Test/review of Ampsplus 18650 3500mAH (Black) 2020

[size=+3]Ampsplus 18650 3500mAH (Black) 2020[/size]



Official specifications:

• Battery Size: 18.40mm x 68.85mm
• Nominal Voltage: 3.60V
• Nominal Capacity: 3500mAh
• Min. Rated Capacity: 3400mAh
• Charging Method: CC/CV 4.20V +/-0.05V
• Discharge Voltage: 2.70V (Average Cut Off)
• Standard Charging Current CC: 1475mA
• Standard Charging time: 270min.
• Continuous Discharge Current: 10A
• Protection Circuit Trip Cut Off: 2.75V
• Battery rate: 3C
• Weight: 49 gr.
• Colour: Black, Silver, Purple
• Protection Circuit Board / PCB: Yes/ Protected (Maxell)
• Version: Button Top
• Type: Rechargeable, High Drain, NCR

This is high capacity protected 18650 battery with a fairly high current limit for a protected battery.










The two cells match nicely, but the protection do not protect a high continuous current, there I stop due to temperature.



I forgot to mount the thermo sensor on one of the batteries.



Even without thermo sensor it trips after some time at 15A.


















[size=+3]Conclusion[/size]

It is a good battery, but with the protection the maximum continuous current is about 10A continuous or 15A peak. The protection do also provide over discharge and charge protection (They always do).



[size=+3]Notes and links[/size]

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 18650 and other batteries
Table with all tested LiIon batteries