Wheelchairs - Part 4: Energy consumption of electric wheelchairs and scooters for determination of theoretical distance range

ISO 7176-4:2008 specifies methods for determining theoretical distance range of electrically powered wheelchairs, including scooters, using measurements of energy consumed while driving and the nominal energy capacity of the wheelchair's battery set. It is applicable to electrically powered wheelchairs with a maximum nominal speed no greater than 15 km/h, intended to provide indoor and/or outdoor mobility for one disabled person whose mass is within the range represented by ISO 7176-11. ISO 7176-4:2008 also includes requirements for test reports and information disclosure.

Other parts of this product are listed below:

Wheelchairs -- Part 1: Determination of static stability
Wheelchairs -- Part 2: Determination of dynamic stability of electric wheelchairs
Wheelchairs - Part 3: Determination of effectiveness of brakes
Wheelchairs - Part 5: Determination of dimensions, mass and manoeuvring space
Wheelchairs - Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs
Wheelchairs -- Part 7: Measurement of seating and wheel dimensions
Wheelchairs -- Part 8: Requirements and test methods for static, impact and fatigue strengths
Wheelchairs - Part 9: Climatic tests for electric wheelchairs
Wheelchairs - Part 10: Determination of obstacle-climbing ability of electrically powered wheelchairs
Wheelchairs -- Part 11: Test dummies
Wheelchairs -- Part 13: Determination of coefficient of friction of test surfaces
Wheelchairs - Part 14: Power and control systems for electrically powered wheelchairs and scooters - Requirements and test methods
Wheelchairs -- Part 15: Requirements for information disclosure, documentation and labelling
Wheelchairs - Part 16: Resistance to ignition of upholstered parts - Requirements and test methods
Wheelchairs - Part 19: Wheeled mobility devices for use as seats in motor vehicles
Wheelchairs - Part 21: Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers
Wheelchairs -- Part 22: Set-up procedures
Wheelchairs - Part 23: Requirements and test methods for attendant-operated stair-climbing devices
Wheelchairs - Part 24: Requirements and test methods for user-operated stair-climbing devices
Wheelchairs - Part 26: Vocabulary