I just checked my 2004 ZT 260. My charging voltage is also exactly 14.5 volts on tickover. At 2500 revs, still 14.5 volts. I never thought about this, but I have had minor battery acid leakage which caused me to remove the slightly corroded battery plate and refurbish it. I also found that someone hadn't put back in the battery drain tube properly. Since the drain was installed correctly, the corrosion has stopped. Anyone know where the voltage regulator is and should it or can it be altered to a lower voltage? My ctek charger also seems to be at 13.7. I'm taking a keen interest in my electrics just now as I have a 1.4 amp current draw from the battery with ignition off. If I remove the 50amp fuse from the fuse box, the current drain stops completely. Anyone got a circuit diagram for tracing what comes off FL3
