German companies The Mobility House and EcoG have partnered with Chinese manufacturer EV-Tech to bring a new bidirectional DC wallbox to market, aiming to accelerate the adoption of Vehicle-to-Grid (V2G) and Vehicle-to-Home (V2H) technologies.
The companies announced that their jointly developed ChargeLine BiDi wallbox has entered series production and certification, offering a compact charging solution designed to integrate electric vehicles into home energy systems and electricity markets.
Designed for bidirectional charging
The ChargeLine BiDi operates at 800 volts and delivers up to 11kW of charging and discharging power.
While the output matches that of many residential AC wallboxes, the new system utilizes DC technology to enable bidirectional energy flows between the vehicle, home and electricity grid.
The partners describe the product as an ultra-compact and highly efficient solution intended to support large-scale deployment of bidirectional charging infrastructure.
Built on open standards
A key feature of the ChargeLine BiDi is its compatibility with industry-standard communication protocols rather than proprietary systems.
The wallbox supports:
- ISO 15118-20
- ISO 15118-2
- OCPP 2.1
- OCPP 2.0.1
- OCPP 1.6
According to the companies, this ensures interoperability with compatible electric vehicles and charging management platforms already available in the market.
Any electric vehicle supporting the ISO 15118-20 standard can connect to the wallbox, while energy providers can integrate their existing OCPP 2.1-compatible backends for charging management and energy services.
Unlocking vehicle batteries as energy assets
The Mobility House said the solution lays the foundation for using millions of EV batteries as decentralized energy storage assets capable of supporting electricity grids and participating in energy markets.
The company believes bidirectional charging can help balance peak electricity demand, improve renewable energy integration and create new revenue opportunities for EV owners.
“This lays the foundation for using millions of vehicle batteries as decentralised energy storage systems, balancing peak loads in the grid, and enabling EV drivers to benefit significantly from active participation in the energy market,” The Mobility House said.
Expanding the company’s energy ecosystem
Thomas Raffeiner, CEO and Founder of The Mobility House, said the new wallbox extends the company’s existing energy market services directly into residential environments.
“With the ChargeLine BiDi, we are adding another building block to our ecosystem: what we have built over the years in the energy markets with FlexibilityAggregator and FlexibilityTrader, we are now bringing directly to the end customer’s wall and unlocking the home as a new source of value for the first time.”
“From the energy market to the garage: everything from a single source.”
German software and system integration
EcoG highlighted the role of software in maintaining compatibility and future functionality.
“This is a showcase of German innovation—the perfect interplay of German software expertise from EcoG and system competence from The Mobility House to set the standard in bidirectional charging technology together with the German automotive industry,” said Jörg Heuer, CEO and Co-Founder of EcoG.
He added that EcoG OS serves as the digital foundation of the wallbox, enabling ongoing software updates and long-term compatibility.
Public debut at Power2Drive
The new bidirectional charging solution will be showcased at Power2Drive Europe in Munich from June 23 to June 26, 2026.
Visitors will be able to see a live demonstration featuring a Volkswagen ID.3 at EcoG’s exhibition stand, while The Mobility House will also present the technology at its own booth during the event.
Supporting future V2G services
The launch follows recent announcements from The Mobility House regarding consumer-focused V2G services.
Earlier this year, the company revealed plans to offer free home charging for owners of compatible electric vehicles by monetizing battery flexibility through electricity markets.
The service is expected to launch in Germany later this year for vehicles including the Renault 5 E-Tech Electric and the upcoming electric Mercedes-Benz GLC, supported by dedicated V2G electricity tariffs from The Mobility House Energy.
As automakers increasingly introduce vehicles capable of bidirectional charging, solutions such as ChargeLine BiDi are expected to play a growing role in connecting electric vehicles to homes, renewable energy systems and power grids.