How to replace the built-in battery of the livescribe pulse pen

I was not aware of the OLED issue. Mine is also dead. I spoke with them last night 5/28/15 and here is what they sent me.

This company does not stand by its product. I went through their resolution process regarding my smartpen not working. In the end it was a battery issue (pen not staying charged) and the company would only issue a $45 credit towards the purchase of another pen. Since we must register the pen upon purchase to receive their warranty, you would think a responsible company would have notified me, they found a problem with their pens and the pen must stay charged at all times. I didn't receive any such notification from the company. I guess their main goal is to sell more pens, will my mission is to inform everyone DO NOT buy anything from this company.

Found the company that makes the OlED screen and possibly the battery too.

A few more bread crumbs in the search for the elusive "Rechargeable Lithium Ion Model No.:GP1229L30"