Will a Power Bank Explode if Left in a Car During Summer?

[VanEloise]

High temperatures may cause explosion or spontaneous combustion. Most power banks contain lithium-ion batteries, which are highly prone to explosion when exposed to direct sunlight in a confined car environment where temperatures can exceed 80°C. Therefore, it is strongly advised not to leave power banks in vehicles, especially for extended periods, as this poses significant safety risks. Below is relevant information about power banks: 1. Power Bank Overview: A power bank is a portable device that can directly charge mobile devices and contains its own energy storage unit. The mainstream products on the market are multifunctional power banks, most equipped with standard USB outputs, capable of charging various common digital products such as smartphones, MP3/MP4 players, PDAs, PSPs, Bluetooth headsets, and digital cameras. Essentially, a power bank is a convenient, portable, high-capacity power source that integrates energy storage, voltage boosting, and charging management. 2. Power Bank Functions: With its built-in charging plug, a power bank can charge mobile devices directly from an AC power source while storing electricity. It combines the features of a charger and a backup battery, eliminating the need for a separate charging plug compared to backup power sources, and providing stored power for digital devices when no direct power source is available or during travel.

[Morgan]

I remember the temperature inside the car gets terrifyingly high in summer, often exceeding 60°C under direct sunlight. Leaving a power bank there poses significant risks, as lithium batteries can become unstable under high temperatures. The internal chemical reactions may go out of control, leading to overheating or even explosion. I once experienced this myself—I forgot to take out my power bank, and when I returned, it was alarmingly hot to the touch. I quickly moved it away to avoid disaster. Simplified explanation: heat increases internal pressure in the battery, similar to blowing up a balloon until it bursts. Don’t take risks for convenience—make it a habit to put it in your bag and take it with you when parking. Safety first, and share this tip with friends to prevent accidents. Power bank quality also matters—choose reputable brands, as cheap ones are more prone to failure. In short, a car isn’t a storage room—don’t leave electronic devices inside during hot weather. Sharing this small tip can help protect your car and your family’s safety.

[StAutumn]

From a safety perspective, power banks left in cars during summer may explode, especially since lithium batteries have poor high-temperature tolerance. Heat can cause ion activity to spiral out of control, triggering thermal runaway. This is similar to a pressure cooker overheating and bursting. I've researched cases where many vehicles caught fire due to overlooking the rapid temperature rise inside cars. Manufacturers warn against storing them in extreme heat. Recommendation: Take them out when parking or place them in a shaded spot. Regularly monitor battery health—aged ones are more fragile. Quick tip: Using an insulated bag? The risk remains; better to develop a habit of storing them properly. Safety isn't about gambling—educate yourself and others to live with fewer worries.

[SanRebecca]

Don't leave power banks in the car during summer. Heat waves can easily cause lithium batteries to overheat and explode. The principle is simple: high temperatures accelerate uncontrolled chemical reactions. Car temperatures can rise above 60°C, turning power banks into time bombs. For safety, always take them with you when exiting the car. I once had a close call and never take risks after that lesson. Remember one thing: lithium batteries prefer cool environments, so always remove them from hot cars. Reduce property damage risks and protect yourself.