some LR2170SF from a China dealer to try out…


I could not find any info about particular cells on the lishen website. Could you post the relevant pages with info about the lishen cells? Thanks.
toobadorz
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EasyB wrote:
toobadorz wrote:
shadockan wrote:
Of course, Lishen’s construction is not excluded, as the positive and negative poles look very much like Lishen 4000 (Basen 4000, Liitokalla 4000 ….)

Well, you are probably right. Besides the well-known 4000mAh LR2170SA (the cell used in LiitoKala Lii-40A), LISHEN also offers another model called LR2170SF. This appears to be the cell used in this Shockli, so I have ordered some LR2170SF from a China dealer to try out…


I could not find any info about particular cells on the lishen website. Could you post the relevant pages with info about the lishen cells? Thanks.

I could not find any either, and that’s why I ordered some to try.

Agro
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Has anyone found another source for this cell?

SKV89
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I purchased 5 LR2170SF at 18650batterystore.com after reading Mooch’s review saying it is the best high capacity 21700 to date outperforming the LG M50 and Samsung 50E and 50E2

Here are my capacity measurements:

Cell 1: 4,782 mah
Cell 2: 4,714 mah
Cell 3: 4,698 mah
Cell 4: 4,524 and 4,566 mah (measured twice)
Cell 5: 4,834 and 4,870 mah (measured twice)

They are only being sold for a super bargain $5.99 right now. I also tested them in the Fireflies E07 and the LR2170SF outputs higher than the Samsung 50E and LG M50. Get them before they sell out or price increase!

HydrAxx
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SKV89 wrote:
I purchased 5 LR2170SF at 18650batterystore.com after reading Mooch’s review saying it is the best high capacity 21700 to date outperforming the LG M50 and Samsung 50E and 50E2

Here are my capacity measurements:

Cell 1: 4,782 mah
Cell 2: 4,714 mah
Cell 3: 4,698 mah
Cell 4: 4,524 and 4,566 mah (measured twice)
Cell 5: 4,834 and 4,870 mah (measured twice)

They are only being sold for a super bargain $5.99 right now. I also tested them in the Fireflies E07 and the LR2170SF outputs higher than the Samsung 50E and LG M50. Get them before they sell out or price increase!

With which “charger/discharger/analyzer” did you perform the Lishen LR2170SF cell test capacity measurements? SkyRC MC3000?

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I bought these from Gearbest, but the diameter is 21,7 mm and they do not fit my new Convoy L21a.

Does anyone know the cells are rewrapped or if there is still the old wrapper underneath?

  BLF

shadockan
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Yokiamy …

Shockli is not a manufacturer.
The battery manufacturer is Lishen from China (Lishen LR2170SF).
Chinese batteries are larger in thickness and length, compared to the batteries of major manufacturers.

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Yokiamy wrote:
I bought these from Gearbest, but the diameter is 21,7 mm and they do not fit my new Convoy L21a.

Does anyone know the cells are rewrapped or if there is still the old wrapper underneath?

Hi Yokiamy

I’m sorry for your bad experience, the diameter of the shockli 21700 battery is 21.7mm,

the diameter of samsung ,LG ,SONY 21700 is 21.3mm, these 21700 will fit your flashligth

Yokiamy
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I bought Samsung 40T cells from NKON.NL and they are smaller and even fit in my Li-500 charger, which the Shockli didn’t.

  BLF