Measuring batteries using the right setup: Dual-cell CR2032 and 18650 battery holder

In this application note, Gamry Instruments highlights the critical role of precise specifications in testing batteries and energy-storage devices. Various factors impact battery performance, and researchers must ensure accurate experimental setups to obtain reliable results. The note showcases the influence of setup through electrochemical impedance spectroscopy (EIS) experiments, comparing common 2-terminal setups with Gamry's 4-terminal battery holders. These holders, used for CR2032 coin cells and cylindrical 18650 batteries, enable direct-contact Kelvin sensing, ensuring accurate measurements.