Replacing the battery in a Livescribe "Sky" WiFi pen.
This pen records handwriting on special micro-dot paper, and can upload the notes to Livescribe or other sites like Evernote.
But in this one the rechargable battery had died, so time for a teardown and repair.
The battery I got on ebay is no longer available, but you might find one with enough searching.
Look at the battery specs at the end of this repair description: http://amasci.com/elect/livescribe.html
If the specs of 10 x x28 mm are correct, then the key to search on is 10280, which should return batteries of the right size.
I found this battery on Alibaba, it looks right, but doesn't have solder-tabs on it.
https://www.alibaba.com/product-detail/2015-new-products-10280-280mah-li_60344424384.html?spm=a2700.7724838.2017115.9.0BDjVT&s=pspm=a2700.7724857.main07.128.2210b312pfDciZ
