Test/review of Keeppower 18650 2600mAh P1826R (Black) 2017

Batteries and Chargers Rechargeable Batteries
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Keeppower 18650 2600mAh P1826R (Black) 2017







Official specifications:

  • Part No.: P1826R

  • Protected 18650 Li-ion Rechargeable Battery

  • Minimum Capacity: 2500mAh

  • Typical Capacity: 2600mAh

  • Normal Voltage: 3.7V

  • Maximum Continuous Charging Current: 5A

  • Maximum Continuous Discharging Current: 15A

  • In Built Safety Circuitry

  • Protection Circuit (Against over charge, over discharge, over current and short-circuit.)

  • 4.20V maximum voltage and 2.50V cut-off voltage

  • Over 500 charge-discharge cycles



This is high current protected batteries with moderate capacity.










The discharge curves looks very good with perfect tracking.















The protection trips above 15A, but below 20A, I could not do 20A discharge curves.





Conclusion

This is a good battery and with the protection there is no risk over over discharging the battery.



Notes and links

The battery 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
Compare to 18650 and other batteries
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could you take out the wrapping to see what is its cell ?

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When the manufacturer do not provide the original cell name, I will not spoil it for them, but others are welcome to check my comparator for a match and post it here (Remember that the high current traces will be lower due to the resistance of the protection)

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Where can I purchase the Keeppower P1826R battery? The one listed on Illumn.com is the Samsung ICR18650-26F

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Sony Konion US 18650 VTC5 2600mAh 20A

Look at the Lygte Battery Comparator from Henrik

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That is wonderful. It means the Jetbeam TH20’s supplied cell may well be a Protected VTC5. This cell was the choice of top modders before the VTC5A was introduced. Nice! So exciting! :stuck_out_tongue: