Keeppower IMR26650 3500mAh (Black) 2014



Official specifications:

• Brand Name: KeepPower
• Type: Li-Ion
• KeepPower IMR 26650 3.6V/3.7V 3500mAh High Drain Li-ion Rechargeable Battery
• Min Capacity: 3400mAh
• Typical Capacity: 3500mAh
• Normal Voltage: 3.7V
• Quality Lithium Ion rechargeable cell
• Maximum Capacity and Reliability
• Maximum Constant Discharge Current: 20A
• 4.2 volts max voltage and 3.6-3.7 volts nominal voltage
• Flat top: Yes
• Dimension: (D)26.50mm*(H)67.000mm
• Weight: Max. 93.0g

This battery is rated as a high current type.











The two batteries has different capacity and being unprotected this makes them very bad for usage in series.
The batteries can handle up to 20A, but does heat up.















Conclusion

These batteries are acceptable for single cell use, but due to the difference in capacity not for usage in series.
The high current performance is acceptable, but it is possible to find 26650 with lower capacity, but considerable better high current capability.



Notes and links

The battery was supplied by Keeppower 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