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Guidance on the charging of electric mobility scooters and powered wheelchairs

Appendix 1

  • Do not leave the appliance charging overnight or while unattended.
  • Appliances must not be charged in bedrooms while occupants are sleeping.
  • Charging must not take place in corridors or any designated emergency escape routes.
  • Charging in kitchens is prohibited.
  • Charging should occur only in well-ventilated areas to prevent overheating and accumulation of heat
  • Fire doors are to always remain closed, they must not be propped open during charging.
  • Charging areas must be equipped with functional fire detection systems.
  • The appliance should remain in sight while charging to allow for immediate response if an issue arises.
  • The battery and charger must not be covered during charging, as this can lead to overheating and fire.
  • Electrical sockets must not be overloaded during the charging process.
  • Overcharging of the battery must be avoided to prevent overheating and potential fire hazards. You must stop charging as soon as the battery is fully charged.
  • Unplug the appliance immediately once charging is complete.
  • Do not charge or store batteries in direct sunlight or in environments with high temperatures.
  • Charging must not occur near combustible materials or flammable substances.
  • Only use manufacturer approved battery packs and chargers and always follow the manufacturer’s instructions when charging.
  • It is recommended that Portable Appliance Testing (PAT) be arranged for the appliance’s charging equipment, however, the University does not offer this service.
  • Regular servicing of the appliance should be carried out in accordance with the manufacturer’s maintenance schedule.
  • In the event of a fire involving a lithium-ion (rechargeable) battery, do not attempt to extinguish the fire yourself.
    • Water is not effective and may exacerbate the situation.
    • Evacuate the area immediately and contact emergency services by calling 999.   Follow OBU procedure on discovering a fire.

When to stop charging batteries

Charging of batteries must stop immediately if any of the following warning signs are observed, as they may indicate a serious safety risk:

  • Overheating – If the battery or device becomes excessively hot to the touch.
  • Deformation – If the battery appears swollen or misshapen. This includes visible lumps, bulging, or any signs of leakage from the battery or device.
  • Unusual Noise – If the battery emits abnormal sounds such as hissing, popping, or cracking.
  • Odour – If there is a strong, unusual, or chemical-like smell coming from the battery or device.
  • Degraded Performance – If the battery fails to fully charge, is taking significantly longer to charge, or exhibits any unusual charging behaviour.
  • Smoke – If smoke is visible coming from the battery or device.