Can a leaking car battery cause spontaneous combustion?

[McKing]

Car battery leakage can lead to spontaneous combustion. This is because battery fluid leakage poses a risk of thermal runaway, which reduces the acid inside the battery and increases internal resistance during charging and discharging, generating more heat. The heat causes the float charge current to rise, leading to battery expansion and temperature increase, ultimately resulting in thermal runaway and spontaneous combustion. Causes and solutions for battery leakage: Generally, battery leakage most commonly occurs due to poor sealing between the upper cover and base tray, causing cracks. Leakage from safety valves and terminal connections can also happen. Solutions: Inspect the battery's exterior for cracks, which can be repaired using plastic welding, then add appropriate amounts of sulfuric acid and purified water. Check safety valves for leakage signs and repair or replace them if necessary. If the battery case is damaged and most of the electrolyte has leaked, replace the battery entirely. Battery maintenance precautions: Before turning off the vehicle, shut down all electrical devices. Avoid long-term parking; restart the vehicle every week to maintain proper battery voltage. Regularly clean the car battery. Over time, batteries can accumulate dust, white powder, and stains. To preserve battery life, periodically clean and wipe the battery with a damp cloth to keep its exterior as clean as possible.