The most popular lead acid battery voltages, 6V, 12V, 24V, and 48V, are shown in the four lead battery voltage tables below. To reiterate, it is always preferable to use the chart that was included in your lead battery’s original packaging, but if you’re seeking a general overview, you can glance at the chart we’ve provided below.
Here we see that a 6V lead acid battery has an actual voltage of 6V at a charge between 40% and 50% (43%, to be exact). The voltage spans from 6.37V at 100% charge to 5.71V at 0% charge. It is also important to note that lead batteries have a depth of discharge (DoD) close to about 50%.
A lower voltage reading on the Lead Acid Battery Voltage Chart generally suggests a lower state of charge in the battery. It indicates that the battery has less available energy and may require charging to maintain its optimal performance. Can the Lead Acid Battery Voltage Chart be used for all lead acid batteries?
The good news is that lead acid battery state of charge (SOC) charts are available if you need to determine the precise battery voltage (6V, 12V, 24V, 48V, etc.). By comparing the voltage of a lead acid battery to the appropriate percentage charge shown on this chart, you may determine how much more juice is still in the battery.
A lead acid battery is considered fully charged when its voltage level reaches 12.7V for a 12V battery. However, this voltage level may vary depending on the battery’s manufacturer, type, and temperature. What are the voltage indicators for different charge levels in a lead acid battery?
Individual lead acid cells have a nominal voltage of 2 volts (sometimes listed as 2.1 volts). You can buy 2V lead acid cells and connect them in series-parallel configurations to build a battery bank with your desired voltage and capacity.