Test/review of Xtar INR18650 2600mAh (Cyan) 2020

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HKJ
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Location: Copenhagen, Denmark
Test/review of Xtar INR18650 2600mAh (Cyan) 2020

Xtar INR18650 2600mAh (Cyan) 2020
DSC_2971
Official specifications:


  • Nominal capacity: 2600mAh
  • Nominal voltage: 3.6V
  • End of discharge voltage: 2.5V
  • Max. pulse discharge current: 35A
  • Max. continuous discharge current: 25A
  • Charging temperature range: 0°C ~ 60°C
  • Discharging temperature range: -40°C ~60°C
  • Cycle life: 500 cycles
  • Internal resistance

Xtar%20INR18650%202600mAh%20(Cyan)%202020-info
This is high current cells with fairly low capacity.
DSC_2970
DSC_2972 DSC_2983
DSC_2973
DSC_2974
DSC_2975
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Capacity
The two cells do not match, the A cell has lower capacity and handles less current. I stop the test a bit early at high current due to the cell temperature.
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Temp-10.0
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Temp-15.0
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Temp-20.0
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Temp-30.0
Xtar%20INR18650%202600mAh%20(Cyan)%202020-CapacityTimeHours
Xtar%20INR18650%202600mAh%20(Cyan)%202020-CapacityTime
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Energy
Xtar%20INR18650%202600mAh%20(Cyan)%202020-PowerLoadTime
Xtar%20INR18650%202600mAh%20(Cyan)%202020-TripCurrent
Xtar%20INR18650%202600mAh%20(Cyan)%202020-Charge
With these charge curves it looks like one of the cells are faulty.
Xtar%20INR18650%202600mAh%20%28Cyan%29%202020-pulse-1.0%2010%2010-IR
Conclusion
One of the cells looks fairly good, the other do not.
This makes these cells a bad choice.
Notes and links
The batteries was supplied by Xtar 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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries

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

BT100
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Posts: 127
Location: AZ USA

Thanks for the review !

Superstocker
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Thanks for keeping us informed HKJ!

Blggg
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Last seen: 1 month 4 days ago
Joined: 08/25/2018 - 07:23
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Location: Thailand

Thanks for the review. I’m surprised by how inconsistent the 2 batteries are.

d_t_a
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Last seen: 4 hours 45 min ago
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Location: Manila, Philippines

Maybe need to inform and ask Xtar the reason for 2 Xtar 2600mAh 18650 batteries that behave somewhat differently, might indicate the internal battery used is different?

Ventsi
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Last seen: 20 hours 29 min ago
Joined: 10/26/2011 - 18:30
Posts: 269
Location: Bulgaria

Thanks for another review, HKJ!
Surprised by the low quality batteries by Xtar, I thought they only use reliable sources for cells.