Hey, So the Regen is first of all activated automatically under 85 or 80 percent SOC, so you can use the throttle to your advantage and can slow down the scooter by twisting it in the opposite direction. if you are on a downhill/slope, Do not depend on the regen to get the scooter to slow down as it is not as powerful as the Disc brakes of course. Regen braking can be used on flatter/leveled roads at decent levels of speeds to slow down which may avoid sudden braking situations.