ECU (Electronic Control Unit), also known as "trip computer" and "vehicle computer". In terms of use, it is a special microcomputer controller for automobiles. Like ordinary computers, it consists of microprocessor (CPU), memory (ROM, RAM), input/output interface (I/O), analog-to-digital converter (A/D), shaping, driving and other large-scale integrated circuits. Simply put, ECU is the brain of a car.

Battery, also called storage battery, is a kind of battery. Its working principle is to convert chemical energy into electrical energy. Usually people refer to lead-acid batteries. That is, the battery is mainly made of lead and its oxide, and the electrolyte is sulfuric acid solution.

Let's see which cars can't be broken when changing batteries:

Because the computer has memory, the car with ECU is reset after power failure. In addition, some anti-theft devices have to be re-equipped. Some cars' stereos will be locked and the power cannot be turned off. With the anti-theft device, you can turn it off if you know the password. If you need to remove the battery for charging during maintenance, but don't know the password, you can find a battery and remove it in parallel.