What is the best way to maintain my Volkswagen Passat's battery life?

I'm wondering what steps I can take to ensure my Volkswagen Passat's battery lasts as long as possible. Any tips or tricks would be greatly appreciated!

Regularly checking the battery's electrolyte level and keeping the terminals clean can help extend the lifespan of your Passat's battery.

In addition to keeping the battery clean and checking the electrolyte level, make sure to replace your battery if it's over 3-4 years old.

To really get the most out of your battery, invest in a trickle charger and use it during periods of prolonged inactivity, such as long vacations or storing the car in the winter.