Basic Specifications Product Type: Foldable Electric Wheelchair. Model: K803. Material: Aluminum Alloy. Motor Power: 250W (with disconnect switch). Battery Type: Lithium-ion. Battery Capacity: 12 Ah. Controller: 50A. Charging Time: 4 – 6 hours. Range: Up to 15 km per charge. Maximum Speed: 7 km/h. Maximum Load: 90 kg for 18-inch size 120 kg for 20-inch size Chair Weight: 23 kg (without battery). Available Sizes: 18 inches and 20 inches. Cushion Thickness: 5 cm. Maximum Climbing Angle: 10 degrees. Front Wheels: 8 inches (puncture-proof). Rear Wheels: 10 inches (puncture-proof).