How to Charge a Dead Car Battery?
1 Answers
To charge a dead car battery, use the constant voltage and current limiting method. Charge at a constant voltage of 14.8V with a current limit of 15A for 16 hours, then switch to a constant current of 3A for 4 hours, totaling 20 hours. Signs that the car battery is fully charged include: 1. A large number of bubbles and boiling phenomenon inside the battery; 2. The terminal voltage rises to the maximum and does not increase further within two hours; 3. The electrolyte level rises to the highest point and does not increase further within two hours. A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. The normal service life of a car battery ranges from 1 to 8 years, depending largely on the condition of the vehicle.