From Ionbeam, resident FJR GURU on fjrforum.com!
Posted 04 April 2008 - 07:21 PM
Excerpted from a previous thread
With a good charging system, and a healthy, properly charged battery I would offer these guidelines for sustained voltages:
≤12.8 volts at the battery terminals – the charging system is over taxed, the battery is being discharged, and the stator is in danger of being permanently damaged.
12.8 to 13.2 volts – entering the danger zone, the battery is no longer being trickle charged and the stator is being taxed to the limits.
13.2 – 13.7 volts – sustainable, the stator is taxed but the battery is being charged.
13.7 to 14.5 volts – schweet