What does the ACC power supply in a car mean?
3 Answers
ACC power supply in a car refers to the vehicle's power source, which is controlled by the car key and provides electricity to the vehicle. When the ignition switch is in the ACC position, the vehicle is powered on, allowing the use of the multimedia system and related air conditioning or heating functions. The system will turn off once the vehicle is started. Relevant information about car starting power supplies is as follows: 1. Introduction: A portable starting power supply that integrates power supply and charging functions, which can be used to emergency start a car when it stalls and cannot be started, and can also charge digital devices like mobile phones and tablets anytime, anywhere. 2. Function: Emergency car starting: It can be used to start a car when the battery is low on power and the car cannot be started.
Actually, the ACC power is a type of power-on state in a car. Simply put, when you turn the car key to the first position, it enters ACC mode. At this point, you'll notice that some electrical devices in the car can start working, such as the central control screen lighting up, the charger plugged into the cigarette lighter being able to charge your phone, and the radio playing music normally. The best part about this state is that the engine doesn't start, making it particularly suitable for listening to music or charging devices while waiting in a parking lot or taking a short break, without wasting gasoline or producing exhaust pollution. However, the ACC state relies solely on the battery for power, so it shouldn't be used for too long. Once, I was waiting for my wife to shop in an underground garage at a mall, listening to the radio for a full forty minutes, and when I started the car, the battery alarm went off, nearly leaving me stranded. Now, I generally limit it to twenty minutes, which is fine. Also, note that different car models have different keyhole position designs; for example, some Japanese cars have ACC at the first turn of the key, while some German cars have it at the second turn.
I often deal with car modification projects, and ACC power is the most popular power source in the car enthusiast community. Simply put, it's the state where the car key is turned to power some devices without starting the engine. The most obvious indicators are the dashboard lights turning on, the cigarette lighter outputting 12V, and the multimedia system powering up normally. Its biggest advantage is the convenience of power usage without idling the engine and wasting fuel. For example, when you need to temporarily use a car air pump to inflate tires outdoors, switching to ACC mode allows the pump to operate. Having worked in repair shops for many years, I often encounter car owners neglecting battery power issues. I generally recommend not exceeding 30 minutes in ACC mode, especially in winter when battery performance declines. Additionally, some newer cars have eliminated the keyhole—pressing the start button once enters ACC mode, and pressing it again powers the ON position. When installing dash cams or ambient lights, tapping power directly from the ACC fuse is the most straightforward, as the devices sync with the key switch for added convenience.
