Samsung 21700 5000mAh INR21700-50S45A 9C Li-ion Battery

Samsung INR21700-50E Li-ion Battery Cell (5000mAh)

The Samsung INR21700-50E is a high-capacity lithium-ion battery cell engineered for applications that prioritize energy density, reliability, and long cycle life. Designed by Samsung SDI, this cell is widely used in battery packs for energy storage systems, electric mobility, and professional electronics where consistent performance is critical.

With a 5000mAh nominal capacity, the 50E is optimized for extended runtime rather than extreme current draw, making it ideal for systems that require steady, efficient power delivery over long durations.

Stable Performance & High Energy Density

The 21700 form factor allows the 50E to deliver higher energy storage compared to traditional 18650 cells, reducing the total number of cells required in a pack. This results in simpler pack design, lower internal resistance losses, and improved overall efficiency.

Its stable discharge characteristics ensure predictable voltage behavior, helping protect sensitive electronics and improve system longevity.

Designed for Safety & Longevity

Manufactured under strict quality control standards, the Samsung 50E offers excellent thermal stability and long cycle life when used within recommended operating limits. It is well suited for professionally designed battery packs with proper battery management systems (BMS).

Note: This is a bare cell and must be used with appropriate protection circuitry. Not intended for direct consumer use without a BMS.

Key Features

• High capacity 5000mAh lithium-ion cell
• 21700 form factor for improved energy density
• Stable discharge for long-duration applications
• Low internal resistance for efficient performance
• Manufactured by Samsung SDI

Typical Applications

• Energy storage systems (ESS)
• Electric vehicles and e-mobility
• Power banks and backup systems
• Robotics and industrial electronics
• Custom lithium battery packs