Battery overcharging.

[katt]

I have new Rectifier Regulator (RR) and old one have same exact problem, they work okay with AC keeping it like 11.5-12V, but my battery goes gets 14v on 3000rpm and up to 17v on 7000rpm.

Is there anything other than RR that could be causing this?

[oakleyscoot]

Nope:

Regulator portion of rectifier controls voltage going to the battery. Typically 13.8 - 14.2 is the norm.

13.8 lower end to get the battery charging
14.2 upper end of voltage limit, typically voltages above 14.2 will cause "gassing" which is bad for a battery.

my .02¢

[katt]

Why brand new regulator is not functioning correctly?

Well it was $4.20 but still it should not suck like this.

Another problem i dunno if this is related or separate issue

When i on idle say on the traffic light on idle and press horn i get light dimmer while horn is working, this does not happen on high RPM. 

Headlights are flickering little bit while working when i look at them and when i increase RPM it gets significantly brighter.

Headlight has two 12v 18W bulbs, this is in low beam mode.

Could this due to stator not generating enough watt's on idle?

[scooterted]

17v is bad. I would expect it to be the regulator, ive yet to learn alot about scooter 12v systems. But any 12v system running at 17v is very bad, burned bulbs and components and stuff.

Its very common for headlights to get brighter than idle while revving. My scooter does it. Older cars with weaker charging systems sometimes do this too.

Edit: 14v is fine though.

[katt]

Jun 7, 2018 18:37:46 GMT -5 scooterted said:

17v is bad. I would expect it to be the regulator, ive yet to learn alot about scooter 12v systems. But any 12v system running at 17v is very bad, burned bulbs and components and stuff.

Its very common for headlights to get brighter than idle while revving. My scooter does it. Older cars with weaker charging systems sometimes do this too.

Thing with scooters they supply two separate lines ~12V DC (range 13-14.8v) to charge the battery and ~12V AC (range 11.5-12.5v) to the lights and all other electronics, on my scooter regulator supply steady 12V to electric accessories only battery line is badly overcharging, however i did ride like this for a while no issues.