Internal resistance (IR) is a key indicator of lithium-ion battery performance, power capability, and state of health, yet different measurement methods often produce conflicting results. This creates challenges for battery characterization, modelling, and performance validation. This application note examines why techniques such as DC pulse testing, HPPC, AC resistance measurements, Electrochemical Impedance Spectroscopy (EIS), and pulse-multisine methods can yield different resistance values, even when testing the same cell under identical conditions.
Download the application note to discover if DC methods are reliable for battery internal resistance measurements and how it helps improve test accuracy, simplify workflows, and support more reliable battery evaluation and modelling.
Download the application note