Answer
Apr 18, 2025 - 05:27 AM
Yeah, if your Kodiak 400 is showing 18 to 20 volts at idle, that’s way too high. It should be more like 13.5 to 14.5 volts, even under load.
Overcharging like that usually points straight to a faulty voltage regulator/rectifier. That unit’s job is to take the AC voltage from the stator and regulate it down to safe DC voltage for the battery and electrical system. When it fails, it can let full stator output hit the battery unchecked, and that’s what fries fuses, bulbs, and eventually the battery itself.
A few things you can check:
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Make sure the regulator is properly grounded. Bad ground can cause false voltage readings or wild charging.
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Check for loose or corroded connectors between the stator, regulator, and battery.
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If you have a multimeter, you can test stator output (AC) separately to make sure it’s not pumping out crazy voltage on its own (but 99% of the time, it’s the regulator).
In any case, a proper troubleshooting guide should be very helpful here — which is what you get when you grab this manual. The OEM manual also contains the step-by-step for testing both the stator and regulator, including resistance checks and proper voltage ranges.
