How to properly maintain the battery of my Audi A2?

I've noticed that my Audi A2's battery isn't performing as well as it used to. What steps should I take to maintain it properly?

Regularly clean the battery terminals to remove any buildup of dirt and corrosion. This will ensure a strong connection and prolong the life of your battery.

Check the water level in the battery regularly and top up with distilled water if necessary. Low water levels can lead to damage and reduced performance.

Avoid leaving your car in extreme temperatures for extended periods of time as this can cause damage to the battery. If possible, park in a garage or shaded area.