How do I properly maintain the battery in my Audi A2?

I have recently purchased an Audi A2 and want to make sure I am properly maintaining the battery for optimal longevity and performance. Can someone provide advice on best practices for battery maintenance?

Regularly check the battery's fluid levels and clean any corrosion off the terminals with a mixture of baking soda and water.

Invest in a good quality battery charger and use it when the car will be sitting for extended periods of time, such as during vacations.

Avoid overcharging the battery, as this can significantly reduce its lifespan.