Bidirectional charger

Power flow in both directions

Imper’s V2H/V2G bidirectional charger enables energy flow between EV batteries and AC supply while supporting EV self-consumption, home backup power, and future vehicle-to-grid applications.

With flexible AC-link and DC-link architectures, it allows manufacturers and solution providers to balance installation flexibility, system complexity, compliance, and upgrade potential across different market requirements.

Bidirectional Charger
Architecture comparison

AC bidirectional charger vs DC bidirectional charger

The choice between AC and DC architecture impacts power conversion location, compliance handling, installation flexibility, and overall system complexity.

Comparison item
AC bidirectional charger
(inverter in EV)
DC bidirectional charger
(inverter in charger)
Power conversion location
Inside the EV bidirectional onboard charger (OBC).
Inside the charger.
Grid code compliance
Managed by EV standards and regional compliance conditions, which may increase adaptation complexity.
Fixed installation makes compliance and certification more straightforward for stationary deployment.
Installation flexibility
Simpler charger side, but requires EV-side bidirectional readiness and hardware compatibility.
Easier for charger upgrades and broader compatibility with different EV platforms.
System complexity
Higher dependency on EV OEM design, standards support, and vehicle-side certification pathways.
More complexity is handled on the charger side, simplifying vehicle integration for more scenarios.
Technical specifications

Designed for connected, efficient and future-ready charging

Rated power
11.5 kW for AC side, both charging and discharging
Dimensions
ODM
Connector type
NACS / CCS1 / CCS2
Supported protocols
EV communication: ISO 15118-20, ISO 15118-2
Cloud communication: OCPP 1.6, OCPP 2.0.1
Connectivity
Wi-Fi, Ethernet, Bluetooth, cellular LTE Cat 4, CAN
User interface
App
Multi-color notification LEDs
Black Start switch
Core capabilities

More than charging — a platform for home energy interaction

V2G export power

Sends power from the vehicle back to the grid when grid-side energy support is needed.

V2H & emergency backup

Powers the home during outages and supports seamless energy transitions in backup scenarios.

AI optimization & green charging

Enables optimized charge scheduling and cleaner energy operation when integrated with solar or battery systems.

Dynamic load balancing

Continuously adjusts EV charge power to stay within main panel capacity and reduce overload risks.

Black Start capability

Helps power up a completely off-grid home or restart energy systems when utility supply is unavailable.

Smart home compatibility

Fits future-oriented home energy ecosystems where EV, storage, solar and grid interaction work together.