Efest 18650 2250mAh (Black)
Button top



Official specifications:

• Efest IMR 18650
• Brand: Efest Model: CGR-N
• High Drain battery
• Capacity:2250mah Material: Li-Mn
• Positive Pole: Button top
• Size:18.41(W)*66.88(L)mm

This is the button top version, this means that a button has been added to the top of the cell, making it slightly longer.

























Flat top



Official specifications:

• Efest IMR 18650
• Brand: Efest Mode
• High Drain battery
• Capacity:2250mah Material: Li-Mn
• Positive Pole: Flat top
• Size:18,23(W)*65,12(L)mm

The flat top version of the battery matches the 18x65 mm specification.

























Conclusion

Efest does not specify the actual cell used, but the capacity specifications and discharger curves matches the a Panasonic cell, making this a very good battery.



Notes and links

The batteries was supplied by Efest 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