Test/Review of MNKE IMR26650 3500mAh (Orange)

Batteries and Chargers Rechargeable Batteries
1

MNKE IMR26650 3500mAh (Orange)



Official specifications:

  • Battery Capacity (Mfg Rated): 3500 mAh
  • Battery Chemistry: Li-Ion
  • Battery Feature: Rechargeable
  • Battery Form Factor: 26650
  • Battery Maximum Voltage: 4.2±0.05 V
  • Battery Rated Voltage: 3.7 V
  • Maximum transient impulse discharge: 60A
  • Maximum charge current: 6.5A
  • Maximum current for rate discharge: 30A
  • Discharge temperature: -20°C~60°C
  • Charge temperature: 0°C~45°C
  • Storage temperature: -20°C~35°C
  • Internal resistance: < 25 milliohm




This cell do not have much capacity for its size and is rated to deliver a lot of current.










The discharge curves looks good, they track and has nearly constant capacity up to 20A. Even at 30A there is no dip in the curve.















Conclusion

This cell has good performance also at higher current. The capacity is not much better than a 18xxx cell, but it maintains higher voltage during discharge.



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

2

I have a pair of these cells from Fasttech.I measured around 40mOhms internal resistance DC.
Your comparator leads me to suspect that this is what is under the E-fest purple and Windyfire blue IMR 3500 cells.They have a little more capacity and slightly less voltage sag at high currents,but could well be within production tolerance.The Eizfan is also close.