Li-Ion Battery Health Assessment (IMAGE) DOE/Argonne National Laboratory Caption Reference electrodes provide insights into a battery cell's health. The image above depicts two reference electrodes within a battery cell. This configuration that allows researchers to evaluate a battery's anode and cathode separately at all stages of cycling and aging. Credit Sana Sandler/Argonne National Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.