How long does it take for a car battery to fully charge after starting the engine?

[Rebecca]

If the battery is in good condition, driving for about 20 minutes after starting the engine can fully charge the battery. Here is some relevant information about car batteries: Introduction: A car battery refers to a rechargeable battery that can be used again after discharging. Common types include lead-acid batteries, nickel-iron batteries, and nickel-cadmium batteries. In a lead-acid battery, the positive electrode is lead dioxide, the negative electrode is lead, and the electrolyte is a dilute sulfuric acid solution. During discharge (use), the positive and negative electrodes react with sulfuric acid to form lead sulfate. When the sulfuric acid concentration drops to a certain level, the battery must be recharged. Using an external power source for charging can restore the electrodes and electrolyte to their original state, allowing the battery to be reused after charging. Classification: Ordinary batteries, dry-charged batteries, maintenance-free batteries.