Where is the battery of Audi A4 located?

[MackenzieDella]

The battery of Audi A4 is located in the trunk. Lift the floor panel, take out the spare tire, and remove the plastic cover to see the battery. The functions of the battery are: 1. When starting the engine, the battery supplies power to the starting system, ignition system, and electronic fuel injection system; 2. When the engine is stopped or idling at low speed, it powers the vehicle's electrical equipment; 3. When the generator's output is insufficient, it supplies power to the electrical equipment; 4. It mitigates voltage surges in the electrical system and protects the vehicle's electronic devices; 5. It stores excess electricity generated by the alternator. Taking the 2021 Audi A4 as an example, it belongs to the mid-size car category with body dimensions of: length 4762mm, width 1847mm, height 1436mm, a wheelbase of 2825mm, and a curb weight of 1665kg.