3 groups of objects that pose a risk of causing car fires in hot weather

According to the police, there are 3 groups of objects that should not be left in cars exposed to direct sunlight in the summer. First are battery-powered household electronic devices such as computers, phones, backup chargers...

The reason is because lithium-ion batteries are very sensitive to temperature, when left in a closed car parked in the sun, the battery can melt, leading to the risk of fire or explosion.

Image of car fire. Photo: CACC

Second are compressed gas cylinders or cylinders containing flammable and explosive substances such as perfumes, mineral sprays, deodorants, lighters, or fire extinguishers. The propellant inside the cylinders is highly flammable and when the cylinder shell heats up, the internal pressure increases, which can cause the cylinder to explode or rupture, releasing flammable propellants, which pose a fire risk if near a spark.

Third are objects that have the ability to reflect and converge light such as water bottles, sunglasses, reading glasses, etc. Plastic or glass bottles are often designed in a cylindrical shape, containing water inside, which will form a convex lens. When sunlight shines on them, the converging lens role of the water bottle will "come into play".

If the exposure time is long enough and the sunlight is strong enough, the rays can converge at one point and burn interior surfaces such as upholstery or carpets... which can even cause a car fire. The risk to eyeglasses is similar.

The general solution for the above cases if you have to leave them in the car is to put flammable items in bags, bags, or backpacks, and keep them in places that are not exposed to direct sunlight from the windows. If it is not really necessary, do not leave them in the car, keep them at home to ensure safety.

When it is sunny, try to find a covered or shady place to park your car. If you must park your car in the sun, protect your car from the heat by using sunshades.