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Using my laptop for powering my GPS

Nuvi 2797
Can I use my laptop for a power source to run my Garmin ? I have tried with the Garmin cable and other cables but I always a message to use a Garmin cable ( which I have )...



  • Boyd 2028 Points
    You would need a power-only cable. Typical computer USB cables have extra wires that tell the GPS it's connected to a computer. Even then, I gather that newer Garmin devices are more particular about what you connect them to, as witnessed by the message you saw (an old model probably would not complain about this).

    Also, a computer USB port does not provide as much amperage as a power supply so it might not be able to charge the GPS battery fast enough to meet Garmin's operating requirements.
  • rphillipchuk 191 Points
    Is there a specific cable I need to plug in and use in the house ? Wall Wart ?
  • Boyd 2028 Points
    edited June 2017
    This is the power adapter that Garmin recommends for the 2797:

    I have a Garmin adapter that was included with one of my GPS'es (number PSAC05R-050) that works with everything I have tried. Not sure if they make it anymore.

    Cheap third party adapters will often work, but it can be hit or miss. If you try one of these, purchase it from a local store that allows easy returns/exchanges just in case.
  • rphillipchuk 191 Points
    Thanks Boyd
    Appreciate the help
  • I seem to have developed a problem with USB cables. My nuvi 57 is a few years old and have been using it with both my desktop & laptop connected using a standard USB cable. However now when I plug in the nuvi to my laptop I get message that the USB cable isn't compatible. I tested 5 different cables before I found one that would work. Did Garmin push an update to somehow sense a Garmin ($$) USB cable?
  • Boyd 2028 Points
    Are you trying to use the computer to just power the GPS so that you can continue using it (which is the topic of this thread). Or are you trying to transfer data from the computer to the GPS (such as a map update)?

    Does that error message appear on the computer screen and come from computer's operating system or from Garmin's computer software (such as Express)? Or does it appear on screen of the GPS itself?

    We've had several threads about changes to the GPS firmware that will display a message that a charger is not compatible - that message appears on the GPS screen. But don't recall anyone mentioning your problem of just a cable.

    If the problem is related to a recent change in Garmin's device firmware, there is a pretty simple way to roll it back to an earlier version.
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