Is it safe to leave AA batteries in the car during summer?

[JamesMarie]

It is not safe to leave AA batteries in the car during summer. Here are the specific reasons: Impact on the vehicle and batteries: During summer, due to direct sunlight, the temperature inside the car can reach 60-70 degrees Celsius. The interior becomes extremely hot and remains in a sealed state. Storing batteries in such conditions, especially nickel-metal hydride or lithium batteries (which are hermetically sealed), can cause a rapid increase in internal pressure due to high temperatures, potentially leading to explosions. Even if they don't explode, the high temperature can deform the internal electrodes and damage the batteries. Impact on human health: Other non-sealed batteries can also suffer from evaporation of internal electrolytes under prolonged exposure to sunlight, resulting in battery failure. All batteries have a reasonable operating temperature range, and excessively high temperatures are detrimental. The evaporated substances can also be harmful to human health.