Battery Fully Charged Voltage. Similarly 6V and 24V AGM batteries should have voltages of 63565V and 25426V respectively. A fully charged battery will typically display a voltmeter reading of about 126 to 128 volts.
Specific gravity will be about 1265 for a fully charged cell and 113 or less for a totally discharged cell. If your voltmeter is showing a voltage anywhere between 124 and 128 that means your battery is in good shape. Any voltage above 129 volts is a good indicator that your battery has excessive voltage.
A green dot tells you the battery is 75 percent or more charged.
A reading of 1266 volts indicates a fully charged battery. Digital Voltmeters should read as the voltage is shown in this document. If your voltmeter is showing a voltage anywhere between 124 and 128 that means your battery is in good shape. Charging Information For Lead Acid Batteries Battery University.
