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Shaping tomorrow’s e-mobility: spearheading the manufacture of cutting-edge power and communication modules for the e-mobility sector, our innovative products extend their application to smart grid solutions, paving the way for a future defined by continuous innovation and unwavering excellence.

Key advantages.


Discover the unparalleled advantages of choosing Watt & Well. Made in France, and soon to be made in the USA, we take pride in serving our clients with competitive, high quality, and high reliability products, and maintaining  a direct line to our agile team of designers. Watt & Well  stands out as a French entity in both design and production, with key subcontractors sharing our commitment to provide security and reassurance through a secure supply chain.

Our strong track record is reflected by extremely positive customer satisfaction rates, both in terms of product capability and service delivery.  Proudly offering one of the best technologies on the market, our solutions ensure not only efficiency and innovation but also a positive image with their high reliability and extended lifespan.

You can count on Watt & Well to be a reliable partner, our reactive and flexible team prioritizes time and efficiency in delivering solutions, ensuring a quick and easy integration. The simplicity of our product architecture allows for easy system integration, typically achieved within a few weeks to a few months. With sites located in France, Norway, and the US, we strive to ensure proximity with our customers.

Committed to ongoing product enhancement, we diligently address any identified faults through comprehensive failure analysis in our research laboratory, furnished with state-of-the-art measurement technology. Emphasizing repairability, any product under warranty will be swiftly repaired within a 10-day timeframe. We also offer different services of software maintenance to keep and improve the performance level of our solutions and ensure interoperability in the long run.

Choose Watt & Well for a relationship built on trust, expertise, and dedication to long-term success.

Our solutions.

Our product range includes AC/DC and DC/DC converters for unidirectional and bidirectional fast chargers, Supply Equipment Communications Controllers (SECC), and Electric Vehicle Charging Controllers (EVCC).

While our modules are primarily designed for DC charging stations, we also offer solutions for various applications such as Energy Stationary Storage (ESS), Mobile Energy Storage (MES) and Vehicle-to-Grid (V2G).


EV charging Infrastructure

To charge an EV battery, the alternating current (AC) – typically 230 VAC and 50 Hz in Europe from the network grid must be converted to direct current (DC). When EV is plugged into the AC grid, the conversion is done by the converter embedded within the car. When the EV is plugged into a DC outlet, the power conversion is embedded within a charging station.

As the price of batteries decreases, car manufacturers increase battery capacity:  they increasingly offer a longer driving range (>400 km) and faster charging options (up to 350 kW). The EV fast charging infrastructure then becomes essential to increase the EV market. Watt & Well is providing power modules and Supply Equipment Communication Controllers (SECC) that are critical subsystems of DC charging stations.


Smart Grid Energy Stationary Storage (ESS), Mobile Energy Storage (MES) and V2G

Smart grid technologies are an alternative to the replacement or reinforcement of electric grids. Solutions such as Energy Stationary Storage (ESS), Mobile Energy Storage (MES) and Vehicle-to-Grid (V2G) provide flexible and distributed energy buffers to help integrate renewable energy sources and better manage the grids.

Both ESS, MES and V2G require bidirectional AC/DC converters to charge and discharge the batteries in the grids. At Watt & Well we are committed to participate in the ESS/MES/V2G ecosystem by providing high performance bidirectional charging modules to manage the flow of energy from the batteries to the grid and deliver the widest range of energy services. If you are involved in ESS projects which require innovative power electronics systems, we would be very pleased to partner with you.

We can also provide Electric Vehicle Communication Controller (EVCC) to be integrated in systems that need to be charged according to CCS protocol such as Energy Storage System, Electric Vehicle, electric truck, electric boat and could be also used to recharge a mobile battery at a DC charging point.

OUR BIDIRECTIONAL MODULes our evcc product

Maintenance & warranty extension services.


Commitment to EVSE Performance

Watt & Well is committed to supporting customers in deploying and maintaining high-availability EVSEs. We offer three levels of software maintenance: Basic, Standard, and Premium. All these offers entitle you to the benefits of preventive actions such as software updates and periodic testing on vehicles to verify conformity and interoperability of the solutions.

Standard and Premium software maintenance also entitles you to the benefits of corrective actions, performance monitoring, and improvement processes.

A Key Performance Indicator (KPI), defined as the proportion of charging sessions that end successfully compared to the last 100 charging sessions initiated on the EVSE, is monitored each week to track performance.

The service level agreement (SLA) for the Standard or Premium software maintenance agreement establishes the maximum time required to take corrective action as explained in the table below.


Warranty extension services

Sustained reliability is our commitment. Extend the lifespan of our products for up to 10 years from the delivery date thanks to our warranty extension service. 

If any issues arise during this period, count on us to swiftly provide replacements, either the same reference or a compatible product, to ensure continuous performance. For more details on our warranty extension offer and how it can benefit you, don’t hesitate to reach out to us.

Start your e-Mobility journey with us.

We provide the ultimate package of customer support and technical documentation to kickstart your journey with our products!

They trust us.

At Watt & Well, we work closely with our clients, our priority is to provide an unparalleled customer experience. Our team of experts is dedicated to understanding our customers’ requirements and delivering prompt solutions with unmatched efficiency.

  • Very good working experience with Watt & Well e-Mobility team. The EVI solution was integrated in our system within few weeks, for both hardware and software.
    Pierre Marey
    R&D Engineer Energy, NIDEC
  • Watt & Well has been the ideal partner throughout the development of our innovative charger.. The engineers come up with accurate proposals during specifications reviews. They are proactive in the project management while consistent with the QCD. During the vehicle integration, the technical support was flawless. Their strentgh : technical expertise, project management, professionalism, and their communication passion !
    Didier DERUY
    Innovation Project Leader – Electric Vehicle, RENAULT
  • Watt & Well proved to be a caring partner for the technical solutions as well as for respecting its engagements. The quality of follow-up, of upholding the initial planning, and the interactivity of its teams puts Watt & Well on a high level of professionalism, which is a source for Renault’s satisfaction
    Samuel CREGUT
    Research and advanced power electronics project manager, RENAULT
  • To explore the latest advancements in bidirectional charging we’ve have just received a state-of-the-art V2G (Vehicle-to-Grid) charger from Watt & Well. This cutting-edge charger is equipped with two 11-kW 500-V modules, each independently controllable. It features dual outlets for CHAdeMO and CCS connectors, allowing seamless compatibility with a wide range of electric vehicles. It enables simultaneous charging and discharging
    Mattia Marinelli
    Head of Section E-mobility and Prosumer Integration, Distributed Energy Technologies, Technical University of Denmark
  • We have reviewed companies capable of design and build high-quality bidirectional EV chargers (converters) worldwide. The W&W design, including their BMPU series, is well-matched to our current projects … This is a fairly unique product—we have looked widely.
    Dr. Willett Kempton
    Professor, University of Delaware
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