Hello, My name is ***** ***** I'll be assisting you. I'm sorry you're having problems.
Sorry about that computer-generated helper there, I have no control over that.
Now, if I got this correct - you bought this GPS 18 years ago? Also does the unit power up at all in any way?
There is a replacement battery available for this unit for around $10, and the corrosion can be cleaned up with a mild mix of baking soda and water (this eats and neutralizes the acid making it non-corrosive), and then the contacts (if they are also corroded) can be cleaned with a little rubbing alcohol. If you are looking to do this work yourself, you can purchase the battery at the link below:
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