Can a Car Battery Be Repaired?

1 Answers
AndrewRose
07/30/25 9:18am
Batteries can be repaired. Below is relevant information about car batteries: 1. Introduction: A car battery, also known as a storage battery, is a type of battery. What people commonly refer to as a battery is a lead-acid battery, which is primarily made of lead and its oxides, with sulfuric acid solution as the electrolyte. 2. Working Principle: The battery uses lead plates filled with spongy lead as the negative electrode and lead plates filled with lead dioxide as the positive electrode, with 22-28% dilute sulfuric acid as the electrolyte. During charging, electrical energy is converted into chemical energy, and during discharging, chemical energy is converted back into electrical energy. When discharging, metallic lead serves as the negative electrode, undergoing oxidation to become lead sulfate, while lead dioxide serves as the positive electrode, undergoing reduction to also become lead sulfate. When charging with direct current, lead and lead dioxide are generated at the respective electrodes. After disconnecting the power source, the battery returns to its pre-discharge state, forming a chemical cell. Lead-acid batteries are rechargeable and can be discharged repeatedly, known as secondary batteries. The voltage of a lead-acid battery is 2V, and typically three are connected in series to achieve 6V. Cars use six lead-acid batteries connected in series to form a 12V battery pack. Regular lead-acid batteries require periodic replenishment of sulfuric acid to maintain the electrolyte at 22-28% dilute sulfuric acid.
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