[Dave Moll]

During the 28 years I've lived in my current house, I think I've only changed the two D cells in my door chimes twice at most - maybe only once. This includes the cells already in them when I moved in - although I did think they were flat at first, until I discovered that the clink-clunk rather than ding-dong resulted from the unit being installed upside down so that the chimes weren't correctly suspended!