Can Power Banks Be Left in Cars?
3 Answers
Power banks can be placed in shaded areas inside the car to avoid direct sunlight. Extended information about power banks is as follows: 1. Definition: A power bank refers to a device that can directly charge mobile devices and has its own energy storage unit. The main types of power banks currently on the market are multifunctional, most of which are equipped with standard USB outputs. 2. Function: They can basically meet the needs of various digital products commonly found in the market today, such as mobile phones, MP3 players, MP4 players, PDAs, PSPs, Bluetooth headsets, and digital cameras. A power bank is essentially a convenient and portable high-capacity power source. It is a portable device that integrates energy storage, voltage boosting, and charging management. 3. Usage: The power bank's own charging plug can charge mobile devices directly through an AC power source, and it has its own energy storage device. It is equivalent to a hybrid of a charger and a backup battery. Compared to a backup power source, it simplifies the need for a charging plug, and compared to a charger, it has its own energy storage device, providing a backup power source for digital products when there is no direct power source or when outdoors.
Once I left a power bank in my car during summer, and after being exposed to the scorching sun, its casing deformed—it was really dangerous. The temperature inside a car can skyrocket quickly when parked outdoors, reaching over 60°C. Lithium-ion batteries are highly sensitive to high temperatures, which can trigger thermal runaway or even explosions. I must advise avoiding leaving them in the car for extended periods, especially when parked—better to carry them with you. If you must leave one in the car, opt for the trunk or glove compartment to shield it from sunlight, and wrap it in an insulated bag. Don’t take safety risks; park in shaded areas during peak heat to protect both the battery and your belongings. Ideally, switch to charging via the cigarette lighter or USB port to minimize hazards. Regularly inspect your power bank’s condition, and replace it if you notice any deformation.
When frequently driving for trips, I find it convenient to keep a power bank in the car for emergencies, but direct sunlight can shorten battery life. I've tried storing it in the small compartment under the dashboard to avoid direct exposure. Placing it near the center console ensures better ventilation and reduces overheating. While driving, the stable cabin temperature makes short-term storage acceptable, but it's best to remove and carry it in your pocket before parking. Opt for a lightweight power bank, as fast charging may fail in high temperatures. Balance convenience and safety—avoid leaving it in extreme heat for too long, and prioritize using the car charger for power supply.
