The specific gravity of battery electrolyte changes by how much for every 10 degrees in temperature change?

The specific gravity of battery electrolyte typically changes by 0.004 for every 10 degrees Celsius change in temperature. This relationship is crucial for accurately assessing the state of charge within lead-acid batteries, as the specific gravity readings can fluctuate with temperature variations. Consequently, understanding this change allows for improved calibration and interpretation of the specific gravity measurements taken, ensuring more accurate assessments of battery health and charge. This information is particularly important for maintenance and operational efficiency in applications where battery performance is critical.