Tenpower 40TG Drones Safety and risk management - particularly around overheating and thermal runaway during flight.
Discover the Tenpower 40TG cell for drones, designed for safety and risk management, optimising performance while preventing overheating during flight.
Value Propositions
Cylindrical 21700 form factor for efficient design.
Nominal capacity of 14.4 Wh and 4.0 Ah for reliable performance.
Volumetric energy density of 575 Wh/l, top-quartile vs median.
Gravimetric power density of 1,881 W/kg, among the highest in database.
Maximum continuous discharge of 35 A, top-quartile vs median.

About the Cell
The Tenpower 40TG cell is a cylindrical 21700 battery with a nominal capacity of 14.4 Wh and 4.0 Ah, making it suitable for drone applications. With a volumetric energy density of 575 Wh/l, it ranks in the top-quartile compared to the database median of 542 Wh/l. Its gravimetric energy density of 215 Wh/kg is around the median, ensuring a lightweight design for UAVs. The cell also boasts a volumetric power density of 5,030 W/l, which is among the highest in the database, allowing for rapid energy delivery. Additionally, the maximum continuous discharge rate of 35 A positions it in the top-quartile, facilitating high-performance applications in demanding environments. This combination of features makes the 40TG an ideal choice for drone battery design, particularly in safety-critical applications where thermal management is paramount.
Application Challenges
In the context of drones, safety and risk management are critical, especially concerning overheating and thermal runaway during flight. The 40TG cell's high energy density and robust discharge capabilities are essential for maintaining performance under various operational conditions. Drones often operate in extreme environments where battery performance can be compromised. Therefore, ensuring that the battery can handle high discharge rates while remaining cool is vital for mission success. The ability to predict battery behaviour under different loads and temperatures is crucial for preventing failures and ensuring reliable operation. This is particularly important for applications requiring long endurance, such as surveillance or emergency response, where every minute of flight time counts.
Why this Cell
The Tenpower 40TG cell is specifically designed to meet the challenges faced in drone applications. With a maximum continuous discharge rate of 35 A, it is in the top-quartile compared to the median of 30 A in the database, making it suitable for high-demand scenarios. Its volumetric energy density of 575 Wh/l exceeds the median, ensuring that drones can carry more energy without increasing weight. This is particularly important for UAV battery optimisation, where every gram matters. The cell's lightweight design, combined with its high power density of 1,881 W/kg, allows for efficient energy use, extending flight times and improving overall mission endurance. This makes the 40TG an excellent choice for custom UAV battery packs that require both performance and safety.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Tenpower 40TG cell for drone applications. By modelling load profiles, engineers can predict how the cell will behave under various conditions, including different discharge rates and temperatures. This predictive capability allows for the identification of potential thermal issues before they arise, ensuring that the cell operates within safe limits. For instance, simulations can help determine the optimal charge and discharge cycles, minimising the risk of thermal runaway. Furthermore, by analysing voltage sag and usable energy, designers can make informed decisions about battery pack configurations, enhancing drone powertrain efficiency. This approach not only improves safety but also streamlines the design process, reducing the need for costly trial-and-error testing.


