Quote:
Originally Posted by knc1
- - - - -
A capacitor diameter of 60mm is going to make a noticeable lump in the zipper case. 
|
So the obvious solution would be a 3,600 farad, 4.2 volt, supercapacitor the general dimensions of a Kindle and as thin as possible.
You will not find that in any distributor's catalog, but:
If you click on the 'view on YouTube' button, you will find that our "Kindle Friend", Jane Tizzy, has placed her notes on making such a device in the comments section.