Fully Charged Voltage Of 12 Volt Battery. In fact 12 volt is just a term used to distinguish one battery from another. If your voltmeter is showing a voltage anywhere between 124 and 128 that means your battery is in good shape.
Voltage on a fully charged battery will read 212 to 215 volts per cell or 127 volts for a 12 volt battery. Your 12 volt DC battery starts out at about 128 volts when fully charged. The actual resting voltage or the voltage a battery will settle at 12-24 hours after being removed from the charger is closer to 21 volts per cell or about 64 volts for a 6v battery and 127 volts for a 12v battery.
Then theres the Float Voltage which is a level that.
These numbers assume 100 healthy cells and may vary. Does anyone know the correct charging voltage for the 12 volt battery. I have a number of 12V AGM batteries that I have fully charged and the resting voltage measured several days after charging was completed with no discharge ranged from 1296 to 133V. You have to apply a voltage that is higher than the battery voltage in order to get it to charge.
