Key Parameters

Parameter Item Specification Value Remarks
Model INR21700-50G INR denotes Lithium Nickel Cobalt Oxide
Nominal Capacity 5000mAh Measured at 0.2C (approx. 1000mA) discharge rate, cut-off at 2.5V
Minimum Capacity 4900mAh -
Nominal Voltage 3.6V -
Charge Voltage 4.2V Standard charge cut-off voltage
Cut-off Voltage 2.5V Discharge termination voltage; voltage below this level may damage the cell
Standard Charge Current 0.5C (approx. 2500mA) -
Fast Charge Current 1.0C (approx. 5000mA) Requires corresponding charge management solution
Standard Discharge Current 1.0C (approx. 5000mA) -
Maximum Continuous Discharge Current 9.8A Approx. 2C rate capability, one of its key features
Internal Resistance ≤ 18.5 mΩ AC Internal Resistance (AC IR), low internal resistance is fundamental for high-current discharge
Weight Approx. 69g -
Dimensions (Diameter x Height) Max. 21.3mm x 70.1mm Includes label thickness
Cycle Life Approx. 500 cycles (Capacity retention ≥ 60%) Under standard charge/discharge conditions

Key Features and Advantages

Ultra-High Energy Density

The 50G cell achieves a capacity of 5000mAh, ranking among the highest in the 21700 format. Its energy density is exceptionally high (typically exceeding 700Wh/L), meaning it stores more electrical energy within the same volume. This makes it ideal for applications demanding stringent endurance requirements.

Superior Discharge Performance

Maximum continuous discharge current reaches 9.8A, far exceeding typical high-capacity cells (usually around 5A). This enables the 50G to serve not only low-rate devices but also effectively balance capacity and power demands, making it suitable for equipment requiring instantaneous or sustained high-power output.

Low Internal Resistance

An internal resistance of ≤18.5mΩ ensures minimal voltage drop and heat generation during high-current discharge, enhancing discharge efficiency and safety.