Should I charge my Audi e-Tron before the battery is completely drained?

I've heard conflicting opinions on whether charging the battery before it is completely drained can harm the battery's lifespan. What is the best practice for prolonging the battery's longevity?

It's not necessary to fully drain the battery before charging it, but it's also not recommended to keep the battery constantly at 100% charge. Ideally, you should aim to keep the charge between 20-80%. This will help preserve the battery's overall health and lifespan in the long run.