No Lithium, No Hydrogen, Safe

The Aluminum Battery

7x more range
100% recyclable
Safe

Our mission

Taking action for more sustainable mobility

Design and manufacture eco-friendly and high-performance batteries. Contribute to the development of sustainable mobility. Our ambitious vision is based on disruptive technology, at the forefront of innovation.

A virtuous zero-waste cycle

The production of aluminum consumes electricity to transform aluminum oxide into metallic aluminum. The Lepty battery allows the abundant energy stored in aluminum to be released and re-transforms it into oxide. The result is a sustainable circular economy with high added value, where energy is stored where it is clean and inexpensive, and released wherever it is needed.


Facing the unprecedented challenges of the energy transition, exceptional solutions are needed.

At Lepty, our laboratory embodies technological innovation. Our team of engineers and doctors, experts in their fields, push the boundaries of knowledge to continuously advance tomorrow's technologies. Every day, we reinvent the future, developing pioneering solutions to shape a sustainable and energy-responsible world.

Aluminum for energy storage

Many attempts to harness the energy density of metals have failed due to a lack of durability and stability. Lepty, a pioneer in metal-air technology, transforms metals into a clean energy carrier. This revolutionary innovation releases the energy stored in metals, allowing it to be used efficiently to store, transport, and produce safe and sustainable energy.


Classic battery


Lepty battery

The technology that breathes

From a technical standpoint, metal-air systems work through a reaction between metal, oxygen, and water, with oxygen playing a central role in releasing the energy stored in the metal.
Unlike traditional batteries that contain heavy electrodes to store oxygen, our revolutionary air electrode allows our systems to draw oxygen directly from the ambient air. This significantly lightens their structure while maximizing their efficiency.

Lepty vs Lithium-ion vs H2

Lepty the lightest and most compact technology

Gravimetric energy density

Lithium-ion | 150 Wh / kg

Hydrogène | 750 Wh / kg

Lepty | 1 000 Wh / kg

Volumetric energy density

Lithium-ion | 300 Wh / L

Hydrogène | 250 Wh / L

Lepty | 1 000 Wh / L

They trust us, support us, and accompany us


The founding partners



Martin Aurientis

CEO - CTO

Engineer

The creation of Lepty represents a strong commitment to the energy transition, aimed at developing innovative, efficient, and environmentally friendly solutions.
I have always been driven by innovation and sustainable development in my research. Lepty is a venture aligned with my convictions, which aims to transform the energy transition in the mobility sector.


Hugo Barès

CSO

Doctor in chemistry from the University of Bordeaux