Test/review of Ampsplus 16650 2500mAh (Black) 2020

Batteries and Chargers Rechargeable Batteries
1

Ampsplus 16650 2500mAh (Black) 2020







Official specifications:

  • Ampsplus 16650 2500mAh Battery Protected

  • Battery Size: 16.60mm x 67.50mm

  • Nominal Voltage: 3.70V

  • Nominal Capacity: 2500mAh

  • Min. Rated Capacity: 2400mAh

  • Charging Method: CC/CV 4.20V~4.35V

  • Discharge Voltage: 3V (Average Cut Off)

  • Standard Charging Current CC: 1250mA

  • Fast Charging Current: 2500mA

  • Standard Charging Time: 4hrs

  • Continuous Discharge Current: 6A

  • Energy Density: 9.25Wh

  • Battery Rate: 2C

  • Weight: 41 gr. max

  • Version: Button

  • Protection / PCB: Yes , Protected



This is a protected 16650 LiIon battery










The two cells match nicely, but the capacity is nowhere near the rated 2500mAh, the cells are also very hard pressed at 5A load.
The missing capacity is due to it being a 4.35V cell used at 4.2V.





















Conclusion

This cell is a fairly good 16650 protected cell, but do not expect the rated capacity.



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 18650 and other batteries
Table with all tested LiIon batteries
2

Thanks for the review HKJ!
Well, there are not much good cells in this format, and this seems to follow the way…unfortunately.
I just compared your graphs with the Sanyo UR16650ZTA 2500mAh (Magenta) and that one still takes the advantage! I picked 2 of those about a month ago and so far so good :+1:

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Yes, there is a difference between protected and unprotected cells.