Tenpower 25SG Weight v power trade off in pack design - how to pick the right balance.
Explore the Tenpower 25SG cell for UAV applications, optimising weight and power for enhanced drone performance and endurance.
Value Propositions
Cylindrical 18650 form factor for compact design.
Nominal capacity of 9.0 Wh and 2.5 Ah for reliable energy delivery.
Top-quartile volumetric power density of 7,151 W/l for high performance.
Gravimetric energy density of 200 Wh/kg, ensuring lightweight solutions.
Maximum continuous discharge of 35 A, supporting demanding applications.
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 stands out in the market, being around the median for volumetric energy density. The gravimetric energy density is 200 Wh/kg, which is around the median compared to other cells. The cell also boasts a volumetric power density of 7,151 W/l, placing it in the top-quartile against the database median of 2,029 W/l. Additionally, it has a maximum continuous discharge rate of 35 A, which is significantly higher than the median of 30 A, making it suitable for high-demand applications. This combination of features makes the 25SG an excellent choice for UAV applications where weight and power are critical considerations.
Application Challenges
In the EVTOL sector, the challenge of balancing weight and power in battery pack design is paramount. The Tenpower 25SG cell addresses the weight vs power trade-off effectively, allowing designers to optimise UAV battery packs for maximum efficiency. With a nominal capacity of 9.0 Wh, it provides sufficient energy for extended flight times while maintaining a lightweight profile. The high volumetric power density of 7,151 W/l ensures that drones can deliver the necessary thrust without compromising on endurance. This is particularly crucial for applications such as long endurance drone batteries and heavy lift drone batteries, where every gram counts. Furthermore, the ability to manage thermal performance is essential to prevent overheating, especially in high discharge rate scenarios. The 25SG cell's design supports effective thermal management, ensuring reliable performance in demanding environments.
Why this Cell
The Tenpower 25SG cell is specifically designed to meet the rigorous demands of UAV applications. With a maximum continuous charge rate of 10 A, it allows for rapid recharging, which is essential for operational efficiency. The cell's gravimetric energy density of 200 Wh/kg positions it well within the market, providing a lightweight solution that does not sacrifice performance. Additionally, its volumetric power density of 7,151 W/l is among the highest in the database, allowing for quick bursts of power when needed. This makes it ideal for applications requiring high energy density drone batteries and custom UAV battery packs. The combination of these metrics ensures that the 25SG cell can effectively support the weight vs power trade-off, making it a top choice for drone battery design.
How Model-Based Design Helps
Simulation and model-based design play a crucial role in optimising the performance of the Tenpower 25SG cell for UAV applications. By modelling load profiles, engineers can predict how the cell will behave under various conditions, including thermal rise and voltage sag. This predictive capability allows for informed decision-making when selecting cells for specific missions. For instance, simulating the thermal behaviour of the 25SG under high discharge rates can help identify potential overheating issues before they arise, ensuring safe operation. Furthermore, by analysing usable energy across different flight profiles, designers can maximise the efficiency of drone powertrains, leading to improved mission endurance. This approach not only enhances battery thermal management for drones but also streamlines the process of choosing cells for UAVs, ultimately leading to more reliable and efficient drone operations.
