Battery Voltage

[Vision]

After sitting for 36 hours the battery voltage is 13.25v.

[scooterfan]

After sitting for 36 hours the battery voltage is 13.25v.

I think that battery has a problem. What was the voltage reading just after the engine has been switched off ?

You can get some information about 12 Volt batteries here :

https://www.batterystuff.com/kb/frequently-asked-questions/powersports-batteries-faq/12-volt-battery-reading-13-volts.html

[Vision]

I assume it was 13.5v as before. This weekend I may have time to measure the signal from the stator. Thank you.

[CROSSBOLT]

Maybe your voltmeter has a problem. Fully charged lead-acid battery is 12.6 vdc (2.1 v/ cell x 6 = 12.6) 13+ volts after hours sitting not connected to anything points to voltmeter. Even if still connected to bike this is too high if engine not running.

[Vision]

I believe I measured the stator output correctly after watching some YT videos. Results:

135v AC at idle
300v AC at throttle

Does a new stator need to be OEM or will an aftermarket work? I've been waiting a month for a OEM CDI order with no signs of new news.

What should the numbers be? 12v and 65v?

[Vision]

I'm watching the video again and maybe I did it wrong. There isn't a green ground wire (of the three pins there are only two wires going in. There's a wire going into the upper slot and the lower side by side slots only have one.)

I put both meter connectors on 2 of the 3 pins that have inputs; the black got the upper. Maybe I should have grounded the black to the bike and taken two measurements with the red probe. Thoughts?

[Vision]

Stator readings using the frame as ground and measuring the two pins separately.

130v - 500v
125v - 250v
idle - throttle

[scooterfan]

Stator readings using the frame as ground and measuring the two pins separately.

130v - 500v
125v - 250v
idle - throttle

I haven’t done a similar test and I am not sure how your test was done. Maybe if you can explain I can try a similar test to compare.

Anyway - a couple of minutes ago I decided just to do a simple test at my Agility’s battery just to tell you what a normal volt reading is suppose to be when the engine is running.
I was very surprised that the reading was about 17.6 Volts at idling speed !

The current Voltage Regulator on my Agility is an aftermarket component from China. It has been installed some time ago, and just after installation the Volt reading was definitily lower than 14 Volt.

Fortunalety I always keep a new Regulator in stock, and a brand new Chinese Regulator has been installed a couple of minutes ago. The Voltage reading is about 15.2 Volts at any given engine speed.

[Vision]

Interesting.

For the test I used this.



There's only two wires going into my three pin connector so the last test was done twice; the multimeter's red probe went to each pin while the black probe was grounded to the bike. Results are above.

[scooterfan]

Okay, Unfortunately it is already dark on our side of the pond and I will try to compare tomorrow.
Unfortunately I will be alone at home and I hope to make a plan to rev the engine up while handling the multimeter.

[scooterfan]

Stator readings using the frame as ground and measuring the two pins separately.

130v - 500v
125v - 250v
idle - throttle

Just to make sure about these readings - I assume you mean:

Volt reading at idle = 125 to 130 Volts
and
Volt reading at full throttle = 250 to 500 Volts ?

[Vision]

No.

The stator connector has 3 slots with pins. One of the slots doesn't have a wire going into it so it's not measured.

In the other two pins, using the AC setting:

In one slot (with the red probe pushed into it) it measured 130v at idle and 500v throttling.
The other slot (with the red probe pushed into it) measured 125v at idle and 250v throttling.

For both measurements the black probe was touched to the frame for ground.

[scooterfan]

No.

The stator connector has 3 slots with pins. One of the slots doesn't have a wire going into it so it's not measured.

In the other two pins, using the AC setting:

In one slot (with the red probe pushed into it) it measured 130v at idle and 500v throttling.
The other slot (with the red probe pushed into it) measured 125v at idle and 250v throttling.

For both measurements the black probe was touched to the frame for ground.

Thanks.
I just tested mine and these are the results.

1. Yellow wire from the stator - 30 Volts at idle and about 156 Volts at throttle.
2. White wire from the stator - 37 Volts at idle and about 152 Volts at throttle.

At times the Volts seem to spike quite higher at throttle but I am
not too sure whether it has to do the the multimeter I am currently using. My previous multimeter started giving problems some time ago and I am using my son’s multimeter at the moment. I am not sure about quality. It could also be caused by unstable multimeter connections because I was holding both probes with one hand.
I am not concerned about the results of this test. AC current is suppose to be quite higher than the scoot’s required Volts. AC output usually depents on stator specs.
No bulbs were blown in my case - so I will just get a spare Voltage Regulator just in case.

[CROSSBOLT]

Frequency sensitive on AC scale.... rpm goes up so does frequency to a reading error.

[Vision]

Thanks scooterfan, yours seem healthy. Mine on the other hand has a fever. (: