This is a safe shot in badminton and if played correctly it will force an opponent to hit an upward return, giving the other player a chance to attack.
How: The backhand drive is the same as the forehand version except for the slight grip change, and starting in the back swing with the palm facing down and finishing the stroke with it facing up, opposite to that of the forehand.
To get to the shuttle before it drops too low extend the dominant leg towards the shuttle and reach with the racket arm. Then pivot and turn in the direction of the shuttle, with the wrist in the cocked position for the back swing. This should mean the racket is parallel to the floor. Swing forward and transfer body weight on to the dominant foot. Make sure to extend the racket arm, roll the forearm over in a supination movement and uncock the wrist to provide the power.
The final stage of this stroke is the follow through when the arm should travel in line with the shuttles path. Then flex and extend the dominant leg to force the body back toward the center of the court.