How does the e-tron's regenerative braking feature work?

I've heard that the Audi e-tron has a regenerative braking feature that helps with energy efficiency. Can someone explain how this works and if it's something I should always have on or if there are certain times when it's better to turn it off?

The regenerative braking feature in the e-tron uses the electric motor to slow down the vehicle and convert kinetic energy back into usable electricity. This allows for increased battery life and overall energy efficiency.

I recommend always keeping the regenerative braking feature on as it not only helps with energy efficiency, but also provides a smoother driving experience. Only turn it off if you need to coast for a longer period of time.