Volkswagen ID.4: Bidirectional charging

The high-voltage battery of the Volkswagen ID.4 can act as an intelligent energy storage unit, storing excess electricity and, when required, supplying power back to a household. This advanced functionality enhances energy efficiency and supports modern smart home systems.

Requirements

✓ Volkswagen ID.4 equipped with a suitable high-capacity battery.

✓ Compatible home energy management system (HEMS) with integrated energy storage capabilities.

✓ A charging location configured in the Infotainment system of the Volkswagen ID.4.

Before using bidirectional charging with the Volkswagen ID.4, consult a qualified specialist to ensure compatibility with your home energy system.

Volkswagen strongly recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility for expert advice.

System function

The home energy management system controls both charging and discharging processes of the Volkswagen ID.4 high-voltage battery based on real-time energy demand and availability, such as surplus solar energy production.

Additionally, the Volkswagen ID.4 can supply stored energy back to the household during peak demand or even in the event of a power outage, providing increased energy independence and reliability.

Always read and follow the operating instructions of your home energy management system when using bidirectional charging with the Volkswagen ID.4.

The availability of bidirectional charging in the Volkswagen ID.4 depends on regional regulations and compatibility with local energy infrastructure.

Setting bidirectional charging and discharging

Within the Infotainment system of the Volkswagen ID.4, you can select between the following modes:

Bidirectional charging (charging and discharging) or Discharging (power output only).

Note: Time-delayed charging based on departure schedules is not available when bidirectional charging is active.

Limiting the current drain

To protect the high-voltage battery of the Volkswagen ID.4, you can define a minimum battery charge level in the Infotainment system. This ensures that sufficient energy remains available for driving.

For technical reasons, the minimum discharge level is limited to approximately 20%.

Selecting a Charging Procedure

1. Switch on the Infotainment system.

2. Tap Charging in the main menu.

Or: When the charging connector is inserted into the unlocked Volkswagen ID.4, the charging screen appears automatically.

3. Open the drop-down list and select Bidirectional charging or Discharging.

The process begins automatically according to the selected mode.

4. Verify the configured battery charge limits in the charging location profile.

The “Control using a home energy management system” function in the charging location profile does not need to be manually activated for this process.

The current energy output from the Volkswagen ID.4 can be monitored via the connected home energy management system. The vehicle can supply power with a maximum output of approximately 10 kW.

To ensure long-term durability of the high-voltage battery, the Volkswagen ID.4 includes factory-set limits on bidirectional usage.

If the maximum thresholds for operating hours (approximately 4000 hours) or energy throughput (around 10,000 kWh) are reached, a notification will appear in the Settings menu.

In this case, contact an authorized Volkswagen dealer or Volkswagen Service Facility to assess system status and continue safe operation.

The Volkswagen ID.4 demonstrates advanced energy integration capabilities, allowing it to function not only as an electric vehicle but also as a flexible energy resource within a smart home ecosystem.