Molicel P45B 21700 Battery: Unrivaled Power and Performance

The Molicel P45B 21700 battery is a cutting-edge lithium-ion rechargeable battery engineered for demanding applications that require both high capacity and impressive power output. With a remarkable 4500mAh capacity and a continuous discharge rate of 45A, this battery is a top performer in its class. Whether you're a vaper seeking extended vape time, a hobbyist powering your latest creation, or a professional relying on dependable tools, the Molicel P45B delivers exceptional performance and reliability1.

Technical Specifications

Specification	Details
Brand	Molicel
Model	P45B
Battery Type	21700
Chemistry	INR 2
Capacity	4500mAh
Nominal Voltage	3.6V
Full Charge Voltage	4.2V
Discharge Cutoff Voltage	2.5V
Continuous Discharge Rate (CDR)	45A
Max Discharge Current	45A (80°C cut-off) 3
Standard Charge Current	4.5A 4
Max Charge Current	13.5A (70°C cut-off) 4
Rechargeable	Yes
Protected	No (Unprotected cell)
Cycle Life	~300+ charge cycles 1
Diameter	21.4mm 1
Length	70.0mm 1
Weight	~70g 1

Development and Performance

Originally developed for high-performance electric vehicles, the Molicel P45B boasts advanced technology that sets it apart from the competition3. This battery represents a significant leap forward in 21700 battery technology, offering a unique combination of high capacity and an ultra-high discharge rate1. Compared to its predecessor, the Molicel P42A, the P45B offers approximately 7% higher capacity and a remarkable 22% lower DC internal resistance (DCR)5. This lower DCR translates to reduced voltage sag and increased power output, especially crucial for high-drain devices.

Key Features and Benefits

High Capacity: The Molicel P45B boasts a 4500mAh capacity, providing extended runtimes for your devices and reducing the need for frequent recharging1.
Ultra-High Discharge Rate: With a continuous discharge rate of 45A, this battery can handle power-hungry applications with ease, ensuring consistent performance even under heavy loads1.
Low Internal Resistance: The P45B has a very low internal resistance, which minimizes voltage sag and maximizes power output, especially beneficial for high-drain devices6.
Fast Charging: The Molicel P45B supports fast charging at an impressive 3C rate (13.5A), allowing you to quickly recharge the battery and minimize downtime. This charging speed surpasses many other 21700 batteries, ensuring you spend less time waiting and more time enjoying your device7.
Long Cycle Life: This battery can withstand hundreds of charge cycles with minimal performance degradation, ensuring long-term reliability and value1.
Exceptional Cold Temperature Performance: The P45B excels in cold environments, maintaining over 3.51Ah capacity even at -30°C. This makes it an ideal choice for applications requiring low-temperature operation or for users in colder climates3.
Wide Operating Temperature Range: The P45B can operate in temperatures as low as -40°C, making it suitable for use in various environments and applications8.
Safety: Molicel batteries are known for their high thermal stability and reliability8.

Comparisons

The Molicel P45B stands out among its competitors, offering a superior combination of features and performance. When compared to the Vapcell T50, the P45B delivers a higher continuous discharge rate (45A vs. 20A), making it better suited for high-power applications9. While the Samsung 50S boasts a slightly higher capacity, the P45B excels with a lower DC IR and cooler operation at high current levels, resulting in improved performance and longevity6.

Applications

The Molicel P45B is a versatile battery suitable for a wide range of applications. Here's a summary of its key uses and benefits:

Application	Benefits
Vaping	High power output, long battery life (use with caution and appropriate safety features)
Electric Vehicles (EVs) and E-Bikes	High power and capacity for extended range
Power Tools	Reliable power for cordless drills, saws, and other equipment
Battery Packs	Ideal for building custom high-performance packs
RC Vehicles and Drones	Stable and long-lasting energy for demanding RC applications
Flashlights and Tactical Gear	Powers high-performance LED torches and professional gear
Home Appliances	Provides reliable power for various household devices 5

While the Molicel P45B is suitable for a wide range of applications, it's essential to prioritize safety when handling and using this powerful battery.

Safety Precautions

As an unprotected cell, the Molicel P45B requires careful handling and the use of a Battery Management System (BMS) or Protection Circuit Board (PCB) to ensure safe operation10. Lithium-ion batteries, including the P45B, have the potential for thermal runaway, a dangerous chain reaction that can lead to fire or explosion. To prevent thermal runaway, always use a compatible smart charger, avoid physical damage to the battery, and store it in a cool, dry place11.

Here are some essential safety guidelines for using the Molicel P45B:

Always use a compatible smart charger designed specifically for this type of battery1.
Never overcharge or over-discharge the battery8.
Store the battery in a safe, non-flammable container8.
Do not damage, puncture, short circuit, or modify the battery8.
Never use a damaged battery8.
Never carry loose batteries in your pocket, purse, or bag, as they can come into contact with metal objects and cause a short circuit11.
Always store or transport batteries in a protective case or box11.
Do not use the battery if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging11.
When using the P45B in vaping devices, ensure the device has appropriate safety features and a battery management system1.

Conclusion

The Molicel P45B 21700 battery is a top-performing power cell that delivers an exceptional combination of high capacity, an ultra-high discharge rate, and fast charging capabilities. Its versatility and reliability make it an excellent choice for various applications, from vaping enthusiasts and RC hobbyists to professionals seeking dependable power for their tools and electric vehicle owners looking for extended range. By prioritizing safety and following the recommended guidelines, users can enjoy the remarkable performance and long lifespan of the Molicel P45B.