Key differences between the Permobil M4 Nexa and the Permobil M3 Corpus
Powerbase size
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Permobil M4 Nexa
Permobil M4 NexaThe Permobil M4 Nexa is the larger of the two Mid-Wheel-Drive powerchairs.
The base width of the Permobil M4 is 540mm, and the overall length of the Permobil M4 is 850mm.The overall weight of the Permobil M4 Nexa is 14kg with 54ah batteries, and 160.5kg with 68ah batteries.
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Permobil M3 Corpus
Permobil M3 CorpusThe Permobil M3 Corpus is the smaller of the two Mid-Wheel-Drive powerchairs.
The base width of the Permobil M3 is 615mm, and the overall length of the Permobil M3 is 1080mm - which includes the seat.
The overall weight of the Permobil M3 Corpus with 65ah batteries is 176kg.
Seat Height
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M4 Nexa
Permobil M4The M4 Nexa is Permobil's lowest mid-wheel drive chair. The LH and Jr configurations have a 390mm seat-to-floor height; the standard set-up is 430mm. Either is lower than the M3 Corpus, which makes independent transfers easier, gets your knees under standard tables and desks, and gives you more headroom in a wheelchair-accessible vehicle. With Active Height you still get 300mm of lift on top of that, so a low seat doesn't mean losing eye-level reach.
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M3 Corpus
Permobil M3
The M3 Corpus has a 445mm (17.5") seat-to-floor height. That extra height suits taller users and gives more ground clearance and a slightly more commanding driving position outdoors, but it's the number most often behind a tight fit in vehicles and under tables. Active Height adds 300mm of lift.
Performance
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Permobil M4
M4 NexaThe M4 Nexa is offered at 6 km/h or 10 km/h (6.2mph), programmable to suit the user and the environment. Battery options are 52Ah or 68Ah, with a range of up to 33km on the larger pack. The base is built for indoor manoeuvrability first – a 445mm turning radius means it turns in a hallway – with enough performance for everyday outdoor use. Maximum user weight is 136kg.
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Permobil M3
M3 CorpusThe M3 Corpus runs at 10 km/h with 300W motors and the R-Net 120A power module. It comes with 65Ah Permobil hybrid batteries as standard for up to 32km, or 85Ah for up to 40km. With 7" castors front and rear it stays compact for indoor use while handling longer outdoor journeys comfortably. Maximum user weight is 150kg.
Seating
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Nexa
M5The M4 Nexa introduces Permobil's new Nexa seating system. Seat widths run from 300mm to 560mm and depths from 250mm to 560mm, with stepless adjustment of width, depth and armrests – seat depth can be set with the user in the chair. It's a biomechanical design that keeps the body supported as the power functions move, and it accepts the full range of Permobil backs, cushions and positioning hardware, from a simple Comfort Curve back to ROHO cushions and Bodilink supports. The 300mm starting width is what makes the Jr configuration possible.
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Corpus
M3
The M3 Corpus uses the long-established Corpus seating system. Seat widths run from 17" to 23" (430–585mm) and depths from 14" to 22", with backrest heights of 20" and 23" to 28". Corpus is adjustable, proven, and compatible with a vast range of seating, positioning and moulded solutions built up over many years – including the Supportec Evoshape system.
