Tenpower 25SG Fast charge of the batteries - how to charge the battery quickly without overheating the cells or causing lithium plating which could degrade the battery or cause it to catch fire.
Discover the Tenpower 25SG cell for fast charging UAV applications, optimised for safety and performance without overheating or lithium plating.
Value Propositions
Cylindrical 18650 form factor for versatile applications.
Nominal capacity of 9.0 Wh and 2.5 Ah for efficient energy storage.
Top-quartile volumetric power density of 7,151 W/l for rapid energy delivery.
Gravimetric energy density of 200 Wh/kg, ideal for lightweight drone battery packs.
Maximum continuous discharge of 35 A, supporting high discharge rate UAV batteries.
About the Cell
The Tenpower 25SG cell features a cylindrical 18650 form factor, providing a nominal capacity of 9.0 Wh and 2.5 Ah. With a volumetric energy density of 511 Wh/l, it is well-suited for applications requiring compact power solutions. The gravimetric energy density stands at 200 Wh/kg, making it an excellent choice for lightweight drone battery packs. Additionally, the cell boasts a volumetric power density of 7,151 W/l, placing it in the top-quartile of the database, which enhances its suitability for fast charging applications. The maximum continuous discharge rate of 35 A ensures that it can handle demanding operational requirements without overheating, which is critical for UAV battery pack design.
Application Challenges
In the EVTOL sector, fast charging of batteries is paramount to ensure operational efficiency and safety. The challenge lies in charging the battery quickly without overheating the cells or causing lithium plating, which can degrade the battery or lead to catastrophic failures. The Tenpower 25SG cell addresses these challenges with its high maximum continuous charge rate of 10 A, allowing for rapid energy replenishment while maintaining thermal stability. This is crucial for applications such as drone battery design, where the need for lightweight and high energy density solutions is essential to extend drone flight time and improve UAV mission endurance.
Why this Cell
The Tenpower 25SG cell is specifically designed for fast charging applications, with a maximum continuous charge rate of 10 A, which is significantly higher than the database median of 8 A. This capability allows for efficient energy transfer during charging, reducing downtime for UAVs. Additionally, its volumetric power density of 7,151 W/l is among the highest in the database, providing the necessary power for rapid discharge without compromising safety. This makes it an ideal choice for UAV battery optimisation, ensuring that drones can achieve longer flight times while maintaining performance under demanding conditions.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Tenpower 25SG cell for fast charging applications. By modelling load profiles and thermal behaviour, engineers can predict how the cell will respond under various charging conditions. This includes assessing heat generation and voltage response during rapid charging cycles. Such simulations enable the selection of the most suitable cells for specific UAV missions, ensuring that the battery can deliver the required thrust and energy without overheating. This predictive capability is essential for avoiding costly trial-and-error testing and enhances the reliability of drone operations.
