12V Batteries in Electric Vehicles – Things You May Not Know

Why do electric vehicles, despite having high-capacity and high-voltage batteries, still need 12V batteries just like gasoline-powered cars? This is a question many people may be wondering about. Let's explore the reasons and important points related to 12V batteries in electric vehicles.

Why do electric cars need a 12V battery?
In electric cars, the 12V battery powers many electrical devices, such as lights, horns, entertainment systems, windshield wipers, power seats, decorative lights, alarm systems, security systems, etc. Meanwhile, the high-voltage battery with a voltage of 400-800V powers the electric motor to operate the vehicle and the air conditioning compressor.
There are several reasons for using a 12V battery in electric vehicles:

• To ensure the safety of electrical equipment, similar to gasoline vehicles.
• In the event of an accident, the control system will cut off the high voltage, but the 12V battery will still supply power to the emergency assistance system such as the horn or warning lights.

Reasons why 12V batteries fail quickly
Like traditional gasoline-powered vehicles, 12V batteries in electric vehicles can fail quickly in situations such as:

• Leaving the vehicle parked for long periods without driving
• Software errors
• Continuously driving short distances and starting/stopping the engine too many times a day.

To protect the battery and extend its lifespan, users need to pay attention to their vehicle usage habits.

Learn more about how to maintain a 12V battery and ensure optimal performance for electric vehicles.
GS Battery Vietnam, one of the leading battery manufacturers in Vietnam, continuously develops and improves its technology to produce high-quality batteries that best meet consumer needs. GS batteries are specially designed to ensure safety and optimal performance for vehicles, including electric vehicles. Each battery undergoes a rigorous quality control process, guaranteeing reliability and durability for users.