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Your battery partner
for mobile and stationary applications

E4Vbased its expertise on technological mastery of all of the battery issues to provide safe, efficient and sustainable solutions to manufacturers of electric vehicles. E4V puts its know-how in terms of electric energy storage at the service of many other applications: trains, vessels, hybride vehicles, agricultural machinery, stationary solutions, etc. Battery Solutions Powered by E4V® are designed, manufactured and industrialized in France.

E4V represents the Battery pole of Univers VE Group. Univers VE Group offers to the electric vehicle market and its actors, a set of technologies, innovative products and services.

A French know-how

The French expert of energy storage

E4V designs and develops in France Lithium-ion Battery Solutions based on the Lithium-Ion Iron Phosphate (LiFePO4) technology.

Several thousand batteries solutions have already been produced on the E4V production site in Le Mans, inaugurated in 2011.

A unique positioning in the industry

E4V missions are:
- To accompany mobile or stationary projects of all sizes.
- To address the needs in terms of innovative Battery Solutions.
- To advise its partners at every stage of their projects.
- To industrialize their Lithium-ion Battery Solution rapidly.


One goal

E4V ambition is to enable a large-scale market breakthrough of safe, clean and sustainable solutions.

Over 12 000 vehicles Powered by E4V® are already in circulation.

Battery Solutions Powered by E4V®

Reliable, safe and proven solutions

E4V offers proven and secure solutions through: electrochemistry (Lithium Iron Phosphate) ; design of the cells, quality of process and materials ; BMS and monitoring systems design ; battery pack design.

Battery Solutions Powered by E4V®

Flexible and modular solutions

E4V Battery Solutions offers an outstanding flexibility which enables them to meet every need of users and fleet managers.


Denys Gounot, graduate of the Ecole Polytechnique and Ponts et Chaussées civil engineer, is a well-known leader in the Telecom and Energy fields and has an extensive track record in International Management and development of new technologies.

He joined Alcatel Alsthom in 1986 as Chief Operating Officer of Alcatel Cable. He took over the responsibility of the Sector Battery and was one of the key players leading the development of the first generation of EV. He then joined the field of advanced technology within the management team of Lucent Technologies.

Denys Gounot created E4V in 2008 to federate his own experience with the one of a large experts network of the industry.


Innovation is at the very heart of the strategy. This enables E4V to anticipate the future market needs and to be involved in the technological evolutions.

To do so, each year major investments are dedicated to Research & Development.

The development of Li-ion batteries is an industrial issue for the European Industry, France being particularly well placed in this area because of the number of car manufacturers, the importance of the electrical industry and its expertise in electrochemistry.

E4V is also involved in strategic Research and Development programs and is positioned as the perfect innovation partner for the projects related to all kind of vehicles Battery Solutions, to new embedded energy sources as well as stationary applications.

Your battery partner

E4V is one of the first European player in Europe to have moved to the industrial scale. E4V is currently the partner of several European car manufacturers and has a strong industrial base, adaptable to a wide range of projects.

Competitive and modular products which incorporate the system functions (BMS) and are based on a high-quality electrochemistry.

- Definition / Architecture

- Conception

- prototyping

- Industrialization

- Fleet management