Available
Quantum J4 specifications
Tilts the seating system as a unit for positioning, comfort, and pressure management.
Powered leg rests let you raise or lower your legs for added comfort and positioning flexibility.
The J4 uses a compact mid-wheel drive layout designed for responsive maneuvering in tighter spaces.
These are manufacturer specifications for the Quantum J4 platform. Actual performance and dimensions may vary depending on seating configuration, user weight, terrain, battery condition, and operating conditions. This wheelchair is currently configured with a 20" × 19" seat. The seating system can be configured for different seat widths within the platform’s available range, and the armrest height, backrest height, and headrest position are also adjustable within the installed hardware and manufacturer limits.
This 2022 Quantum J4 was used for just a few months before being placed in garage storage, where it remained for several years. During that time, the original batteries lost their ability to hold a charge and have since been replaced with brand-new gel batteries. The seat cushions, backrest upholstery, and other padded surfaces are exceptionally well preserved, showing very little visible wear. The wheelchair comes with its battery charger.
Complete your order
Enter your contact and delivery details, select your preferred payment method, and submit your order. Our team will confirm the details with you before requesting payment.
After you place your order, our team will contact you to confirm your seating requirements and order details. Once everything is confirmed, we’ll send you a secure payment invoice.
Questions about this Quantum J4
Helpful details about this chair’s condition, powered functions, fit, delivery, warranty, and returns.
This Quantum J4 was used for only a few months before being placed in garage storage for several years. The original batteries were replaced with brand-new gel batteries after they stopped holding a charge. The seat cushions and backrest upholstery remain exceptionally well preserved, with very little visible wear. The photos show the actual wheelchair offered for sale.
This wheelchair features power tilt and power elevating leg rests. Power tilt allows the entire seating system to tilt backward while maintaining the angle between the seat and backrest. The powered leg rests can be raised or lowered electronically for more comfortable leg positioning. Both functions are operated through the wheelchair's controls.
Yes. This Quantum J4 currently has a 20 × 19-inch seat and supports users weighing up to 300 lb. Before shipping, we can discuss your height, weight, and seating preferences and help adjust the armrests, joystick position, leg rests, and available seating settings within the wheelchair's existing configuration.
Free delivery is included across the USA. For freight shipments, the wheelchair is securely packaged on a pallet and delivered to your residential address. Orders are typically prepared and dispatched within 3 business days, with transit usually taking 7–14 days depending on your location. Our team will confirm the delivery arrangements before shipment.
Your purchase includes a 90-day limited warranty covering qualifying mechanical and electrical defects. If the wheelchair isn't suitable for your needs, you can request a return within 30 days. For standard returns unrelated to defects, the buyer is responsible for the original delivery cost and return shipping, even though delivery is included in the purchase price. Please review our Returns & Warranty Policy for complete terms.