Does anyone have reliable written statements about the MAXIMUM voltage that regulator will hold at ? Please post it. So all of us can know what is correct.
Here is what IA thinks it is ...
For a 12-volt system, an Evinrude rectifier-regulator should hold the maximum voltage between 14.5 and 14.9 volts DC. The regulator's job is to prevent the output from exceeding this range, which protects the battery from overcharging and other electrical components from damage.
Factors that influence voltage output
Operating speed: On a properly functioning system, the voltage will increase from the battery's static voltage (around 12.6V) to its regulated maximum as the engine's RPM increases.
Component health: A faulty rectifier-regulator can cause the voltage to climb well above 15 volts, which is a sign of an overcharging problem. Conversely, a bad or weak battery can prevent the regulator from functioning correctly and holding a steady voltage.
Model variation: Some older or alternative units may have slightly different specifications. For example, some aftermarket units might list a minimum charging voltage of 14.5V with a tolerance of +/- 0.5V, putting the maximum at 15.0V.
What to check if your voltage is too high
If you are measuring a voltage over 15 volts with the engine running, it likely indicates a problem with the rectifier-regulator. To troubleshoot, you should:
Fully charge and test your battery. A faulty battery can lead to erratic charging system behavior.
Inspect all connectors for any corrosion or damage.
Test the rectifier-regulator itself to see if it is failing to regulate the voltage properly.
