Keeppower 18500 1500mAh (Black) 2014
![DSC_4874](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/DSC_4874.jpg)
Official specifications:
- Min Capacity: 1400mAh
- Typical Capacity: 1500mAh
- Normal Voltage: 3.7V
- Quality Lithium Ion rechargeable cell ICR18500 made in China
- In Built Safety Circuitry
- Maximum capacity and reliability
- High Discharge Rate (Max 2C)
- Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)
- 4.2 volts max voltage and 3.6-3.7 volts nominal voltage
- Over 300 charge-discharge cycles
![Keeppower%2018500%201500mAh%20(Black)%202014-info](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-info.png)
Keeppower sells two version of 18500, this one is the cheaper version from DLG. The other version uses a Sanyo cell.
![DSC_4873](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/DSC_4873.jpg)
![DSC_4876](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/DSC_4876.jpg)
![DSC_4877](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/DSC_4877.jpg)
![DSC_4878](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/DSC_4878.jpg)
![Keeppower%2018500%201500mAh%20(Black)%202014-Capacity](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-Capacity.png)
The battery does very fine up to 3A load, that is 2C and matches the rated 2C maximum discharge. Drawing much more than 3A does not really work.
![Keeppower%2018500%201500mAh%20(Black)%202014-CapacityTimeHours](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-CapacityTimeHours.png)
![Keeppower%2018500%201500mAh%20(Black)%202014-CapacityTime](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-CapacityTime.png)
![Keeppower%2018500%201500mAh%20(Black)%202014-Energy](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-Energy.png)
![Keeppower%2018500%201500mAh%20(Black)%202014-PowerLoadTime](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-PowerLoadTime.png)
![Keeppower%2018500%201500mAh%20(Black)%202014-TripCurrent](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-TripCurrent.png)
![Keeppower%2018500%201500mAh%20(Black)%202014-Charge](https://lygte-info.dk/pic/Batteries2012/Keeppower%2018500%201500mAh%20(Black)%202014/Keeppower%2018500%201500mAh%20(Black)%202014-Charge.png)
Conclusion
The performance looks average for 18500 batteries, but they are not designed for high current.
I will call the cells acceptable.
Notes and links
The batteries was supplied by Keeppower 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