Dallas module battery replacement... - test-drb@ccmp.vtda.org

8 Mar 2001

...
 Most of the time, all that's wrong with these is
the lithium battery. The
...
 package is actually a standard DIP IC package with some
more epoxy on top
...
 containing the batteries and the crystal (if
appropriate).

I've not tried it myself, but I am told you can cut away the top part of
the device using (e.g.) a Dremel tool, remove the old batteries and put a
...
 couple of cheap lithium cells in. 

I've done it on dallas chips.  I walk them to the machine shop and sand
off the
plastic slowly till I hit metal (battery).  You can use a magnet to
locate the
battery.

Allison