Updated at: 12-11-2021 - By: Lucas

Our cars’ radios are one of the most often used electrical gadgets on the road. It’s a great way to keep things interesting on long road journeys, and it gives good amusement. Even if you don’t have your car running, you may ask if it can deliver the same benefits for a lengthy period of time. Hence, you may wonder:

How long would it take for the car battery to fail if the radio is turned on? In most cases, the automobile battery will die within a few hours. In spite of this, it isn’t a smart idea to leave your radio on while your engine is off. Starting the engine will be more difficult as well as draining your battery.

Radio playback on a car’s battery can last for hours on end. However, the battery, the radio, and the number of hours you use it all play a role. Everything you need to know about your car’s battery will be covered in this article. You’ll be able to learn more about it and keep it in good working order this way.

With that, let’s get started!

Does Leaving the Radio on Drain the Car Battery?

Leaving the radio on in the car might drain the battery in general. However, there are a number of variables that have a role.

Radios, for example, consume very little power and hence cannot be blamed for emptying the battery. It’s a different story, however, if you leave it on for hours while the engine is off.

Even yet, turning on the radio activates your vehicle’s electrical system as a whole. It would deplete the battery more quickly if you have lights that come on anytime the key is in the ignition.

Batteries for automobiles are shown below. This battery has a capacity of 60 AH. 60 Amps for an hour, or 6 Amps for 10 hours, is what they are capable of.

The conventional stereo, on the other hand, requires approximately 5 AMPS (amperes). Five amps isn’t going to cut it if you want to crank up the volume.

As a result, you should expect to have a few hours of battery life left. You’ll need about 130 Amps to start your engine, however. To put it another way, you may not be able to start your car in only minutes should you leave the radio running.

How Long Does Car Battery Last With Radio On?

How Long Before Car Battery Dies With Radio On

It should take a few hours for your car radio to drain your battery, given that it is the only source of electricity being used.

Leaving the radio on while the car is parked might deplete the battery. Generally speaking, this practice is not recommended. Radios and stereos, on the other hand, consume very little power. As a result, other factors are more likely to blame for battery drain. Lights and fans make up some of the other options.

Another consideration is how much power your stereo consumes in the form of battery life. Your car’s audio system will play a role in this.

For example, if you have a lot of powerful speakers or a subwoofer that uses a lot of power, the power can be used up considerably more quickly.
Another factor that can raise battery usage is the presence of a large display on some radios. A lot of fiddling with the switches can cause the battery to run out more quickly.

With the radio on, how long will it take for the car battery to die?

Leaving the radio on for long periods of time is fine if the cell phone is in good condition. The lights and heaters should also be turned off, as this will cause the battery to deplete more quickly.

How to Listen to Radio Without Draining Car Battery?

In order to avoid exhausting your automobile battery, you should utilize a portable radio.

Pocket radios are a great option if you’re concerned about exhausting your vehicle’s battery.

In most cars, the movies soundtrack may be heard through the FM radio. It’s a good idea, but you don’t want to use up all of your car’s battery.

For this reason, it’s best to bring a portable stereo or speaker in your pocket.
This allows you to listen to the movie no matter where you happen to be. Your automobile battery will also benefit from this.

How Long Can You Listen to the Radio With the Car Off?

There are a number of variables that can affect how long radios can be used. Two to three hours listening to the radio on a brand-new car battery is typical, and you can still start your vehicle afterward.
When using your radio for a lengthy period of time, it is best to start the engine at regular intervals.

As a result, you’ll be able to recharge your battery and keep it from being drained. Still, a portable radio would be the best option.
To save time and extend the life of your automobile battery, you should use this method.


Everyone in a car has to be entertained and amused by the use of a radio at all times. As a result, we wish to keep it running even if the engine has been shut off.
It’s also worth noting that listening to music via radio doesn’t drain the battery all that much. If you don’t mess around with it and pump the volume, it’s pretty accurate. Even so, it still drains your battery in a short period of time.

It’s advisable to keep your car’s battery life in check by bringing a portable radio with you. As a result, you’ll be able to use it for longer periods of time without having to worry about battery drain.