As the UK experiences its third heatwave of the year, with temperatures expected to reach 30C or above, experts are warning drivers not to leave vapes in their cars due to the risk of battery explosions. The dramatic temperature shifts inside a sealed vehicle can cause vape batteries to swell, leak, or explode, potentially sparking fires that result in thousands of pounds in damage and serious health risks.
Why Heat Poses a Danger to Vape Batteries
Markus Lindblad, Head of Legal and External Affairs at Haypp, explains that all vapes rely on batteries sensitive to extreme temperature changes. On a hot day, a parked car's interior can become 30C to 40C hotter than outside, as the glass traps sunlight like a greenhouse. "If you leave your vape in the car and it's exposed to the sun for a long period, the vape battery is at risk of swelling, leaking, and in some cases, can potentially cause the battery to explode," Lindblad said.
E-Liquid Leaks and Device Damage
Extreme temperature fluctuations can also cause e-liquid to become runny or the vape tank to expand, leading to leaks. A leaking vape creates a sticky mess that is difficult to clean from car interiors and may cause skin irritation. Lindblad advises that if a vape has leaked, it should not be used and must be disposed of correctly. Additionally, heat can damage vape components, reducing battery lifespan and ruining coils, screens, or tanks.
Insurance Implications of Vape-Caused Fires
If a vape triggers a car fire, owners may struggle to claim on insurance. Lindblad notes that some policies exclude coverage for fires caused by vaping devices, arguing that the owner increased the vehicle's fire risk. This could leave car owners paying for thousands of pounds in damage out of pocket.
What to Do If Your Vape Overheats
If a vape has been left in a hot car for a prolonged period, Lindblad recommends cooling it down safely by placing it in a cool, dark location or wiping it with a cold, damp cloth and letting it air dry. Crucially, do not submerge the vape in water, as this could increase the risk of battery explosion.
Best Practices for Storing Vapes in Cars
Ideally, vapes should be removed from the car entirely. If that is not possible, parking in the shade or storing the device in the glove box away from direct sunlight is advised. Vapes should be kept at room temperature to avoid damage and fire risk.
Legal Considerations: Vaping While Driving
Vaping at the wheel is not directly illegal in the UK, but if vapour obstructs vision or the device causes distraction, drivers could be charged with driving without due care and attention. Penalties range from a £100 fine and three penalty points to £2,500 and a potential driving ban.
