Battery voltages vs battery charge condition

Eddy vK this table of battery voltages vs battery charge condition.

About 12V lead acid batteries: You can indeed tell from the voltage how full the battery is, but only after you have left the battery alone for about 3 hours or longer. So this would mean 3 hours of non-operation of the bike with the ignition off. Here is the table:

• 12.7V - 100% full
• 12.6V - 90%
• 12.5V - 80%
• 12.3V - 70%
• 12.2V - 60%
• 12.1V - 50%
• 12.0V - 40%
• 11.8V - 30%
• 11.7V - 20%
• 11.6V - 10%
• <11.6V - 0% and probably damaged from discharging this far down.