David Farber wrote:

I've poked and prodded but can't seem to get this thing apart without
chipping the plastic. If anyone has been down this road before I'd like to
know how to change the batteries.

This one is obviously not the same as mine, but within the charging 'cradle'
(which was keyed) you could twist the body so the bottom would come loose.
If yours is not keyed, you need to find a way to hold onto the bottom
section while separately holding onto the body and twisting about 90 degrees.

Once loose, the bottom would pull out and reveal the guts.

The battery was encased in a plastic "cage", and not a "user serviceable"
part, but if you're careful about it, it can be done.

Although the battery (NiCd in my day) was not a "normal" size, we did have
an electronics outlet here in Australia that sold similar batteries. So if
you look, you should be able to find them around your neck of the woods.
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