> The original post implied that the units were drawing a constant > 3uA. It's emerged now that there's a mix of quiescent and demand > currents, which I know from personal experience will result in a > completely different battery longevity. The larger the filter capacitor, the closer the real drain will approximate the average. RM -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.