Samsung INR18650-25R 2500mAh (Cyan)



Official specifications:

• Nominal discharge capacity: 2,500mAh
• Nominal voltage: 3.6V
• Standard charge: CCCV, 1.25A, 4.20 ± 0.05 V, 100mA cut-off
• Rapid charge: CCCV, 4A, 4.20 ± 0.05 V, 100mA cut-off
• Charging time: Standard charge : 180min / 100mA cut-off
• Rapid charge: 60min (at 25°C) / 100mA cut-off
• Max. continuous discharge: 20A(at 25°C), 60% at 250 cycle
• Discharge cut-off voltage: 2.5V
• Cell weight: 45.0g max
• Cell dimension: Height : 64.85 ± 0.15mm, Diameter : 18.33 ± 0.07mm
• Operating temperature (surface temperature): Charge : 0 to 50°C (recommended recharge release < 45°C), Discharge: -20 to 75°C (recommended re-discharge release < 60°C)
• Storage temperature (Recovery 90% after storage): 1.5 year -30~25°C, 3 months -30~45°C, 1 month -30~60°C

A high current 2500mAh cell.










This is very good discharge curves, the cells tracks fine and capacity do only drop slight at high load (30A is overload and do not count).















Conclusion

This is a very good high current cell.
Comparing it to the green version of the same cell it has better performance, this may be due to a improved cell, but it can also be due to age and/or storage conditions.



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