Engineering Behind the Molicel INR-21700-P50B’s Low Impedance and High Discharge Current
Product Updates: Molicel INR-21700-P50B The Molicel INR-21700-P50B lithium-ion battery is recognized in the battery industry for its low impedance and high discharge current, making it suitable for high-performance applications. This battery is designed with advanced materials and optimized cell architecture…
Product Updates: Molicel INR-21700-P50B
The Molicel INR-21700-P50B lithium-ion battery is recognized in the battery industry for its low impedance and high discharge current, making it suitable for high-performance applications. This battery is designed with advanced materials and optimized cell architecture to deliver superior power output while maintaining stability and efficiency.
Technical Specifications
The INR-21700-P50B is part of the 21700 battery format, providing a larger energy storage capacity compared to the 18650 cells. Its key specifications include:
- Cell Type: 21700
- Nominal Voltage: 3.6V
- Typical Capacity: 5.0Ah / 18Wh
- Energy Density: 714 Wh/L, 265 Wh/kg
- Continuous Discharge Current: 60A (cutoff at 80°C)
- Low impedance: 12.8 mΩ
Compared to its predecessor, the P45B, the P50B offers longer runtime, better capacity retention, and slower heating, effectively doubling its cycle life to up to 1400 cycles.
Design Features
Low Impedance Design
This battery features low internal resistance, enabling efficient power delivery, reduced heat generation, and stable performance. Benefits include:
The INR-21700-P50B is part of the 21700 battery format, providing a larger energy storage capacity compared to the 18650 cells.
- Reliable continuous high currents (up to 60A)
- Cooler and safer operation
- Fast charging and discharging with minimal energy loss
- Consistent performance under stress
- Extended lifespan due to reduced wear and heat
High Discharge Current Capabilities
The battery can safely release substantial power without overheating, maintaining stable voltage under high demand:
- 60A continuous discharge with cutoff at 80°C
- ~90A short bursts for quick acceleration or heavy startup demands
- Stable voltage during high drain due to low internal resistance
Advanced Cell Architecture
The INR-21700-P50B combines high energy and power with fast charging capabilities, supported by:
- High-Nickel Cathode for increased energy storage
- Silicon-Carbon + Graphite Anode for enhanced power delivery
- High-Wettability Polymer Separator for efficient ionic flow
- Optimized Electrolyte for robust performance at low temperatures
- Unique Interface Engineering for stable voltage and efficient performance
Applications
Hyper EVs & Racing Sports Cars
Designed for vehicles requiring extreme power and fast response, including hyper EVs and high-performance motocross bikes. Key benefits include rapid acceleration support, high energy density, and fast charging capabilities.
Motorcycle Racing
Suitable for electric motorcycles in road racing and off-roading, offering improved efficiency, strong torque, and quick recharge times.
Drones & eVTOL Aircraft
Ideal for heavy-lift drones and eVTOL aircraft, providing long cycle life, stable power for lifting, extended flight time, and rapid turnaround for operations.
In conclusion, the Molicel INR-21700-P50B is engineered for high-performance energy storage, offering a combination of low impedance and high discharge capability, suitable for mission-critical sectors like hyper EVs and aerial mobility.
