Hello & Welcome to Just Answer,
Sorry to hear of your lost charger.
In order to help with this issue, may I ask:
1) the MODEL of your GPS?
2) The AGE of your device?
3) What "charger" are you looking to replace (AC charger - used in the home OR the car charger - used to power the device when in use)?
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)