Samsung INR18650-20Q 2000mAh (green)



Official specifications:

• Battery Capacity (Mfg Rated): 2000 mAh
• Battery Chemistry: LI-Ion
• Battery Feature: Rechargeable
• Battery Form Factor: 18650
• Battery Maximum Voltage: 4.2 V
• Battery Minimum Voltage: 2.5 V
• Battery Rated Voltage: 3.6 V
• Current Output: 15 A
• Brand: Samsung
• Diameter: 18.1 mm
• Height: 64.8 mm
• Product Weight: 43 g

Thse are high power batteries for use in tools.










The cells can deliver 20A with full capacity and the maximum difference in capacity is about 0.6%.
The voltage at the lower currents is not very impressive, but in the 10A to 20A range it can match IMR cells, but with greater capacity.















Conclusion

This is a very good battery, but there is no reason to use it, except if you need a lot of current.
The R version of the battery is slightly better.



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
Comparison to other LiIon batteries