there could be a few reasons why this is happening....
there should be a light on the car charger that comes on when you plug it in, if it isnt on when not plugged in to the gps, but while plugged in to the lighter...either the lighter fuse is blown, or the charger is defective.
if the light is on, on the charger and it still wont stay powered on, it probably has a bad usb port (very common on this model) but it could also mean the charger (if not factory) is not compaible with the unit.
another way you can try and charge it (if you determine the chargers at fault) is to hook it up to your computer via the usb cord that should of been supplied with your unit.
HERE is your manual..it will show you the differant charging options..there is also updates on that page if you need them
let me know if you need more help.
bill
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