Samsung 21700 4000mAh 35A 3.6V Li-Ion Battery

4000mAh capacity provides strong runtime while supporting demanding applications that require consistent, reliable power for professional tools and high-performance electronic equipment.

35A max continuous discharge delivers powerful output with minimal voltage sag, making this 21700 lithium-ion cell ideal for high-drain devices and demanding applications.

3.6V lithium-ion chemistry offers high energy density and efficient power delivery, supporting modern cordless tools and electronics designed for the 21700 battery format.

Built by Samsung SDI, a global leader in lithium-ion battery manufacturing known for consistent quality, advanced engineering, and cells trusted by major OEM manufacturers.

Designed for professional power tools including cordless drills, impact drivers, and heavy-duty RC equipment that require strong, stable battery output.

Rechargeable lithium-ion design supports repeated charge cycles, providing a long-lasting and cost-effective power solution for compatible high-drain devices.