Test/review of Keeppower 18350 1200mAh P1835C2 (Black) 2017

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HKJ
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Test/review of Keeppower 18350 1200mAh P1835C2 (Black) 2017

Keeppower 18350 1200mAh P1835C2 (Black) 2017

DSC_2337

Official specifications:


  • Nominal capacity: 1200mAh
  • Nominal voltage: 3.7V
  • Charging method: CC-CV
  • Charging voltage: 4.20V
  • Std. charging current: 500mA
  • Discharge cut-off voltage: 2.50V
  • Max. constant discharge current: 8A
  • Size: 18.6 × 39.0mm

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-info

A high capacity protected 18350 cell from Keeppower. The actual cell is also high current, but the protection limits this a bit.

DSC_2335DSC_2336

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Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-Capacity

The batteries has good discharge curves, they tracks fairly well and capacity only drops slowly with current. 5A works fine, 7A is limited by the protection.

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-Temp-5.0

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-CapacityTimeHours

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-CapacityTime

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-Energy

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-PowerLoadTime

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-TripCurrent

I did not trip the protection during this test, but as can be seen from the discharge curves it will trip at 7A after some time. I just used an estimated 8A in the info block.

Keeppower%2018350%201200mAh%20P1835C2%20(Black)%202017-Charge



Conclusion

This battery is from the new generation of smaller cell with much improved performance. This means that this battery is one of the best 18350 at the current time. The protection means slightly lower output voltage at high current, a limit on maximum current and overdischarge protection.



Notes and links

The batteries was supplied by Keeppower 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
Comparison to other LiIon batteries

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

everydaysurvivalgear
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Thanks for the review mate!

18350 are slowly getting better. Any thing new and exciting with 16340s?

Agro
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CrashOne
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Too bad they didn’t use a 10A pcb. Do you know which brand is under the wrap?

Agro
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There is one well known cell with exactly the capabilities we see here: Yong Deli, commonly known for Aspire wrap.

GozonM
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Thank you for test! I ordered this… Smile

Barkuti
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Personally, I'd pull out the protection board (maybe even the button top) and rewrap the cell. 

 

Cheers 

 

 

HKJ
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Barkuti wrote:

Personally, I’d pull out the protection board (maybe even the button top) and rewrap the cell.

I would suggest you buy the unprotected version instead and it is probably cheaper

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

Agro
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I checked a couple of days ago, there were no known international sellers of unprotected. Now one appeared, but more expensive:
https://www.aliexpress.com/item/4pcs-Keeppower10A-discharge-IMR18350-120...

firedome
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Thank you for test! Thumbs Up

“We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.

-Plato

EagleShield
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Agro wrote:
There is one well known cell with exactly the capabilities we see here: Yong Deli, commonly known for Aspire wrap.

So the Aspire is rewraps of these?

Link: http://www.ydlxny.com/pc/en/product_d1.asp?idd=62&ids=4&SortID=18&id=18&idid=4&ord=5

Maybe you can write a nice mail to get a sample to test.

I can’t find them for sale anywhere tho.

Agro
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Yes. And Aspire is actually a co-owner of the factory.