On Sun, 18 Jul 2010 12:31:47 -0400, "Ed Pawlowski" wrote:

snip

Extra, XR or Maxi etc. battery packs. These are large capacity NiCd packs,
they are usually 1500 to 1700. We only replace these with 2.1 to 2.4 AH
cells for a 40% increase in run time.

The Dewalt DC9096 18V "XRP" pack is 2.6Ah. A pack of two is around $120.

NIMH -Maximum capacity packs: NiMh batteries are usually available in two
battery sizes. Small packs were 1.5 AH and large battery packs were 2.2 AH
to 2.6 AH We rebuild the small case with 2.1 AH and the larger packs are
improved to 3.3 AH. Either rebuild usually adds 50% more run time.