The amplifier is taking up so much power that there isn’t enough left to power the lights properly. It is because the amplifier uses a lot of power, and the battery has to work harder to provide it.Īnother symptom of a subwoofer draining battery is dimming or flickering lights. If you notice that your car’s electrical system is working harder than usual, it could be a sign that your amplifier is draining your batteries. The car’s electrical system is working overtime. Some symptoms are showing that the amplifier drains the car batteries: Sometimes, an amplifier can drain car batteries if left on for an extended period. It depends on several factors, including the size of the amplifier and how long it is used. There is no definitive answer to this question. How Do I Find Out What’s Draining My Car Battery?
