Test/Review of Shockli 18650 2500mAh (Cyan)

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HKJ
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Test/Review of Shockli 18650 2500mAh (Cyan)
Shockli 18650 2500mAh (Cyan)

DSC_9947

Official specifications:
  • Nominal capacity: 2500mAh
  • Nominal voltage: 3.7V
  • Discharge cut-off voltage: 2.5V
  • Standard charge: 4.2V 1000mA
  • Maximum charge current: 4000mA
  • Continuous discharge current: 30A
  • Pulse discharge current: 35A
  • Initial impedance max.: 18mOhm
  • Cycle life: 500cycle to 60%
  • Operating temperature: Charging, 0°C ~ 45°C, Discharging, -20°C~60°C
  • Storage temperature: -20°c -35°c
  • Weight: 45g

Shockli%2018650%202500mAh%20(Cyan)-info

This is a high current cell with good capacity.

DSC_9945 DSC_9946

DSC_9948 DSC_9949

DSC_9950
DSC_9951

Shockli%2018650%202500mAh%20(Cyan)-Capacity

The two cells can deliver a lot of current, the two cells tracks fairly well, but the 30A/35A might be a bit optimistic.

Shockli%2018650%202500mAh%20(Cyan)-CapacityTimeHours

Shockli%2018650%202500mAh%20(Cyan)-CapacityTime

Shockli%2018650%202500mAh%20(Cyan)-Energy

Shockli%2018650%202500mAh%20(Cyan)-PowerLoadTime

Shockli%2018650%202500mAh%20(Cyan)-TripCurrent

Shockli%2018650%202500mAh%20(Cyan)-Charge



Conclusion

It looks like Shockli got a very powerful battery here with good capacity.



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/

Hikelite
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These nameless cells that only carry the name of the company that owns the wrapper can be replaced by whatever the company wants later on, change cells as they wish to since there is no claim to any particular industrial cell name (brand and model).

The graphs at high current match HE2. At 0.2A the curve is  identical with the HE2 expect for the first short part, but I guess that can easily be due to manufacturing batches. At 10A and 15A the Shockli seems to not be as good as the HE2, the 2 Shockli cells don't track identically. 

chuckhov
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“The battery was supplied by shockli.com for review.”
.

It would be a very dumb thing to send less than the best in to be tested.

Since these cells are a re-wrap, the real proof will be in how the cells perform when purchased on the open market. – Could be the same cells, or not.

I will be sticking to the Name Brands. – Those that already have a excellent track record, and so a Name worth protecting.

Thanks HKJ and Hikelite!
-Chuck

HKJ
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Hikelite wrote:
These nameless cells that only carry the name of the company that owns the wrapper can be replaced by whatever the company wants later on, change cells as they wish to since there is no claim to any particular industrial cell name (brand and model).

That is always a risk.

Hikelite wrote:
The graphs at high current match HE2. At 0.2A the curve is  identical with the HE2 expect for the first short part, but I guess that can easily be due to manufacturing batches. At 10A and 15A the Shockli seems to not be as good as the HE2, the 2 Shockli cells don't track identically.

My guess is that you matched up to the wrong cell.

 

chuckhov wrote:
"The battery was supplied by shockli.com for review." . It would be a very dumb thing to send less than the best in to be tested. Since these cells are a re-wrap, the real proof will be in how the cells perform when purchased on the open market. - Could be the same cells, or not. I will be sticking to the Name Brands. - Those that already have a excellent track record, and so a Name worth protecting.

If you look at my review, you will see that I do get bad cells to review, not only the best cells.

 

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

Hikelite
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HKJ wrote:

Hikelite wrote:
The graphs at high current match HE2. At 0.2A the curve is  identical with the HE2 expect for the first short part, but I guess that can easily be due to manufacturing batches. At 10A and 15A the Shockli seems to not be as good as the HE2, the 2 Shockli cells don't track identically.

My guess is that you matched up to the wrong cell.

Alright here we go with proving what I have said.

10A

 

15A

 

 

 

HKJ
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Hikelite wrote:
Alright here we go with proving what I have said.

I believe that this is a better match:

 

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

Hikelite
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HKJ wrote:

Hikelite wrote:
Alright here we go with proving what I have said.

I believe that this is a better match:

 

Indeed. I should have check that one too Smile

ferongr
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The positive pole screams of Samsung. In any case, like with all other high availability, unprotected high-drain 18650 IMR rewraps, I don’t know what value Shockli’s rewrap actually brings to the table, and the Samsungs are dirt-cheap already.