Test/Review of Enercig 18650 2600mAh (Gray) 2016

Batteries and Chargers Rechargeable Batteries
1

Enercig 18650 2600mAh (Gray) 2016







Official specifications:

  • Typical capacity: 2600mAh

  • Minimum capacity: 2500mAh

  • Nominal voltage: 3.6V

  • Standard discharge: CC/CV, 0.2C, 3V

  • End-of-charge voltage: 4.2V +/0.05V

  • End-of-charge current: 0.02C (50mA)

  • End-of-discharge voltage: 2.5V

  • Continuous maximum charge current: 1C, 2500mA

  • Maximum pulse charge current: 1C, 2500mA

  • Continuous maximum discharge current: 20000mA 7.5C or 22000mA 8.5C with temperature cut-off at 80°C)

  • Max discharge current vs. time: 25-30A > 30second, 35A > 15seconds, 50A -> 6seconds

  • Cycle life at 0.5C: 300 cycles to 80%

  • Initial impedance: 35mOhm

  • Weight: 45.5g +/- 0.03g

  • Operating temperature: Charging: 0°C ~ 45°C, discharging –20°C ~ 60°C

  • Storage temperature: –20°C ~ 40°C (Max. 3 months)




A high current cell with decent capacity.











The discharge curves looks very good, the cells tracks nicely and the capacity is nearly constant up to 20A.
The 30A curve is outside specifications, but the cell handles it nicely.







The cells gets warm, but not anywhere near the temperature limit. One of the cells reach 82°C after I have stopped discharge.















Conclusion

This battery is a very good battery with good high current performance, capacity is in the mid range.



Notes and links

The batteries was supplied by ENERDan 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
2

Look very good, using your comparison chart, perfect match with Sanyo UR18650NSX

3

Thank’s HKJ.

I am surprised that the rise in temperature is at 50 ° C.

Is it possible to depend on Aluminium HKJ ???

4

Why are you surprised?
While testing the battery is in free air:

5

I do not mean that. I’m talking about the chemical composition of the battery.
LiNiMnCoAl.

My question is , if the aluminum has played a role in the rise of the battery temperature in your opinion .

6

The chemical and physical construction is the factors that affects temperature, but if it is the aluminium or some of the other elements or the combination I do not know.
Construction is internal construction, i.e. effective surface area and path between cathode and anode.

7

Thank you my friend.