21700 batteries

XTAR 21700 Lithium Battery Series

Engineered for demanding applications, the XTAR 21700 battery lineup delivers reliable power across a full spectrum of use cases — from everyday carry flashlights to high-drain professional devices. Whether you need balanced endurance, extreme discharge rates, or the convenience of built-in USB-C charging, there's an XTAR 21700 built for the job.

Why Choose XTAR 21700?

  • High Capacity Options — Available in 4900mAh, 5000mAh, and 6000mAh to match your runtime requirements
  • High-Drain Performance — Select models support up to 35A continuous and 90A pulse discharge for the most power-hungry devices
  • Built-in USB-C Charging — Charge directly without an external charger, perfect for on-the-go use
  • Versatile Applications — Optimized for flashlights, outdoor gear, and high-performance electronics
  • XTAR Quality Assurance — Rigorous quality control for stable, dependable, and long-cycle-life performance

Key Specifications

  • Cell Format: 21700
  • Nominal Voltage: 3.6V
  • Capacity Range: 4900mAh – 6000mAh
  • Continuous Discharge: 15A – 35A (model dependent)
  • Pulse Discharge: Up to 90A (HP high-performance models)

Find the right XTAR 21700 battery for your device and power up with confidence.