Ampsplus 18350 1200mAh (Black) 2020

Official specifications:
  • Battery Size: 18.00mm x 38.60mm
  • Nominal Voltage: 3.70V
  • Nominal Capacity: 1200mAh
  • Min. Rated Capacity: 1150mAh
  • Charging Metod: CC/CV 4.20V
  • Discharge Voltage: 2.70V (Average Cut Off)
  • Charging Current CC: 500mA
  • Rapid Charging Current: 1000mA
  • Energy Density: 4.19Wh
  • Continuous Discharge Current: 6A
  • Protection Cut Off Discharge Current: 6A
  • Energy Density: 4.19Wh
  • Weight: 29 gram max
  • Colour: Black, Silver, Purple
  • Version: Button Top
  • Protection Circuit Board / PCB: Yes, Protected
  • Type: Rechargeable, |INR, Cylindrical

High capacity 18350 with protection circuit.

The two cells do not match in capacity, because it is protected cell they can still be used in series.

The protection is higher than 7A, I will guess at around 8 to 9A, as can be seen in my test one protection tripped during a 7A discharge and they both tripped immediately when I tried a 10A discharge.


I am not really happy about these batteries, capacity is a bit low and they are different, but then they are much better than many of the old generation 18350 (<=700mAh types) and they are protected.

Notes and links

The batteries was supplied by Ampsplus 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
Graphical comparison to other LiIon batteries
Table with all tested LiIon batteries