Xtar 21700 3.6V LED Flashlight 5000mAh Button-Top Rechargeable Battery

The Xtar 21700 3.6V lithium-ion rechargeable battery is built to deliver long-lasting, high-output power for demanding applications. With a substantial 5000mAh capacity and support for up to 25A continuous discharge, it’s ideal for tactical LED flashlights and other high-drain devices. This protected cell is equipped with advanced safety mechanisms and is rated for over 500 charge cycles, making it a dependable choice for professional and heavy-duty use.

Key Features:

• High capacity 5000mAh for extended runtime
• Supports 25A continuous discharge for high-drain performance
• Protected design with integrated safety circuitry
• Multiple layers of protection:
  • Overcharge protection
  • Over-discharge protection
  • Over current protection
  • Over voltage protection
  • Short circuit protection
• Explosion-proof valve for added safety
• High-performance core for consistent, stable output
• Gold-plated protection board for enhanced conductivity and thermal control
• Button Top design ensures broad device compatibility

Specifications:

• Nominal Capacity: 5000mAh
• Nominal Voltage: 3.6V
• Discharge End Voltage: 2.5V
• Max Continuous Discharge Current: 25A
• Standard Charging Voltage: 4.2±0.03V
• Standard Charging Current: 2500mA
• Transport Voltage: 3.6~3.9V
• Over Current Protection: 25.5~35A
• Operating Temperature: -20~50°C
• Storage Temperature: -20~50°C (Optimal: 25±5°C)
• Internal Resistance: ≤23mΩ
• Recharge Cycles: Over 500
• Protected: Yes
• Positive Terminal: Button Top

Common Uses:

• Tactical & LED Flashlights: Reliable power for high-output models from Xtar, Fenix, and other performance brands
• Outdoor Equipment: Perfect for headlamps, camping lanterns, and survival gear
• High-Performance Electronics: Suitable for devices requiring steady, high-drain output
• Power Tools: Used in battery packs where protection and performance are critical

Important Note:

This is a protected cell with a protruding button-top terminal. It is approximately 2.5mm longer than standard unprotected flat-top cells. Please ensure your device is compatible with protected cells before purchasing.