Hello, My name is ***** ***** I'll be assisting you. I'm sorry you're having problems.
The site at the link below repairs Tom Tom as well as other brand and model GPS units, and you can click the link to inquire about having the battery replaced through them:
If you need further assistance let me know. Before you go, PLEASE DO click at least a 3 STAR RATING, at the top of your screen. That is how I am credited for my efforts by the site. You can follow up any time as needed at no additional cost.