How do you check a coin cell (button cell) battery to see if it still has charge left? Just measuring with a multimeter might deliver false results. We look at three methods and then determine actual voltage level for a pass/fail result. Equipment used: Fluke 77 multimeter Atten ADS1102 100MHz Digital Oscilloscope Resistance box Breadboard with various passive components CR2032 datasheet http://data.energizer.com/PDFs/cr2032.pdf Shot on a Canon 70D and edited in Sony Vegas Intro from Ratatat: http://www.ratatatmusic.com Extro from Blake Robinson: https://soundcloud.com/blaketothefuture