To those having the same issue, there is now a similar sized battery on amazon, be it 3.7v, 250mAh only, but it works.

It's a heat transfer pad similar to the heat transfers sitting between a computer's processor and fan...

Thanks to this write up, I am now able to try and repair my Ring Pro which quit working. I have found the "charging" technique on youtube which worked for a few months, but now the internal battery won't hold charge.

[url=https://flic.kr/p/2oGARFW][img]https://live.staticflickr.com/65535/5296...[/img][/url][url=https://flic.kr/p/2oGARFW]battery 01[/url] by [url=https://www.flickr.com/photos/strobemonk...](the original) strobemonkey[/url], on Flickr

[url=https://flic.kr/p/2oGyWLA][img]https://live.staticflickr.com/65535/5296...[/img][/url][url=https://flic.kr/p/2oGyWLA]battery 02[/url] by [url=https://www.flickr.com/photos/strobemonk...](the original) strobemonkey[/url], on Flickr

[url=https://flic.kr/p/2oGBh6R][img]https://live.staticflickr.com/65535/5296...[/img][/url][url=https://flic.kr/p/2oGBh6R]battery 03[/url] by [url=https://www.flickr.com/photos/strobemonk...](the original) strobemonkey[/url], on Flickr