Designed for your mobility independence. SIDE BATTERIES: Slide in Dual Side Batteries you can pop out quickly if needed when transporting, makes the chair lighter because 8 lbs matter. Lithium -Ion, Safe, Dry, filled up with the highest quality cells. SIMPLE TO OPERATE - Using an innovative joystick design and an updated electric magnetic breaking system, our wheelchair gives you superior motion control and quick stopping. It's adjustable anti-leaning rear design also keeps it perfectly stable.