An engineering guide to Reliance RS50 eVTOL battery pack design. Validated Voltt simulations show where the cell becomes thermally limited, how much cooling each C-rate needs on each contact geometry, where pulse power falls away at low state of charge, and how a 222s16p pack performs across a full eVTOL flight.

An engineering guide to Amprius SA504 drone battery pack design. Validated Voltt simulations show how the 60 °C thermal limit sets the usable discharge rate, how much cooling each C-rate needs on each face of the pouch, where pulse power falls away at low state of charge, and how a 12s2p pack performs across a 40 minute drone flight.

About:Energy has published an open-source physics-based parameterisation of the Molicel P45B, a high-power 21700 cell used in eVTOL, motorsport and drone platforms. The paper covers cell teardown and bill of materials, characterisation measurements, model mathematics and validation against previously released open data. Parameters are published in BPX format and load directly into PyBaMM.

About:Energy has published an open-source ECM parameterisation of the Molicel P45B, a high-power 21700 cell used across eVTOL, motorsport and drone applications. The paper sets out the full testing methodology, model structure and mathematics behind the model, validated against eVTOL and drive cycle profiles including regenerative charging. All parameter sets, validation data and documentation are released on Zenodo under CC-BY 4.0.

Why UAV cells run hotter in a pack than the datasheet says, and how one instrumented flight calibrates a model that predicts every mission after it.

From January 2028, Section 842 of the FY2026 NDAA restricts DoW battery procurement to non-FEOC supply chains. See which cell manufacturers are preparing.

Lab-validated simulation of the Samsung SDI 50U 21700 battery cell for eVTOL and electric aviation, covering rate-dependent discharge, constant power loading, pulse capability, and a full 800 V pack mission cycle.

Lab-validated simulation of the LG INR21700H52A 21700 cell for eVTOL and electric aviation, covering rate-dependent discharge, constant power loading, pulse capability, and a full 800 V pack mission cycle.

Simulated discharge, constant power, pulse power, and eVTOL mission data for the Reliance RS50 (INR21700-RS50). See how this 5 Ah, 14C cell performs in a 222s16p 800V pack across a full passenger flight cycle.

Performance analysis of the Amprius SA03, a high-energy NMC pouch cell built on a silicon anode platform. Covers gravimetric energy density, power density, discharge limits, and positioning within the Voltt cell library for drone and UAV applications.

Through the Cellect consortium, About:Energy, McMurtry Automotive, and Minviro are delivering a suite of 40+ degradation and life cycle assessment models that allow engineers to optimise cell selection from day one. The result is longer-lasting battery systems, lower total cost of ownership, and more sustainable product development. London, April 2026 — About:Energy, the battery data and software company behind The Voltt platform, has secured a £2.3m Innovate UK-funded Batter

Explore the Amprius SA88 battery for high-power drone applications. Detailed analysis of performance, thermal behaviour, and real-world engineering considerations beyond the datasheet.

About:Energy partnered with MP Space to accelerate the development of next generation satellite power systems. Using The Voltt, MP Space selected the right battery cell virtually, benchmarked multiple options against real mission profiles, and integrated validated lifetime data into MATLAB Simulink models. The result was lower technical risk, faster decision making and earlier adoption of high performance cell technology.

The Molicel P60B (INR-21700-P60B) is a next-generation cylindrical lithium-ion cell designed for high-performance applications in eVTOL, aviation, drones, motorsport, and defence. Combining exceptional energy density and reliability, it supports advanced electrification platforms where efficiency, safety, and weight are critical. Built on Molicel’s legacy of innovation, the P60B enables engineers to push the boundaries of flight and performance in next-generation electric sys

About:Energy launches new cloud platform to accelerate vehicle battery cell selection by up to six months

About:Energy partners with Munich-based EFT Mobility, part of Quantum Systems Group, to accelerate battery innovation for drone...

The Amprius SA08 is a high-specific-energy lithium-ion pouch cell designed for aerospace-grade drones, offering 338 Wh/kg while weighing just 108.5 g. In this blog, we use About:Energy’s lab-validated electrical model to simulate the SA08 under real multicopter drone loads—revealing voltage behaviour, heat generation, and usable energy beyond what the datasheet shows.

The Ampace JP40 is a high-power 21700 lithium-ion cell designed for demanding applications like drones, e-aviation, and defence. In this blog, we use our own lab-tested electrical models to simulate JP40 performance under various loads, streamlining cell selection and benchmarking.

Battery ageing is a major challenge for eVTOLs due to high-power demands during take-off and landing. These aggressive duty cycles can drive rapid degradation, especially with fast charging and cooling. This blog assesses the Molicel P45B’s performance under such conditions using validated models..

With a distinguished background at Molicel, the de facto leader in high-performance batteries, Marcos joins as Director of Business Develop