Apexium INR20700 3000mAh (Blue)

Official specifications:
  • Typical capacity: 3000mAh
  • Minimum capacity: 2800mAh
  • Rated discharge capacity: 2800mAh
  • Nominal voltage: 3.6V
  • Shipping voltage: >=3.45V
  • End of charge voltage: 4.2V +/-0.05V
  • End of discharge voltage: 2.5V
  • Maximum charge current: 3.0A with 0.05A cut-off
  • Rated discharge current: 0.56A
  • Maximum discharge current: 30A (35A with 80C cut-off).
  • Cycle life: 500 cycles to 80% with 30A discharge
  • Cycle life: >=1500mAh after 250 cycles at 25A discharge and 0.52A charge.
  • Operating temperature: Charging: 0C ~ 60C (recommend <50C), Discharging: -40C ~ 60C
  • Storage temperature: 1 month: 0C ~ 60C, 3 months: 0C ~ 45C, 1.5 year: 23C

This is a high current cell and I got it before the wrapper was ready.

These two cells are fairly good matched, at 30A they are a bit strained


These cells are at the low end of capacity for 20700 cells, but instead they have a fairly good high current performance.

Notes and links

The batteries was supplied by Apexium 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
Compare to 18650 and other batteries