Have you tried these steps from Garmin?
Spoiler: Charging a nuviCam or dezlCam Device
From Garmin:
Use the vehicle power cable that came with your device.
A full charge may take up to 6 hours
All devices come with a vehicle power cable to charge the device
This is the recommended method for charging your device.
Also read the info on nuviCam or dezlCam Frozen or Not Powering On <------------Important info...
If that does not work contact Garmin support the Garmin is not that old.
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