Is It Dangerous to Charge a Car Battery for 20 Hours?

[HaydenDella]

Dangerous. Prolonged charging constitutes overcharging, which is detrimental to battery lifespan. For gasoline-powered vehicles, charging the battery typically requires around four hours. Here is relevant information about car batteries: Concept: A car battery, also known as a storage battery, is a type of battery that operates by converting chemical energy into electrical energy. Generally, what people refer to as a car battery is a lead-acid battery. This is a type of battery primarily made from lead and its oxides, with a sulfuric acid solution serving as the electrolyte. Working Principle: The battery uses lead plates filled with sponge-like lead as the negative electrode, lead plates filled with lead dioxide as the positive electrode, and a 22~28% dilute sulfuric acid solution as the electrolyte. During charging, electrical energy is converted into chemical energy, while during discharging, chemical energy is converted back into electrical energy. When the battery discharges, metallic lead serves as the negative electrode, undergoing oxidation to become lead sulfate; lead dioxide serves as the positive electrode, undergoing reduction to become lead sulfate.