Tenpower 40XG Weight v power trade off in pack design - how to pick the right balance.
Discover the Tenpower 40XG cell, optimised for UAV applications, balancing weight and power for enhanced drone performance and endurance.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 14.4 Wh and 4.0 Ah for reliable energy supply.
Top-quartile volumetric energy density of 575 Wh/l for compact designs.
Maximum continuous discharge of 90 A, ideal for high-demand applications.
Gravimetric power density of 4,765 W/kg, supporting rapid energy delivery.
About the Cell
The Tenpower 40XG cell features a cylindrical 21700 form factor, providing a nominal capacity of 14.4 Wh and 4.0 Ah. Its volumetric energy density is 575 Wh/l, placing it in the top-quartile compared to the database median of 542 Wh/l, making it suitable for compact UAV designs. The gravimetric energy density of 212 Wh/kg is around the median, ensuring a balanced weight-to-energy ratio. With a volumetric power density of 12,934 W/l, it is among the highest in the database, facilitating high power outputs for demanding applications. The maximum continuous discharge rate of 90 A and a C-rate of 22.5 positions it well for high-performance UAVs, ensuring that the cell can handle significant loads without overheating or performance degradation.
Application Challenges
In the EVTOL sector, the weight versus power trade-off is critical for effective pack design. UAVs require batteries that not only provide sufficient energy for extended flight times but also maintain a lightweight profile to enhance manoeuvrability and efficiency. The Tenpower 40XG cell addresses these challenges by offering a high energy density, which is essential for long endurance drone batteries. The ability to discharge at a high rate without overheating is crucial for applications such as heavy lift drone operations, where payload capacity and flight duration are paramount. Additionally, the thermal management of battery packs is vital to prevent overheating, ensuring safe operation in extreme environments.
Why this Cell
The Tenpower 40XG cell is an excellent choice for UAV applications due to its impressive specifications. With a maximum continuous discharge of 90 A, it is positioned in the top-quartile compared to the database median of 30 A, allowing for robust performance during demanding flight scenarios. Its volumetric energy density of 575 Wh/l is significantly above the median, enabling the design of lightweight drone battery packs that do not compromise on energy supply. The high gravimetric power density of 4,765 W/kg supports rapid energy delivery, essential for maintaining drone powertrain efficiency. This cell's characteristics make it ideal for custom UAV battery packs that require a balance of weight and power.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising battery selection for UAV applications. By simulating load profiles and thermal behaviour, engineers can predict how the Tenpower 40XG cell will perform under various conditions, such as high discharge rates and temperature fluctuations. This modelling allows for accurate predictions of voltage sag and usable energy, ensuring that the selected battery meets the specific needs of the mission profile. For instance, understanding the thermal rise during continuous discharge helps in selecting cells that can operate safely within their limits, preventing overheating and ensuring reliability. This approach not only streamlines the design process but also enhances the overall performance of UAVs, enabling operators to make informed decisions about battery selection and pack design.
