Why Do Batteries Leak?

[MacViolet]

Battery leakage can be caused by quality defects, external impacts, or prolonged usage. Below are detailed explanations: Quality Defects: During production, issues such as inadequate sealing or cracks in the casing may occur. Batteries with such inferior production processes pose significant leakage risks. External Impacts: The casing material of conventional lead-acid batteries is mostly made of ABS, which has good hardness but poor toughness. When subjected to external impacts, it is prone to cracking, leading to leakage. Prolonged Usage: With extended use, some sealing components in the battery may reach the end of their service life, making leakage more likely.

[DelElliott]

I think one major cause of battery leakage is overcharging. During daily driving, if the charging system malfunctions or the charger voltage is too high, chemical reactions occur in the battery's electrolyte, releasing hydrogen and other gases. These gases accumulate, causing a sharp increase in internal pressure, which eventually leads to leakage through the pressure relief valve or seals. High temperatures, such as during hot summer days, make this issue more likely to occur. As someone who regularly studies automotive technology, I recommend checking the charging voltage during each maintenance session to ensure it's within normal range and avoiding prolonged high voltage, which can reduce the risk of leakage. The leaked battery fluid is highly corrosive and can damage the vehicle's metal components, so early detection saves money and ensures safety.

[Robyn]

With considerable experience in car repairs, I've observed that battery leaks are mostly due to physical damage or aging. For instance, when a car hits a bumpy road and the battery case is impacted, or if the battery isn't securely fixed and shakes, the casing can crack, causing the liquid to leak out. Older batteries, after five or six years of use, have seals that begin to deteriorate and crack, allowing the liquid to slowly seep out. I remember last time after an accident with my car, the battery case had a crack, and the leak only stopped after it was patched up. During routine maintenance, it's important to frequently check the battery's exterior and its mounting. If cracks or looseness are found, replace or repair it promptly. Seasoned drivers all know that neglecting such minor issues can lead to major troubles, like corroding wiring or even causing a fire.

[AniyahRose]

As an average car owner, I've noticed that high summer temperatures often cause battery leakage. The engine compartment temperature soars, causing rapid evaporation and expansion of fluids inside, until the cap can't hold it anymore and spills occur. Once, my car's battery edges were damp after parking in direct sunlight. Neglecting regular maintenance is also a factor, like failing to clean dust-clogged battery vents, which increases fluid pressure. Simply put, paying more attention to parking locations and seasonal changes, avoiding constant direct sunlight exposure, can effectively prevent leakage issues—saving both money and hassle.