Murata US21700 VX40 4000mAh 21700 Battery (High Drain)

The Murata US21700 VX40 is a high-performance 21700 lithium-ion cell engineered for applications requiring strong current output and dependable capacity. With a typical capacity of 4000mAh and high discharge capability, the VX40 is suitable for demanding battery pack applications and power systems.

Manufactured by Murata, this cell continues the legacy of Sony battery technology, delivering consistent performance, quality, and reliability.

Key Features:
- 4000mAh typical capacity
- High discharge capability (up to 30–40A class)
- Low internal resistance for efficient power delivery
- Flat-top configuration for pack integration
- Reliable performance for demanding applications

Technical Specifications:
- Model: US21700 VX40
- Format: 21700
- Nominal Voltage: 3.6V
- Charge Voltage: 4.2V
- Discharge Cutoff: 2.5V
- Capacity: 4000mAh typical
- Max Discharge Current: ~30–40A
- Standard Charge Current: ~4A
- Max Charge Current: ~8–12A
- Weight: ~68g
- Diameter: 21.5mm max
- Height: 70.0mm max
- Internal Resistance: ≤15–20 mΩ
- Operating Temp: Charge 0°C–60°C / Discharge -20°C–60°C
- Certifications: UN38.3, UL1642, IEC62133
- Origin: Japan

Applications:
- Battery pack building
- Electric mobility systems
- Power tools
- High-drain electronics

Safety Notice:
This is an unprotected lithium-ion cell intended for use in properly designed battery packs with appropriate battery management systems. Improper handling may result in fire or injury.