Hello & Welcome to Just Answer,
Sorry to hear of any issue you are having with your device.
To help you with this issue, may I ask:
1) The AGE of the device?
2) WHEN where the 2 trips you mention taken?
3) HOW LONG have you left the device connected to the charger before attempting to use it?
4) Are you using the ORIGINAL vehicle power adapter when trying to use it now?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.
Thanks, ***** *****--. .-(im)