Question

Why do lead acid batteries fail?

Answer 1

Answer:

these older lead acid battery models, water is responsible for carrying the electrolyte as it circulates. During the charging process when, for example, your car is running, water is slowly lost as it evaporates due to heat. In hotter climates, this effect is more pronounced.

Answer 2

Explanation:

High temperatures, high charging rates, and over charging can cause a loss of electrolyte in non sealed batteries. In sealed batteries, the same factors will cause an increase in temperature and pressure which can eventually result in the release of gas (and possibly electrolyte) from valves.