Evva 18650 3500mAh (Black)
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Official specifications:
- Cell: Panasonic(Sanyo) NCR18650GA high drain cell
- Nominal voltage: 3.7V
- Nominal capacity: 3500mAh discharge at 0.2C mA
- Stanard Charge voltage: 4.20V ( Full Charged Voltage )
- Standard Charge current: 1000mA
- Charge Time(Std.): 4 hours
- Discharge cut-off voltage: 2.50V
- PCB Protection trip current: about 10A
- Operating environment Charging: 0°C ~ 45°C ; 65±20%RH
- Operating environment Discharging: -20°C~60°C ; 65±20%RH
- Storage environment: -20°C~60°C; Less than 1 month, -20°C~60°C; Less than 3 months
- Cell Weight: 50g max.
- Cell Dimension: (L) 68.90mm*(D) 18.60mm
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This is a high capacity cell that can handle fairly high discharge current.
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Very nice discharge curves with good tracking between the cell.
My result is below rated capacity, some of the reason is probably because I terminate charge a bit early (100mA instead of 50mA) and do not discharge to 2.5 volt, only to 2.8 volt.
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Conclusion
This cell is designed for higher loads, but it has capacity enough to be a resonable cell at lower loads also.
This is a very good cell.
Notes and links
The batteries was supplied by Evva 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