Molicel P45B Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Discover Molicel P45B for drone applications, optimising flight time with high energy density and performance. Ideal for UAV battery design.
Value Propositions
Cylindrical 21700 form factor for compact design.
Nominal capacity of 16.2 Wh and 4.5 Ah for extended use.
Top-quartile gravimetric power density (+58% vs median 750 W/kg) for high performance.
Maximum continuous discharge of 45 A for demanding applications.
Volumetric energy density of 633 Wh/l, among the highest in the database.
About the Cell
The Molicel P45B features a cylindrical 21700 form factor, optimised for drone applications. With a nominal capacity of 16.2 Wh and 4.5 Ah, it provides substantial energy storage for extended flight times. The cell boasts a volumetric energy density of 633 Wh/l, which is among the highest in the database, allowing for more energy in a compact space. Additionally, the gravimetric energy density is 231.429 Wh/kg, ensuring that the weight of the battery does not compromise the drone's performance. The maximum continuous discharge rate of 45 A and a maximum continuous charge rate of 13.5 A ensure that the cell can handle demanding applications while maintaining safety and efficiency. This combination of features makes the P45B an excellent choice for UAV battery pack design.
Application Challenges
In the aerospace sector, maximising flight time is critical. The Molicel P45B cell is designed to optimise cell selection, duty cycle, and flight speed, which are essential for achieving longer endurance in drone operations. The challenge lies in ensuring that the battery can deliver the required power without overheating or compromising safety. With the P45B's high energy density and robust discharge capabilities, it addresses the need for lightweight drone battery packs that can perform reliably in various conditions. The ability to extend drone flight time is crucial for applications such as industrial inspections, where every minute of airtime counts. This cell's performance characteristics are tailored to meet the demands of UAVs operating in extreme environments.
Why this Cell
The Molicel P45B is particularly well-suited for aerospace applications due to its impressive specifications. With a maximum continuous discharge of 45 A, it is in the top-quartile compared to the database median of 30 A, ensuring that it can handle high power demands during critical flight phases. Additionally, its volumetric energy density of 633 Wh/l is among the highest available, allowing for longer missions without increasing weight. The cell's gravimetric power density of 2314.29 W/kg also supports high discharge rates, making it ideal for applications requiring rapid energy delivery. This combination of high energy and power density makes the P45B a leading choice for drone battery cell selection, particularly in scenarios where performance and reliability are paramount.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Molicel P45B in UAV applications. By modelling load profiles, thermal behaviour, and voltage response, engineers can predict how the cell will perform under various conditions. This allows for accurate assessments of usable energy and helps in selecting the right cell for specific mission profiles. For instance, simulations can identify the optimal duty cycle and flight speed that maximise flight time while preventing overheating. By using cell-specific data, designers can ensure that the P45B meets the energy demands of the drone while maintaining safety and efficiency. This approach reduces the risk of trial-and-error testing and enhances confidence in the battery's performance before deployment.
