Perry Godwin

I have a Sennheiser VMX100 Bluetooth headset that went through a wash cycle in the laundry. I suspect the battery was...

The battery is supposed to be a lithium-polymer battery. It is flat, in a metal case, a rectangle ~1/2" x ~3/4" in size. On one side it is marked: + ATL 681622 - 3.7V On the other side, there is an Underwriters sticker and these numbers: 940 7275 02795 There is also what looks like a 2D bar code.