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Charging A Device In A Vehicle

Discussion in 'Bad Dog Cafe' started by jumpnblues, Apr 10, 2021.

  1. jumpnblues

    jumpnblues Friend of Leo's

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    I have wireless headphones that I use while at the gym. I leave them plugged into a USB port in the vehicle for charging when not in use. Will that run the vehicle battery down?
     
  2. schmee

    schmee Doctor of Teleocity

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    Many car usb ports go off with the key, do yours?
     
  3. AAT65

    AAT65 Poster Extraordinaire

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    1) it’ll take a heck of a long time to flatten a car battery (50Ah or so at 12V) with a USB device (usually 100mA at 5V, sometimes 500mA)!
    2) as our friend @schmee already pointed out, the USB ports are probably powered down when the ignition is off.
     
  4. jumpnblues

    jumpnblues Friend of Leo's

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    Hmm?? I don't know. I'll check.
     
  5. Killing Floor

    Killing Floor Tele-Afflicted

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    If the USB power stays on when your ignition is off it should be able to charge your device for 5-6 months.
     
  6. Lowerleftcoast

    Lowerleftcoast Friend of Leo's

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    Each of the last three cars that caught fire on the lot were charging a device unattended... Good luck.
     
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  7. drmordo

    drmordo Tele-Afflicted

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    Yep, we had a car on base catch on fire when charging a device on a hot summer day.
     
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  8. dented

    dented Doctor of Teleocity

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    Depends. If you use the factory USB port in my dashboard radio they will stay charging when the vehicle ignition is turned off. But I use an USB port plugged into the "lighter" socket and that goes off when the ignition is turned off. I have back seat console USB ports I would imagine those stay on also. But I have never used them.
     
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