Power Positioning Functions

Sky-High Power Elevating Seat

Reach new heights with the power elevating seat. The seat is mounted into the chassis and can be raised stepless up to 40 cm. This provides the users with a better view and better access to their surroundings.

45-Degree Center of Gravity Tilt System

The center of gravity tilt system ensures pressure relief and a high degree of comfort. The tilt can also be used when traveling down a slope to compensate for the negative seat angle. This provides a safer and more stable seating position.

Biomechanical Power Recline and Elevating Legrest

180° power recline together with 180° power elevating legrest, total flat position allows the user to lie down straight. With the biomechanic design, the seat traverses with body movement, minimizing the effect of shearing force, keeping all the supports in the correct alignment with the body, and ensuring sitting stability.


Power Reach Out Motion is Karma's latest revolutionary power curve, which seamlessly integrates all four power positioning functions to amplify users' abilities to interact with their surroundings, fostering an empowered and independent lifestyle.


EVO Chassis
Front-Wheel Drive Performance

Best in Class Driving Range and Performance

Despite its low seat height, the front-wheel drive EVO chassis is compatible with up to 80Ah batteries, which yield up to 54 km of driving range. The narrow 610 mm width of the EVO chassis allows users to precisely navigate indoor environments.

Maintenance Friendly

The maintenance-friendly battery box design also allows technicians to remove and replace the battery while the user is seated.

Ultra-Low Seat Height

The EVO Altus and EVO Lectus LR feature an ultra-low 415 mm seat-to-floor height, enabling users to comfortably operate wheelchair-accessible motor vehicles and pull up to tables, offering increased comfort and accessibility in daily life.

Fully Adjustable Suspension

The strong and compact EVO chassis is equipped with a fully adjustable 4-wheel suspension system. The stiffness of the suspension can be configured according to the user’s weight, ensuring a smooth ride outdoors.

Seating System

Highly Configurable Rehab SeatAltus and Lectus

These products feature the best driving performance, biomechanical positioning, highly configurable and adjustable seating systems, and support for most third-party accessories and controllers, allowing users to enjoy a life of independence and unlimited possibilities.

Casing Colors

Product Model Evo Lectus LR
Seating System Minimum Maximum
Nominal seat width (mm/in)* 420 / 17 520 / 21
Nominal seat depth (mm/in)** 400 / 16 600 / 24
Backrest height without cushion (mm) 565 725
Backrest height with cushion (mm) 510670
Headrest height above seat (mm) 730 890
Armrest to seat distance without
cushion (mm)
255 375
Armrest to seat distance with cushion (mm)
180 300
Front location of armrest structure (mm)
0 410
Seat surface height at front edge
without cushion (mm)
415 865
Seat surface height at front edge with
cushion (mm)
Footrest to seat distance without
cushion (mm)
Footrest to seat distance with cushion (mm)255 630
Effective seat width (mm) 420 520
Effective seat depth (mm) 400600
Seat plane angle (X°) 0 50
Backrest angle (X°) -590
Seat to backrest angle (X°) 85180
Leg to seat angle (X°) 85 180
Driving CharacteristicsMinimumMaximum
Drive wheel size 3.00 - 8 (14")
Rear caster size 2.80/2.50 - 4 (9")
Overall length with legrest (mm) -1200
Overall width (mm) 610 660
Overall height (mm) 1115 -
Folded length (mm) 1150 -
Folded width (mm) 610 -
Folded height (mm) 745 -
Total mass (kg) -185
Total mass without batteries (kg) -140
Mass of the heaviest part (kg)-135
Maximum user weight (kg) -136
Drive range (km)*** - 54
Maximum speed forward (km) -12
Minimum braking distance from max
speed (mm)
2000 -
Obstacle climbing (mm)- 70
Ground clearance (mm) 70 -
Minimum turning radius (mm) 750-
Minimum turning radius without user
750 -
Reversing width (mm) 750-
Static stability downhill (X°) 9
Static stability uphill (X°) 99
Static stability sideways (X°) 9
Dynamic stability uphill (X°) 6
Ability to climb rated slope (X°)*** 12
Electrical System
Motor power (W) 320
Battery capacity (Ah) 80*2
Charger output current (A) 8
Battery Compartment (L x W x H) (mm) 265 x 175 x 235 (Single Compartment)
Electric ver.04

Remark :
* Nominal seat width is measured the width of seat cushion at 120mm in front of the backrest.
This value is mainly used in the product ordering process.
** Nominal seat depth is measured from the front end of the seat cushion to the back cushion. This value is mainly used in the product ordering process.
*** Drive range/ Ability to climb rated slope are estimated based on the following conditions: 20℃~35℃, 140 kg occupant, brand new fully charged batteries and driving on the flat road.
– Evo Lectus LR satisfies the requirements according to EN 12184 and the maximum occupant mass is 140 kg.
– The actual product specifications differ from the data in the table by ±1 cm ±0.5 kg.
– The actual product specifications may vary according to different configurations.
– KARMA reserves the right to modify information herein without further

Power Wheelchair Measurement Method

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