Overcharging Issues, multiple rectifiers

[dexameth]

So I'm riding my old naked 4 stroke 88cc QMB around and I notice the volt meter is reading 16 volts 😬

I swapped rectifiers that I had at home, same thing... so I purchase a new one and it does the same!

The volt meter reads correctly, it's been tested. My stator is hooked up with ONLY the white wire connected to the rectifier, the rectifier is grounded to common ground and the output is feeding the battery directly. A direct charge circuit, my lighting is LED hooked up DC, the regulated circuit is bypassed on the wire harness and not even plugged in from the stator.

I don't understand why, with three different rectifiers, I'm overcharging! I rarely ride the scoot, so the battery is still healthy enough to use but I'd like to figure this out. Doesn't seem to difficult...

Stator > rectifier > battery

[snaker]

Something to remember is that these RR (assuming you have a RR rather than separate regulator and rectifier) regulate by sinking excessive voltage to ground.
So ground is a important part.
Check all ground connections for clean continuity and security.
Also the RR body itself serves as both a electrical ground bond and a heat exchange point.

If I read right, your using a single phase half wave stator/RR but aren't using the low power output?
If so, you have a good candidate to convert to a single phase full wave setup.
There's a nice write up on here about that project

[dexameth]

Yeah, I eventually did the full wave conversion and it holds 14.9 under wide open, but idle still has low charging. Oh well. Has been self charged enough to ride for months now and not use a wall charger!