How many amps does a stator put out?
Noah Mitchell
Published Jan 08, 2026
They are usually designated by amperage out put such as a 22- amp or a 32-amp system. Until recently the easiest way to tell the systems apart is by looking at the plugs that connect the stator to the regulator. Since many of these systems can be interchanged sometimes people use a different system when replacing them.
How much power does a stator put out?
For each 1000-rpm, a 32-amp stator should have 18 volts AC (VAC) per it. It should be 36 VAC by 2000. 54 VAC is what it should be at 3000 RPM. Each system should produce a certain amount of electricity.
How many volts does a stator put out?
A stator will put out somewhere around 70 volts AC (on average), unregulated and unrectified at high rpm.
What is the output of motorcycle stator?
You now can test the voltage between the terminals of the stator coil at 3,000 rpm. Depending on your motorcycle, you should get a reading of anywhere between 20 and 50 volts.
What does a stator power?
The stator is the coil of wire housed inside the engine case. A magnet on a shaft spins within the stator, creating alternating current (AC). That current travels along fairly heavy gauge wire through the case and into the rectifier/regulator which converts it to DC power, and at a consistent output.
26 related questions foundDoes a stator need power?
They do require batteries for power, however, which is a potential drawback in comparison with a motorcycle's alternator system. Because a stator generates its own electricity, motorcycles have systems which are relatively lightweight compared to those in a car or truck.
What is stator current?
The stator current is calculated by dividing the phase voltage by the equivalent complex impedance of the entire circuit shown. The speed of the stator magnetic field in radians per second is 4xPixf/poles. The speed of the rotor (mechanical speed) is the speed of the stator magnetic field minus the slip.
How many amps is a motorcycle alternator?
The alternator is rated at 400 Watts (over its full temp/speed range). This means it can provide about 28 Amps.
Does a stator charge the battery?
In simple terms, the battery provides this power. The battery would quickly be depleted, though, if not for the star of the charging system show, the stator. Think of your stator as the piece that makes electricity to keep your battery charged up to make all that electrical stuff on your bike work.
Can you test a stator with a multimeter?
Generally, you can check motorcycle alternator stators while they're installed on the bike, using a quality multimeter. The tests will help you to identify or eliminate the stator as the problem in a charging issue.
How do I know if my stator is AC or DC?
The stator styles (AC or DC)refer to the available ignition power. A AC style stator will have the odd ball paper covered pole/s that generate ac ignition power. It includes a ac lighting coil output circuit and a ac ignition power coil circuit. A DC style stator will not have the oddball poles for ignition power.
How many volts should a lawn mower stator put out?
Step 4. Check the output, which should always be at least 30 volts. Your owner's manual will have the exact required output of your stator. If the tested output is lower than 30 volts, the stator usually needs to be replaced.
Does a motorcycle battery charge while idling?
Technically, a motorcycle battery does charge while the motorcycle is idling though it does not provide as much amperage as when the motorcycle is at higher speeds. During a normal ride, a motorcycle provides about 13, 14, or 15 amps while idling only provides less than 1 amp.
Can a motorcycle run without a rectifier?
you cant damage anything by unplugging the rectifier, all that will happen is your bike will run of a battery that is not being recharged at the same time, so you will run out of juice rather quickly and the bike will shut off, thats it...
How much voltage is needed to start a motorcycle?
You'll need at least 12 volts under load to kick a motor over for any period of time long enough to start it.
How many amps should I use to charge my motorcycle battery?
Recommended ampere for charging motorcycle battery
Generally, motorcycle batteries need to be charged between 1-10 times their rated amperage. for example, a 12v 10ah battery needs to be charged at the rate of 1.2 amps to get it fully charged, while a 6v 4ah battery would need about 5 amps.
Can you charge a motorcycle battery at 2 amps?
The rule of thumb is that you should never charge a battery at more than one-tenth its rating in amp hours. Meaning that a 20-amp battery should be charged at no more than 2 amps over a 10-hour period.
How many cold cranking amps do I need for a motorcycle?
Cold-cranking amps provide reliable startups in cold weather, states Ultimate Motorcycling. Ideally, look for a battery with at least 300 CCA. The value should be easily located on the battery's outside housing.
How do you calculate stator current?
Therefore, the frequency of induced current or voltage in the stator winding is f = Ns P/120—the supply frequency. When the rotor is stationary, s = 1. Under these conditions, the per phase rotor e.m.f. E2 has a frequency equal to that of supply frequency f.
What is a stator winding?
The stator is fitted with a three-phase winding. A rectifier is used to convert the power from alternating to direct form. A regulator is used to control the field current so that the output voltage of the alternator-rectifier is properly matched to the battery voltage as the speed of the engine varies.
Can a motorcycle run without a stator?
Without a stator, your motorcycle will not get any spark at all as your battery is not capable of supplying the appropriate power levels to generate a spark. As a result, if your stator is going bad your motorcycle will run very poorly. Eventually, your stator can prevent your motorcycle from starting at all.
Is 14.6 volts too much?
14.8 would start to be a worry (there might be liquid or corrosion on the battery) and 15 volts would be a real concern, but 14.6 is fine. Less than 14.3 would be a "weak" alternator or regulator. Much less than 14.2 at a fast idle is bad wiring, bad alternator or regulator, or a bad connection or fuse link.