Test/review of Listman 20700 3400mAh (Yellow)

HKJ

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[size=+3]Listman 20700 3400mAh (Yellow)[/size]

DSC_2855.jpg


Official specifications:
  • Battery Capacity (Mfg Rated): 3400 mAh
  • Battery Chemistry: IMR - LiMn
  • Battery Feature: Rechargeable
  • Battery Form Factor: IMR 20700
  • Battery Rated Voltage: 3.7 V

Listman%2020700%203400mAh%20(Yellow)-info.png


This is a high current 20700 battery.

DSC_2854.jpg


DSC_2856.jpg
DSC_2857.jpg


DSC_2858.jpg

DSC_2859.jpg

DSC_2860.jpg


Listman%2020700%203400mAh%20(Yellow)-Capacity.png


The two cells tracks fairly well and can deliver nearly 30A, I get about 3000mAh from them to 2.8V

Listman%2020700%203400mAh%20(Yellow)-Temp-7.0.png



Listman%2020700%203400mAh%20(Yellow)-Temp-20.0.png


Listman%2020700%203400mAh%20(Yellow)-Temp-30.0.png


At 30A the cells gets rather hot.

Listman%2020700%203400mAh%20(Yellow)-CapacityTimeHours.png


Listman%2020700%203400mAh%20(Yellow)-CapacityTime.png


Listman%2020700%203400mAh%20(Yellow)-Energy.png


Listman%2020700%203400mAh%20(Yellow)-PowerLoadTime.png


Listman%2020700%203400mAh%20(Yellow)-TripCurrent.png


Listman%2020700%203400mAh%20(Yellow)-Charge.png




[size=+3]Conclusion[/size]

This battery is designed for high current and do that fairly well, but specified capacity is a bit optimistic.



[size=+3]Notes and links[/size]

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
Compare to 26650 and other larger batteries
 
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