If your "Kindle D01100" looks like this, it is a K4:
http://www.ebay.com/itm/like/282143080550
A K4 battery is not the same size as a K3 (i.e. "Kindle Keyboard"), and it has different electrical connections. It will not replace a K3 battery without suitable modification (e.g. see my "
Kindle Battery Surgery" thread) -- much easier to just buy a K3 battery if that is what you need.