What is the best way to extend the lifespan of an Audi A2's battery?

I recently purchased a used Audi A2 and I am worried about the battery's lifespan. What steps should I take to ensure it lasts as long as possible?

Regularly check the battery's voltage to determine its state of charge. A practical way to do this is by using a multimeter. Keep the voltage at a stable level to prevent battery failure.

Avoid parking your car for extended periods in hot weather. High temperatures can significantly reduce the lifespan of your battery. Whenever possible, park in a shaded area.

Make sure all electrical components are turned off when the car is not in use. This will prevent any drain on the battery and prolong its lifespan.