Keeppower 18650-4000LD Li-ion Rechargeable Battery Cell

The Keeppower 18650-4000LD is a high-performance lithium-ion rechargeable battery cell, engineered for devices that demand reliable, long-lasting power. With a substantial nominal capacity of 4000mAh and a nominal voltage of 3.6V, it provides extended runtimes for a wide range of applications.

This 18650 cell supports a continuous maximum discharge current of 4A, making it suitable for moderate to high-drain devices. It offers a wide operating temperature range, with safe discharge from -40°C to +60°C, ensuring dependable performance in various environments.

Designed for longevity, the 18650-4000LD maintains over 70% of its initial capacity after 500 charge cycles**. The battery includes standard safety protections and is built to strict specifications, weighing just 50g with maximum dimensions of 18.5mm by 65.3mm. Please note that it requires a CC-CV charging method with a 4.20V charging voltage and adheres to all standard lithium-ion safety precautions for handling and use.
  ●  Model: 18650-4000LD ●  Nominal Capacity: 4000mAh
●  Minimum Capacity: 3900mAh
●  Nominal Voltage: 3.6V
●  Charging Method: CC-CV
●  Charging Voltage: 4.20V
●  Cut Off Voltage: 2.5V
●  Standard Charging Current: 800mA
●  Standard Discharging Current: 800mA
●  Continuous Maximum Discharge Current: 4A
●  Weight: 50g
●  Maximum Dimensions: (D)18.5*(L)65.3mm
●  Temperature
Charge: 0 to +45° C
Discharge: -40 to +60° C
Storage: -20 to +45° C Less than 1 month
-20 to +30° C Less than 12 month
●  Cycle Life: 500th cycle＞70% capacity of 1st cycles