You need to learn to read for comprehension. The important part...

You need to learn to read for comprehension. The important part of what I wrote was "regenerative", not "braking". The point isn't to slow the plane down - you have flaps for that. The point is to use some of the airflow over the wings to recharge the batteries, so that when it's time to actually land you have enough juice in them for a bit of extra powered flight - you know, to level off, look around for a runway, that sort of thing.