Test/review of Enerpower 18650 3.2V 1100mAh (Blue)

Batteries and Chargers Rechargeable Batteries
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Enerpower 18650 3.2V 1100mAh (Blue)







Official specifications:

  • Standard capacity: 1100mAh

  • Capacity range: 1050 ~ 1200mAh

  • Standard voltage: 3.2V

  • Internal resistance (1kHz): <=18mOhm

  • Maximum charge current: 5.5A

  • Discharge cut-off voltage: 2.5V

  • Fast discharge current: 11A

  • Maximum continuous discharge current: 33A

  • Pulse discharge current: 40A for 10seconds

  • Cycle characteristic: 500cycles (100% DOD), 1000cycles (80% DOD), 3000cycles (50% DOD)

  • Working temperature: Charge 0°C ~ 55°C, Discharge –20°C ~ 60°C

  • Storage temperature: 3 months: –20°C ~ 45°C



This is high current LiFePO4 batteries.










The batteries tracks nicely. The voltage is lower than normal LiIon, but it is stable during most of the discharge.





















Conclusion

High current at fairly stable voltage, but not much capacity.
This is a good LiFePO4 high current cell.



Notes and links

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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That discharge curve reminds me of Ni-Cads.

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Thanks for the test.
Very low capacity, unfortunately…
I think LiFePo may have a bright future for flashlights, since the Vf of LEDs gets lower.
Otherwise you can put them in series…

How about testing these:

http://www.aliexpress.com/item/4PCS-VariCore-Brand-3-2V-32700-6500mAh-LiFePO4-Battery-35A-Continuous-Discharge-Maximum-55A-High-power/32908657643.html

Interesting for Maglite D cell lights.
Enough capacity and current, according to the claimed specs.
A lot of these or similar for sale on AE now.