What is the most efficient way to charge a BMW i7 battery?

I recently purchased a BMW i7 and I'm wondering about the best way to charge the battery. Should I use a level 1 or level 2 charger? How long does it take to fully charge the battery? Any tips on maximizing the battery's lifespan?

For the most efficient charging, I recommend using a level 2 charger. It will fully charge your battery in about 8 hours. Additionally, try not to let the battery drain below 20% and avoid fast charging too often to prolong its lifespan.

I've found that using a level 1 charger overnight works well for me. It's also important to periodically let the battery run down completely before charging it up again. This helps calibrate the battery's indicator and ensures accurate readings.

In my experience, it's best to charge your BMW i7's battery whenever possible, even if it's just for a short time. This will help prevent the battery from fully draining and maintain its overall health.