MDR Class I (2017/745/EU) Medical Device

Exceptional features, combined with a compact chassis

The Q4 is a compact 10 km/h Mid-Wheel Drive 6 powerchair, designed for indoor and outdoor use. The Q4 has been specifically designed with the ION Seat, which features two individual seat sizes. The mid-wheel 6 design enables a tight turning radius and outstanding performance making the Q4 an excellent choice for the demands of the most active client.



Weight capacity 7.7 st (113 kg) with standard comfort back
21.4 st (136 kg) with adjustable comfort back or slingback
Base weight without batteries 58.5 kg
Maximum speed Up to 6.21mph (10 kmh)
Length 902 mm
Width 610 mm
Ground clearance 63 mm
Turning radius 508 mm
Suspension ATX-suspension (Active-Trac with extra stability)
Drive wheels 14" pneumatic
Castor wheels Front: 6" solid
Rear: 6" or 8" solid
Drivetrain Two motor, mid-wheel drive 6
Brakes Intelligent braking, electromagnetic regenerative, disc park brake
Batteries 2x 62 Ah
Battery weight 62 Ah: 17.24kg each
Battery charger 8 Amp, off-board


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  • Mid-Wheel 6 allows six wheels on the ground for maximum stability;
  • Low impact OMNI-Casters (nylon, spherical-shaped casters) on front and rear prevent wheel hang-ups;
  • ATX Suspension (Active-Trac with extra stability) incorporates front OMNI-Casters for enhanced performance over more varied terrain.


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See our product range
and see what we have for you

Quantum Rehab powerchairs consist of a wide array of models, each incorporating various components to accommodate the comprehensive needs of individuals requiring a complex rehab product. The Edge 3 Stretto is one of the narrowest, most manoeuvrable power bases on the market! It is equipped with independent SRS (Smooth Ride Suspension), and optional 305 mm of iLevel power-adjustable seat height.