What is the normal charging current for a car battery?

[MatthewRose]

When charging a car battery, the normal current is one-tenth of the battery's capacity, and the voltage should be between 14V and 15V. Below is relevant content introduction: 1. Battery voltage: Typically, household car batteries are 12V, but in reality, it might be higher. Generally, the no-load voltage is around 13V, and the load voltage should not be lower than 11V. If it falls below this voltage, it may cause difficulty in starting the car. 2. Avoid prolonged parking: The battery can be charged by the alternator while the car is running. If the car is parked for an extended period, it can easily lead to battery discharge, making it difficult to start the car. Therefore, during long-term parking, it is advisable to start the vehicle at least once a week for more than 5 minutes to charge the battery.