TerraE 50P EVTOL Maximise flight time - optimise the cell selection, duty cycle and flight speed to maximise flight time.
Discover the TerraE 50P cell for EVTOL applications, optimising flight time and overcoming challenges in drone battery design and selection.
Value Propositions
Cylindrical 21700 form factor for efficient space utilisation.
Nominal capacity of 18.0 Wh and 5.0 Ah for reliable performance.
Top-quartile volumetric energy density of 686 Wh/l for extended flight times.
Maximum continuous discharge of 50.0 A, ensuring high power output.
Gravimetric power density of 2400 W/kg, ideal for lightweight UAV designs.

About the Cell
The TerraE 50P cell features a cylindrical 21700 form factor, optimising space and weight for UAV applications. With a nominal capacity of 18.0 Wh and 5.0 Ah, it delivers reliable energy storage. The cell boasts a volumetric energy density of 686 Wh/l, placing it in the top-quartile compared to the database median of 542 Wh/l, which is crucial for maximising flight time in EVTOL applications. Additionally, its maximum continuous discharge rate of 50.0 A positions it among the highest in the database, ensuring robust performance under demanding conditions. The gravimetric energy density of 240 Wh/kg further enhances its appeal for lightweight drone battery packs, making it a prime choice for UAV battery optimisation.
Application Challenges
In EVTOL applications, maximising flight time is critical. The TerraE 50P cell addresses this challenge by providing high energy density and efficient power output. The ability to optimise cell selection, duty cycle, and flight speed directly impacts the operational efficiency of drones. With the increasing demand for long endurance drone batteries, the 50P's specifications ensure that UAVs can perform extended missions without compromising safety or performance. The challenge lies in balancing weight, energy capacity, and discharge rates to prevent overheating and ensure reliable operation in various environments.
Why this Cell
The TerraE 50P cell is designed specifically for EVTOL applications, with a maximum continuous discharge rate of 50.0 A, which is significantly above the database median of 30 A, ensuring high power availability for demanding flight profiles. Its volumetric energy density of 686 Wh/l is crucial for extending flight times, allowing UAVs to carry out longer missions without frequent recharges. The cell's gravimetric power density of 2400 W/kg supports high discharge rates, making it ideal for applications requiring rapid energy delivery. This combination of features makes the 50P an excellent choice for custom UAV battery packs, optimising performance and endurance.
How Model-Based Design Helps
Simulation and model-based design play a vital role in optimising the performance of the TerraE 50P cell for EVTOL applications. By modelling load profiles, engineers can predict how the cell will behave under various conditions, including thermal rise and voltage sag. This allows for accurate predictions of usable energy and helps in selecting the best cell for specific mission profiles. For instance, simulating different flight speeds can reveal the optimal cruise velocity that balances energy consumption and aerodynamic efficiency. This data-driven approach reduces the risk of overheating and ensures that the UAV can complete its mission successfully, enhancing operator confidence and operational efficiency.


