It’s not entirely correct to say that scooter batteries spontaneously ignite, although they may create that impression. There is always a technical reason why this happens, although that can occur spontaneously.
How Scooter Batteries Unexpectedly Catch Fire
Lithium-ion batteries in electric scooters store large amounts of energy in small spaces. These batteries can sometimes overheat, and even catch fire in transit in delivery vehicles:
- Those fires are usually the result of battery damage, poor charging practice, faulty batteries, exposure to high temperatures, or simply aging.
- Delivery workers may pack scooters tightly together inside their vehicles. This increases the fire risk, especially during hot weather.
- If a battery has a manufacturing defect, or damage from shock or vibration during transport, this can trigger a short circuit inside its cells.
- A short circuit creates heat very quickly. This heat spreads from one battery cell to another, in a chain reaction known as thermal runaway.
Charging scooter batteries in transit may also make them spontaneously ignite. This can be from overcharging, using an incorrect charger, or charging damaged batteries. Once a lithium-ion battery overheats and catches fire it burns fiercely, and may release toxic smoke and flammable gases.
What Happens When Lithium-Ion Batteries Ignite?
Transport companies therefore need to take extra precautions, when transporting electric scooters. These precautions include battery inspections, fire-resistant storage containers, ventilation systems, and loading procedures.
These safety measures may help reduce the chance of serious vehicle fires, but these still do occur. Take the example of the recent Toledo, Ohio fire, when 40 lithium-ion batteries in scooters ignited in a compact delivery vehicle.
WTVG news channel confirms that 14 of those batteries entered uncontrolled thermal runaway. This again highlights the need to take extra care, especially when transporting large numbers of electric scooters.
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