On Mon, 28 Sep 2009 08:52:38 -0700, "Bill"
wrote:

How about getting rid of all those batteries in various devices in the home
and connecting the battery connections to one central battery?



Remember that 9 volts will loose voltage in a short run. By
the time you get it trough a wire from one end of the house to
another, you might be down to 7 volts and that might not work too
well.