12 Volt Motorcycle Battery Voltage Chart

Percentage of charge 12 volt battery voltage specific gravity 100 12 70 1 265.

12 volt motorcycle battery voltage chart.

A healthy 12 volt motorcycle battery should maintain a range from 9 5 10 5 volts under the load for a good 30 seconds straight. Even though you are testing a 12 volt battery you should know that a battery that is truly 12 0 volts is a boat anchor. If the voltage instantly drops to 0 volts that is also a problem. No 12 volt battery will remain at over 14 volts for more than seconds unless it s being charged.

But first a few important notes and caveats. Motorbike batteries are made up from a combination of such cells connected in series to give the required voltage. Twelve volts is just a nominal convenient term used to distinguish one battery from another. A 6v battery is comprised of three cells giving a total voltage across it s terminals of 3 x 2 1v 6 3 volts.

State of charge what to do. With experience one can accurately determine state of charge using a voltmeter. If the battery begins to hold and then steadily drops in voltage there is a problem. Voltage is crucial when it comes figuring out whenever a battery is still good to go or when a battery is dead but of course there is more to the terms than meets the eye and they all have to do with how much voltage is floating within the cell of the battery.

Battery voltage reacts highly to charging and discharging. The following table shows how battery voltage corresponds with state of charge at 80 degrees f. As a battery is charged the indicated voltage increases and as discharging occurs the indicated voltage decreases. The chart is listed below.

When any 12 volt battery is discharged below 12 4 volts sulfation begins to occur within the battery. Fully charged our redtops including 34m bluetop will read approximately 12 6 12 8 volts and our yellowtops will read approximately 13 0 13 2 volts including bluetops with light gray cases. Voltages and specific gravity are listed for a 6 volt or 12 volt battery and battery banks of 24 and 48 volts. Likewise a 12v battery is made up of six individual cells giving a total of 6 x 2 1v 12 6 volts.

Lead acid batteries usually have higher and lower battery acid levels on the front and have a white clear plastic lower casing. Dead 12 volt battery of voltage range is it dead as a car battery. 12 volt lead acid or conventional motorcycle batteries can usually be distinguished by a row of plastic stoppers in the top 3 stoppers in a 6 volt battery and 6 stoppers in a 12 volt battery. A 12 volt battery is not a 12 volt battery.

We call this the open cell.