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//  NJ1 e-assistant BionX P 250

NJ1 e-assistant BionX P 250 (Deore XT)
The NJ1 e-assistant always permits easy and independent forward motion with your own wheelchair. The BionX P 250 drive system supports you when you are pedalling at the set support level (4 support levels 35 %, 75 %, 150 % and 300 %) up to 24.9 km/h. A speed of up to 6 km/h can be reached using the starting assist without pedalling. The starting assist is operated using a thumb control switch (below the display or on the handlebar) or via a chin control lever.

The traction device is available with a back-pedal brake, which makes its use particularly easy for paraplegics. In addition, there is also the option of a crank freewheel at the back: The cranks can then be uncoupled for manoeuvring and it can be moved backwards easily using the handrims.

The BionX P 250 drive system with higher torque is powerful for permanent support. No switch is integrated in the motor, so that you can choose from a large selection of complementary derailleurs.

Downhill, the recuperation can be manually activated in four levels.

The traction device can be operated on public roads, as part of the Pedelec rules, without insurance and registration.

A comprehensive range of accessories is available, also for function-impaired users.

Lightweight from 14.6 kg with packing size from 115 x 43 x 50.8 cm
  • Easily loaded into the car and simple to transport.

Central or front adapters to choose from
  • Central adapter: Mount to axle or cross-tube (with rigid frames) under the seat, or to the folding mechanism (with folding frames).
  • Front adapter: Mount to the front frame tubes. Can be adjusted to suit different tube diameters and thereby also be used for third-party wheelchairs.
  • It can be removed from the wheelchair with just a few actions.
  • When uncoupled from the wheelchair, there is hardly any more weight on the wheelchair and thereby no functional impairment (e.g. folding mechanism).
  • One adapter can be used for all PRO ACTIV adaptive bikes, towing devices and attachments with a corresponding wheel size.

Optimal adaptation to the requirements and abilities of the driver
  • Thanks to the various bottom bracket supports and adjustment options on the adapter, the continuous adjustment to the user is possible.
  • The adjustable bottom bracket support (optional) can be adjusted in its angle and length.

An optional parking stand can be folded away while driving to save space
  • Makes coupling and uncoupling easier as the towing device is parked at the required adaptation height.
  • When uncoupled, the towing device is stable.

Selection of various gear shift systems
  • Derailleurs: Shimano Deore 27 speed, Shimano Deore XT 27 speed, Shimano Deore XT DYNA SYS 30 speed.
  • Other components on request.

Effective brakes
  • Rim brake: Shimano V-Brake.
  • Magura hydraulic disc brakes.
  • Back-pedal brakes (optional).

Batteries have a long range
  • Lithium-Manganese system.
  • Selection of rechargeable batteries with ranges of up to 150 km.
  • Easy to switch between 2 rechargeable batteries via change plug connection.

BionX P 250 drive
  • Powerful drive for permanent support.

Drive system simple to operate via the LCD display
  • Display is simple and intuitive to operate.

Back-pedal brake and crank free-wheel
  • Operation made easier for paraplegics with the back-pedal brake.
  • The crank free-wheel means that you can drive backwards using the handrims or manoeuvre without the cranks turning too.
Total weight without battery and adapter from 14.6 kg
Central adapter weight from 2.8 kg with rigid frame wheelchairs; from 3.6 kg with folding-frame wheelchairs
Front adapter weight from 3.6 kg
Max. load weight Standard up to 120 kg towed weight and 10 kg load capacity;
More than 120 kg on request!
Pack size from 115 x 43 x 50.8 cm
Possible drive wheel sizes 20″, 24″
Battery LiMn 48 V, 11.6 Ah, 556 Wh, range approx. 45-75 km
Battery weight 3.7 kg (423 Wh) or 3.8 kg (556 Wh)
Battery charging time approx. 7 hrs.; battery will be charged up to 80% after 1 hour
Switching between 2 batteries using an exchange plug connection
Recuperation (battery re-charging) 4 recuperation levels
Battery air transport 
  • Generally, the lithium-based rechargeable batteries used are considered dangerous goods for air transportation. A ”right” to transport them by air cannot be assumed.
  • The decision about their transportation lies solely with the airline. This should be clarified with the airline in due time before the flight or booking.
Motor BionX P 250
Motor weight 4.7 kg
Motor performance 250 W
Motor torque 9/40 Nm (nom./max.)
Support 4 support levels: 35%, 75%, 150%, 300%
Display LCD display
Starting assistance/pushing assist Starting assistance up to 6 km/h forwards
  • When using as a pure traction device, a speed of up to 6 km/h can be achieved using the starting assistance.
  • Motor-based support up to a speed of 24.9 km/h. At higher speeds, no more motor-based support is provided to comply with the legal requirements of a Pedelec system.
Derailleur No integrated switching in the motor, choice of supplementary derailleurs
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PROACTIV GmbH Rehatechnik PRO ACTIV Reha-Technik GmbH
Im Hofstätt 11
72359 Dotternhausen
Tel +49 7427 9480-0