Jeff. We STILL have no idea what on Earth it is you talking about.
What is "it"? What kind of Device? You said "m/c" in your last post (which you didn't bother linking to, so someone fresh would have even less clue) "m/c" - motorcycle? machine? Treadmill? Tenis Ball server? Fitness band?
What did you "put back in"? The batteries?
What do you mean by "wrong polarity"? Did you put batteries back in the wrong way round?
Assume we have **absolutely** no previous knowledge of what you are talking about (because we don't).
Be specific, clear, concise and brief.