Samsung 50S 21700 5000mAh 25A Battery

4. Product Description

The Samsung 50S 21700 5000mAh 25A Battery is a rechargeable cylindrical lithium-ion cell designed for applications that need high energy capacity and substantial discharge current. Identified by the model number INR21700-50S, it offers a typical capacity of 5000mAh and a nominal voltage of 3.6V, providing approximately 18Wh of energy per cell.

Its 21700 format is commonly used in custom battery packs, robotics, portable power equipment, and other compatible high-drain electronic systems. The 25A continuous discharge rating applies under the manufacturer's specified conditions; suitable thermal management and protection circuitry are important for high-current applications.

Features

• High capacity: Typical 5000mAh capacity for extended operating time.

• High-current output: Up to 25A continuous discharge under specified conditions.

• 21700 cylindrical format: Suitable for compatible battery holders and engineered battery packs.

• Rechargeable lithium-ion chemistry: Supports repeated charging when operated within the specified limits.

• 3.6V nominal voltage: Suitable for electronics and power systems designed for this cell voltage.

• Compact energy storage: Approximately 18Wh nominal energy per cell.

• Samsung SDI model: INR21700-50S cell designation.

Applications

• Robotics and unmanned ground vehicles (UGVs)

• Custom lithium-ion battery packs

• Portable power systems and compatible power stations

• High-drain electronic projects

• Compatible industrial and electronic equipment

• Battery-pack prototyping and engineering projects

How to Use

1. Verify that your device or battery pack is designed for a 21700 lithium-ion cell.

2. Use a charger specifically designed for single-cell lithium-ion batteries with a maximum charging voltage of 4.2V.

3. Observe the correct positive and negative polarity when installing the cell.

4. Use an appropriate battery management system (BMS), overcurrent protection, and temperature monitoring in assembled packs.

5. Keep the discharge current and operating temperature within the cell's specified limits.

Important Notes

• This is typically a bare, unprotected cell. Do not assume that it includes built-in overcharge, over-discharge, or short-circuit protection.

• Never short-circuit, puncture, crush, disassemble, or expose the battery to fire or excessive heat.

• Do not exceed the specified 4.2V charging voltage or discharge below the 2.5V cut-off limit.

• The 25A rating is not a guarantee of safe operation in every enclosure or application. Heat, airflow, wiring, connections, and protection design all affect performance.

• Avoid directly soldering to the cell terminals; use suitable battery-cell welding methods and qualified assembly practices.

• Confirm the exact model, authenticity, terminal type, and physical dimensions before integrating it into a battery pack.

Package Includes

- 1 × Samsung 50S 21700 5000mAh 25A Battery