Motorcycle Battery Voltage Range

A 6v battery is comprised of three cells giving a total voltage across it s terminals of 3 x 2 1v 6 3 volts.

Motorcycle battery voltage range.

If the voltage instantly drops to 0 volts that is also a problem. Motorbike batteries are made up from a combination of such cells connected in series to give the required voltage. 12 volt motorcycle batteries supply useful energy only through a limited voltaic range from over 14 volts when fully charged and rested down to 10 5 volts in use under load this battery is noticed when lights dim or your motorcycle is hard to start. A fully charged 12 volt motorcycle battery should measure about 12 6 13 5 volts between terminals depending upon its chemistry.

The full range of the battery is from just over 14 volts when being charged by the bike running at high rpms down to 10 5 volts under heavy load for example when the lights are on and the bike is being started. Here is a quick breakdown on the spectrum of voltage ranges. No 12 volt battery will remain at over 14 volts for more than seconds unless it s being charged. 12 volt batteries supply useful energy only through a limited range from over 14 volts when fully charged and unrested down to 10 5 volts in use under load when lights dim your motorcycle is hard to start.

5 use a multi meter and test your battery s voltage range. We call this the open cell. When any 12 volt battery is discharged below 12 4 volts sulfation begins to occur within the battery. A good battery should read between 12 4 to 12 6 volts 12 6v being optimal.

A battery is at a discharge anywhere from 11 9 to way below that range. The following table shows how battery voltage corresponds with state of charge at 80 degrees f. Place the voltmeter leads to the battery terminals. If the battery begins to hold and then steadily drops in voltage there is a problem.

Likewise a 12v battery is made up of six individual cells giving a total of 6 x 2 1v 12 6 volts. 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. 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.