Will and FM transmitter left plugged into my car drain my car battery?

Update:

I have a bluetooth/fm transmitter that I'm using and it has an on/off switch, but I noticed that the blue lights near the port (on the device, it has 2 usb plugins to charge stuff) stay on even when its off which means it still draws current. I would like to leave it plugged in all the time but I don't wanna drain my battery. Any help?

4 Answers

Relevance
  • 3 years ago

    Not enough to matter

  • 3 years ago

    Yes

  • JetDoc
    Lv 7
    3 years ago

    Yes, it will, but it may take several days. If you drive the car on a daily basis, and it has a healthy electrical system, it shouldn't be a concern.

  • Scott
    Lv 7
    3 years ago

    Yes, itcould.

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