Where is the safest place to put a power bank in a car?
3 Answers
It is unsafe to leave a power bank in a car, and it is not recommended to leave a power bank unattended in a vehicle for extended periods. Below are relevant details about storing power banks in cars: 1. Reasons: Power banks use lithium batteries, whose chemical properties are not absolutely stable. Whether due to thermal expansion/contraction, battery self-leakage, or impacts/drops, issues may arise at any time. If placement in unattended locations is necessary, it is advised to remove surrounding flammable materials or use specialized explosion-proof flame-retardant bags for lithium batteries. Mobile phones also contain lithium battery cells, and poorly manufactured or defectively designed waterproof phones carry certain risks. 2. Power bank functionality: A power bank is a portable charger that integrates power supply and charging capabilities. Typically using lithium battery cells as energy storage units, they provide convenient and quick charging for digital devices like smartphones and tablets anytime, anywhere.
As a frequent driver, I take the safe storage of power banks in my car very seriously, especially since the interior can become like a steamer in summer, with temperatures soaring above 70°C, which can cause lithium batteries to swell or even catch fire. My first choice is the glove compartment, as it's cool, shaded, and relatively stable. The trunk is also an option, but the power bank should be placed in a fixed box to prevent collisions. Small compartments under the center console or beneath the seats are good too, but they should be padded or secured to prevent sliding. I remember once leaving a power bank on the dashboard, and the casing deformed under the sun, nearly causing an accident. Now, I always use a sunshade or an insulated bag when parking. An extra tip is to avoid parking in high-temperature areas and to regularly check the battery's condition. Safe storage is crucial for daily life, and developing good habits ensures a more secure journey.
From a technical perspective, the lithium battery in a power bank exhibits increased chemical activity under high temperatures, with risks escalating sharply above 45°C, potentially leading to thermal runaway. I usually place it near the footwell mat or in the door storage compartments, as these areas are cooler and well-ventilated; avoiding direct sunlight zones like the roof and dashboard helps reduce heat buildup. Using a metal container or insulating materials to wrap it can buffer vibrations and radiant heat. Monitoring lithium battery aging is also crucial—regularly check for signs like bulging or discoloration. Additionally, cabin temperature is heavily influenced by weather; in summer, cracking windows slightly before parking or using a solar-powered ventilator can aid in cooling. Securely placing it to prevent accidental fire hazards is a wise choice.
