How to maintain the battery of an Audi A3?

I have recently bought an Audi A3 and I want to know how to properly maintain the battery to ensure its longevity. Can anyone provide some tips?

Regularly check the battery terminals for corrosion and clean them with a baking soda and water mixture if necessary. This will prevent any build-up that can affect the efficiency of the battery.

Invest in a good quality battery charger and use it when the car is not in use for a long period of time. This will keep the battery charged and avoid any issues with starting the car.

Avoid using electronics such as the radio, air conditioning, and lights when the car is idle to reduce the strain on the battery. This will also help prolong its life.