-Photoroom(1.png){kind=small}
Audi A2 e-tron Features Bidirectional Charging with V2L, V2H and Future V2G
The Audi A2 e-tron uses bidirectional charging to provide power to external devices through V2L and support household energy needs through V2H.
Audi plans to introduce future V2G capability, allowing the vehicle to send stored electricity back to the public power grid.
Audi is positioning the new A2 e-tron as more than an electric vehicle for everyday transportation. Its high-voltage battery can also be used as a flexible energy source through bidirectional charging. This technology allows electricity to flow not only from a charging station into the vehicle but also from the vehicle to external devices, a home or, in the future, the public power grid.
The A2 e-tron will be available with three battery capacities: 52 kWh, 61 kWh and 84 kWh. Depending on the battery and charging configuration, DC charging from 10 to 80 percent takes approximately 24 to 29 minutes under specified test conditions. Actual charging times may vary according to battery temperature, the current state of charge and the power available from the charging station.
Audi has developed the vehicle’s charging system with a focus on predictable and controlled performance. Its OCDC 2.0 component combines the on-board charger and DC/DC converter, while updated power electronics and software help manage the charging process. The vehicle also uses coordinated thermal management to help control battery temperature during charging and operation.
The battery management system plays an important role as well. Audi has introduced an adapted calculation algorithm for the A2 e-tron’s lithium iron phosphate, or LFP, battery options. Because LFP cells have a flatter voltage curve, it can be more difficult to determine their exact state of charge and aging condition. The battery management controller uses this information to improve calculations related to range, charging behaviour and overall energy management.
One of the A2 e-tron’s available bidirectional functions is Vehicle-to-Load, or V2L. Through V2L, the vehicle can provide electricity to compatible external equipment. This turns the car into a mobile power source that could be useful at outdoor locations, worksites or places where access to a conventional power supply is limited.
The A2 e-tron can also support Vehicle-to-Home, known as V2H. When connected to a compatible bidirectional DC wallbox and an appropriately equipped home, the vehicle can operate as a large battery storage system. Energy stored in the car can be used to supply household electricity, helping the vehicle work alongside the home’s energy system.
Audi is also preparing for Vehicle-to-Grid, or V2G, in the future. V2G would allow electricity stored in the A2 e-tron’s battery to be fed back into the public grid. Its availability will depend on the vehicle’s equipment, local regulations, compatible charging infrastructure, home installation requirements and suitable electricity tariffs.
With V2L and V2H, the A2 e-tron can already extend the use of its battery beyond driving. Future V2G capability could take this further by connecting the car directly to the wider energy network. Audi’s approach shows how an electric vehicle can function not only as a means of transport but also as a mobile and potentially grid-connected energy storage system.
