High Voltage Across Battery.

The type of stator you have shouldn't really matter.
The regulator should do it's job and control the voltage to about 14v max regardless.
How's it wired?
Are the AC / DC ccts mixed perhaps- ie is the AC cct going to the battery?

I have heard that a bad battery itself could cause the high charging voltage. Also corroded cables. Perhaps hook up to a known good battery (car battery even) and retest.

Those tiny batteries don't last very long and if you are not keeping it plugged into a good high tech charger when not in use the life span is even less.

Allow the battery to sit overnight (without putting a charger on it) and measure the voltage. If less than 12 volts it may be toast.

Charge it with an Optimate 4 charger until fully charged, let it sit overnight and then test the voltage. If less than 13.5 it may not be good.

If it is more than 2 years old without being kept on the float charger it may need replacement.

I think that is perfect. Don't forget to keep the battery plugged into a good float charger. I believe Taffy has some Optimate 4's.

xbakerbob said:

(yes i know it`s gone midnight here in the uk but my nehbours are old and deaf i hope)

Click to expand...

Well if they weren't deaf before.... :mrgreen:

14.5v looks fine, and that's good advice on the float charger.

Some voltage regulators go as high as 14.6 volts or so, and most will reach at least 13.8 if the battery needs it. But over 15, near 16? Regulator is broken or something nearby is fubar.

CodeMonkey said:

Some voltage regulators go as high as 14.6 volts or so, and most will reach at least 13.8 if the battery needs it. But over 15, near 16? Regulator is broken or something nearby is fubar.

Click to expand...

Wouldn't that be the broken earth he just found and fixed near the rectifier? From what he said I assumed he was now getting 14.5v across the battery with the engine running, which as you say is in the normal range.

petem said:

CodeMonkey said:

Some voltage regulators go as high as 14.6 volts or so, and most will reach at least 13.8 if the battery needs it. But over 15, near 16? Regulator is broken or something nearby is fubar.

Click to expand...

Wouldn't that be the broken earth he just found and fixed near the rectifier? From what he said I assumed he was now getting 14.5v across the battery with the engine running, which as you say is in the normal range.

Click to expand...

That is correct, if the regulator doesn't have a good connection to ground it has no where to shunt the excess voltage-problem solved.