What is the best way to maintain the battery of an Audi 80?

I recently purchased a used Audi 80 and I want to make sure I'm taking care of the battery properly. Any tips for prolonging its life and avoiding potential issues?

Regularly check the battery's terminals for any signs of corrosion and clean them with a mixture of baking soda and water. This will ensure a good connection and prevent any buildup that could affect the battery's performance.

Invest in a battery tender or maintainer, especially if you won't be using the car for an extended period of time. This will keep the battery charged and prevent it from draining completely.