Paul Gaastra wrote... >My circuit draws 290uA on average... The battery you cited has a capacity of 1440 milliamp-hours; at a steady drain of 290uA, that works out to just under 5000 hours, or about 7 months. That's a long way from 5 years... Dave -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu