18650 Battery 2000mAh 3.7V

  • Rapid Charging – Supports continuous 5C fast charge for quick energy replenishment.
  • High Discharge Rate – Delivers steady 20C output, ideal for demanding, high-power devices.
  • Cold Weather Ready – Operates reliably at -40℃ with 1C discharge, perfect for harsh environments.
  • Low Resistance – Features DC internal resistance under 17mΩ for enhanced efficiency.
  • Shock Resistant – Engineered for excellent vibration resistance across diverse usage conditions.
  • Ideal For – Perfect fit for power tools, garden equipment, and other high-drain applications.

Specifications

Item Specification
Normal Capacity 2000mAh @0.2C
Minimum Capacity 1900mAh @0.2C (Discharge the cell from 4.2V to 2.50V by 0.2C current)
Internal Resistance ≤18 mΩ (ACIR)
Normal Voltage 3.7V
Charging Voltage 4.2V
Discharge Ending Voltage 2.5V
Standard Charging Current 0.5C
Standard Charge Cutoff Current 0.02C
Standard Discharge Current 20A
Max Charge Current (Continuous) 6A
Max Discharge Current (Continuous) 30A (With 80Deg Temperature Cut)
Cell Dimension D:18.25 mm±0.20 mm
H: 64.95 mm±0.20 mm
Weight ≤45g
Operating Temperature (Surface Temperature) Charge: 0 to 60°C / Discharge: -20 to 80°C
Storage Temperature 1 year: -20~25℃ ≤ 70%RH
3 months: -20~45℃ ≤ 70%RH
1 month: -20~60℃ ≤ 70%RH

Temperature Dependence of Discharge Capacity

The capacity comparison under different temperatures was tested: After standard charging, the battery was discharged at a constant current of 10A until the cut-off voltage of 2.5V. The obtained capacity data are shown below.

Discharge Temperature
-20℃-10℃0℃25℃60℃
≥60%≥75%≥80%100%≥95%

Discharge Rate Capabilities

Discharge capacities of the cell at 25°C after standard charging, obtained by discharging to 2.5V with varying currents as specified in the table below:

Current 0.4A 4A 10A 15A 20A
Relative Capacity 100% ≥95% ≥95% ≥95% ≥95%

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