Yes. When a car stereo, radio, receiver, or head unit drains, your battery is due to a process called “parasitic draw.” This term refers to electrical equipment consuming electricity from your vehicle when it shouldn't be (e.g., when the car is turned off or the equipment is not being used).
How long can you listen to a car stereo without draining the battery?
Newer cars should be able to play radio easily for at least 10-15 hours without draining your battery. If your car battery dies within a few hours of listening to music, you may need to see a mechanic. Quicker power draining could be a sign you need to replace the battery completely.
Can my stereo system draining car battery?
Can a car stereo drain your battery when running? No. There's no way for this to happen as most stereos start using energy from the alternator when the car is on. Your stereo can't drain your battery in that case.
Can speakers drain your battery?
Aftermarket speakers may drain the battery if the wiring done is wrong. But if all the wiring is done perfectly and a experienced person does the fittings then there is no chance that it will drain the battery when it is off.