What is the maximum voltage of a car battery?

[OMichael]

The maximum voltage of a single battery is 18V. Below is some relevant information about car batteries: 1. Car battery: A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. 2. Car battery maintenance: (1) Avoid frequent vehicle starts. In winter, when the car is difficult to start, do not attempt continuous starts. Continuous starting of the motor will definitely cause excessive discharge and damage to the battery. The interval between restarts should be more than 5 seconds. (2) When the battery has been in use for about two and a half years, routine maintenance should include battery testing to prevent potential issues. Try not to use electrical equipment such as the CD player or cigarette lighter when the vehicle is not running, and minimize the use of various onboard electrical devices while driving.