hi crystaldehar
no, it doesnt have to be on, but does take a few hours to charge...magellan recommends using the car charger or the ac adapter to initially charge it for atleast two hours...if you use the car charger, there should be a light on the charger to tell you its working and charging your unit (provided theres nothing wrong with it)
you should also have gotten a usb cable with your unit, it will (should) also charged while hooked to your PC via the usb cable.
let me know if you need further help...
HERE is your manualbill
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