What types of fire extinguishers can be used in cars?

[RowanFitz]

Vehicle-mounted fire extinguishers for cars can use dry powder fire extinguishers and water-based fire extinguishers. The following is the relevant introduction of fire extinguishers: 1. Dry powder fire extinguisher: Dry powder fire extinguisher is the most common type of fire extinguisher. This type of fire extinguisher is cheap and effective, with a wide range of applications, but it is complex to operate, not resistant to re-ignition, and difficult to clean up afterwards. 2. Water-based fire extinguisher: The mechanism of water-based fire extinguishers is based on the principle of physical fire extinguishing. After being sprayed, the extinguisher forms a water mist, instantly evaporating a large amount of heat from the fire scene, rapidly reducing the temperature of the fire scene, and inhibiting thermal radiation. Surfactants quickly form a water film on the surface of combustible materials, isolating oxygen, with the dual effects of cooling and isolation, while participating in extinguishing the fire, thereby achieving the purpose of rapid fire extinguishing.

[GavinDella]

Last time my buddy's car caught fire, luckily he had a fire extinguisher on hand. For cars, there are mainly three types: dry powder extinguishers are the cheapest and most versatile—a 1kg unit is enough for a sedan, but you’ll need to clean up the powder afterward. Water-based extinguishers are easier to handle and don’t corrode wiring—just wipe after use, ideal for those who dislike hassle. CO2 extinguishers are pricier but more efficient, especially safer for electric vehicle fires. Always buy ones with proper 3C certification and avoid cheap second-hand units. I keep a water-based extinguisher in a fixed spot in my trunk for easy access. Remember to shake the bottle monthly to prevent clumping, and replace it if the pressure gauge drops into the red zone.

[Dominick]

Our family road trip essentials include a car fire extinguisher, and we've researched many types. For small sedans, we recommend ABC dry powder extinguishers, which can put out mixed fuel and electrical fires, with 1-2 kg being the most practical. For new energy vehicles, special attention is needed—lithium battery fires reach extremely high temperatures, and ordinary extinguishers aren't powerful enough; it's best to choose a specialized extinguisher with a K55 marking. A commonly overlooked aspect is the mounting bracket, as an unsecured extinguisher rolling around during sudden braking can be dangerous. I've purchased a magnetic base that attaches securely to the trunk floor. The typical shelf life is three years, and before expiration, it's more cost-effective to have it recharged at a fire equipment store than to buy a new one.

[MadelynDella]

The most common fire extinguisher issues seen in auto repair shops over the years are with dry powder types, which dominate 80% of the market but are most prone to failure. When dampened and clumped, they simply won't discharge. It's recommended to check the pressure gauge needle monthly—only the green zone indicates safety. Water-based extinguishers are suitable for beginners, being simple to operate and pollution-free, but they can freeze in sub-zero environments. Northern car owners should opt for carbon dioxide types for greater reliability. Key reminder: Don't place them under the driver's seat! They might fly off and cause injury during a collision. The best locations are the passenger seat base or the side mesh pocket in the trunk, both easily accessible and away from high-temperature areas.