http://www.garmin-250.com/blog/2009/11/will-the-garmin-etrex-vista-c-charge-off-of-usb/ Question and Answers about Garmin GPS Tue, 13 Jul 2010 00:43:47 -0500 http://wordpress.org/?v=2.8.4 hourly 1 http://www.garmin-250.com/blog/2009/11/will-the-garmin-etrex-vista-c-charge-off-of-usb/comment-page-1/#comment-705 rdrnnr19 Thu, 19 Nov 2009 13:03:34 +0000 http://www.garmin-250.com/blog/2009/11/will-the-garmin-etrex-vista-c-charge-off-of-usb/#comment-705 The mini-USB port is for map downloading. According to the specs for the eTrex, the USB cables don't provide wiring for external power. The GPS runs on 12V, USB is only 5V. The GPS runs off of standard AA batteries, so I believe that there is no way to charge the batteries, while in the device, even using a charger. All the power cables are listed as power adapters, not chargers, so I think you will have to change the batteries when they go dead, or use seperately rechargable batteries. The mini-USB port is for map downloading. According to the specs for the eTrex, the USB cables don’t provide wiring for external power. The GPS runs on 12V, USB is only 5V. The GPS runs off of standard AA batteries, so I believe that there is no way to charge the batteries, while in the device, even using a charger. All the power cables are listed as power adapters, not chargers, so I think you will have to change the batteries when they go dead, or use seperately rechargable batteries.

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