How long does it generally take to charge a car with a dead battery?

[VonJulia]

After a short period of parking that results in a dead battery, the car typically needs to be charged for one to two hours to restore normal functionality. If the car has been parked for an extended period, it may require an overnight charge to return to normal operation, or the battery might need to be replaced. Below is some relevant information about car batteries: 1. A car battery, also known as a storage battery, converts chemical energy into electrical energy. Most cars use lead-acid batteries, which are made from lead and lead oxide, with sulfuric acid solution as the electrolyte. The advantages of lead-acid batteries include stable voltage and low cost, but they require frequent maintenance and have a relatively short lifespan. 2. Based on lead-acid battery technology, maintenance-free batteries have been developed. These batteries have structural advantages and consume very little electrolyte, eliminating the need to add distilled water during use. Their lifespan is about twice that of standard lead-acid batteries, and they offer benefits such as high-temperature resistance and compact size.