What does Ah mean for a car battery?

[LaKimberly]

Ah in a car battery represents its capacity, where 'A' stands for current (Ampere) and 'h' stands for hours. A car battery is a type of battery, also known as a storage battery, which works by converting chemical energy into electrical energy. Typically, when car owners refer to a battery, they mean a lead-acid battery, which mainly uses lead and its oxides as electrodes and a sulfuric acid solution as the electrolyte. It is crucial to avoid storing the battery in a discharged state. When the battery is discharged, sulfation can easily occur, where lead sulfate crystals form on the electrode plates, blocking the ion channels and leading to insufficient charging and reduced battery capacity. The longer the battery remains discharged and unused, the more severe the damage. To extend the battery's lifespan, it should be charged once a month when not in use.