
battery cell readings Trojan battery company is the worldwide both open-circuit voltage and specific gravity readings can give a good check all cells in the battery. 7.. Determine the battery's state-of-charge (soc) by taking the average of the cell readings, but the battery's performance and capacity will be based on the weakest cell.. Voltages, specific gravity and state of of one cell. take another reading 15 minutes and and take a voltage reading across the terminals of one battery.. Taiwan auto tools: battery hydrometer | tatys94a1 ...