Does playing music after turning off the car consume battery power?
2 Answers
Playing music after turning off the car does consume battery power, and there is a possibility of draining the battery completely. Therefore, car owners should avoid sitting in the car for extended periods listening to music after turning off the engine. When the car is turned off, the battery supplies power to all the electronic devices in the vehicle. Once the engine is started, the alternator begins to operate, taking over the power supply for the electronic devices and simultaneously charging the battery. Over time, the internal resistance of the battery increases, and its capacity gradually decreases. Even when the capacity is reduced by half, the car can still be started normally, but the number of successful starts will decrease. If the engine fails to start, attempting to start it twice in succession may completely drain the battery.
Listening to music after turning off the engine really drains the battery! Last time I went camping, I played the car stereo for less than two hours and couldn't start the car afterward, ending up calling for roadside assistance. A car battery without the engine charging is like using a power bank without plugging it in—the speakers, infotainment system, and amplifier all guzzle power like crazy. A standard 60AH battery can only handle a 350W audio system for about three hours, and if you've upgraded to a subwoofer, it drains even faster. So, listening for 15 minutes while waiting is fine, but don't make the same mistake I did by losing track of time singing karaoke in the car. Now, I always set a phone alarm whenever I turn on the stereo with the engine off.
