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The voltage should be in the range of 13.2 to 14 or so volts. It should not go over 15 volts.
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How can you know if your alternator is bad?
Check the voltage output at the battery posts with a multimeter set to DC voltage in the 20 volt range engine idling. You should get from 13.5 to 16 volts. Any more or less and the alternator is bad.
Can you connect a 12 volt auto alternator to a 24 volt system to charge the batteries?
If you connect an alternator that has been designed for charging a 12 volt battery to any 24 volt system in an attempt to charge its batteries, that alternator will not work because of either of two different reasons:if the 24 volt battery is completely dead or flat the 12 volt alternator will not be able to charge it to much above 18 volts. That is about as much practical use as having a flat 24 volt battery!if the 24 volt battery is not "flat" but has a voltage that is in its normal range - between about 23 volts and 27 volts - the 12 volt alternator would not do anything because its output voltage cannot go high enough.Some more facts:12 volt systemsAn alternator designed to charge a nominal 24 volt battery will have a voltage and current regulation system to control its output voltage between about 13.5 and 18 volts and an output current that could vary between zero and about 40 or 50 amps.The overall range of current amperage output from the alternator would vary from vehicle to vehicle depending on the sizes of the alternator and battery and those in turn would be sized to match the likely normal current amperages drawn by the vehicle's ignition, night-time road lighting, air conditioning and other systems.The actual charging voltage and current being output from the alternator at any instant depends on the "state of charge" of the 12 volt car battery. A nominal 12 volt lead-acid type car battery that is flat has a voltage of about 11.5 volts or less. One that is fully charged would have a voltage of about 13.5 volts.24 volt systemsAn alternator designed to charge a nominal 24 volt battery will have a voltage and current regulation system to control its output voltage between about 27 and 36 volts and an output current that could vary between zero and about maybe 80 or 100 amps.The overall range of current amperage output from the alternator would vary from vehicle to vehicle depending on the sizes of its alternator and battery and those in turn would be sized to match the likely normal current amperages drawn by the vehicle's ignition, night-time road lighting, air conditioning and other systems.The actual charging voltage and current being output from the alternator at any instant depends on the "state of charge" of the 24 volt vehicle battery. A nominal 24 volt lead-acid type battery that is flat has a voltage of about 23 volts or less. One that is fully charged would have a voltage of about 27 volts.Only in the instance where two 12 volt batteries were connected in series to produce power for a 24 volt system, could a method be devised to use a 12 volt alternator to charge the batteries independently.
How do you check Subaru alternator?
The easiest way to check any alternator in a car is to have the vehicle running and use a VOLT meter to read across that battery terminals. The voltage should be in the range of 13.4 volts to 14.5 volts..no lower, no higher. If either low voltage or high voltage exist, that alternator is probably defective.
How do you check if the alternartor is not charging on megane?
Use a volt meter and check the DC voltage at battery terminals with engine running. It should read in the 13-14 volt range, if below then alternator is no good.
What is the voltage output from alternator to battery?
Normal voltage will be in the 13.5 to 15 volt range engine running turning about 2,000 rpms. It shouldn't exceed 16 volts or it will boil your battery. If it does not run in this range then you need to replace the voltage regulator. These days that is usually done by replacing the whole alternator as a unit. It is usually the most cost effective method of repair.
What would cause the volt meter on 1994 Le Sabre to bounce up and down.?
It could be the alternator. Unlike the old generators that generated a DC voltage, the alternator generates an AC voltage. Diodes are used to convert this to a DC voltage. If a diode fails, the AC voltage will come through. Many auto parts stores can check the alternator while it is in the car. That is the first thing I would check.
How do you tell alternator is bad?
The best way is to drive it to your nearest auto parts store and have it tested. You can test it somewhat yourself. Start the engine and use a volt meter to test the voltage that is being supplied by the alternator for the battery. If it is less than 13.5 volts the alternator is bad.
Which type of voltage is 230 volt?
The classification of 230 volts is in the low voltage range.
Your volt meter reads 16 volts at the battery at idle The alternator and voltage regulator have been replaced Do you have a problem?
Alternator Output Voltage RangeGenerally, alternator output voltage is consider OK if it is in the range between 12 1/2 volts to a maximum of 16 volts.Therefore, although the output is at the maximum, you do not seem to have a problem.Usually, if the battery has had a lot of drain, then the alternator output will run at the maximum until the battery is fully charged.
How do you know when to replace the alternator?
You need to get it tested. Auto Zone, Checker Auto, Kragen Auto or any of the local consumer auto parts distributors will check it for free. Call around if you have any questions. In general, if you want to run a primitive test yourself you can use a volt meter. Test the voltage before starting the engine, it should be around 12 volts, maybe a little lower if the battery isn't fully charged. Then start the engine. With the engine running and about 1000 RPM you should have 13.5 Volts at the battery. the easiest is to go to the local parts store most can check them right on the car. compare engine off voltage to engine running voltage. If it does not go up during engine running it is probably bad. Hey Lakisha==Take it to Auto Zone and they can check it out for free. Goodluck Joe If it is makeing a noise or is not putting out at least 13.5 volts it is bad. Take the car or the alternator to an Auto Parts store and have them load test the alternator to be sure. Just disconnect one of the battery post.If engine dies your running on battery.Are have an auto store check it for free they test load it. E.C.H Depending on the vehicle< it could range from the alternator gauge not registering a charge to an alternator light on the instrument cluster staying on. The easiest way to check this is to get a voltage meter and run it across the two terminals on the battery with the engine running. If you get a charge of 13.8 +/- 1 volt then it is charging if below with the engine running then the alternator is done. when the car is started disconect your battery and turn on your lights. if they are dim or dont come on your altinator is bad. Use a volt meter and measure the voltage on the battery with car NOT running. It should read 12 volt. Turn on the engine and measure the voltage on the battery again. If the alternator is good, the voltage should be 13+ or 14+ volts. If the alternator is bad, the voltage would be the same or less than 12 volt. If your battery is bad, the voltage would be less than 12 volt. You can also bring your car to an auto parts store and they will check it for you for free. have it tested,loss of electrical power is usually battery or alternator if happens slowly Disconnect the battery cable and see if your engine keeps runing. If the engine stops running your alternator isn't putting out any electrical power to your engine. Replace your battery cable and go have your alternator tested. If your alternator is good then start looking for a short somewhere. Sometimes the bearing inside the alternator will begin to make noise, not always. You can started the car, turn on the headlights, and then other accessories to see if the headlights dim when they are turned on. Alost of places like Autozone, Checker, and NAPA can bench test the alternator for you. Does your battery go dead when you drive for any length of time with the headlights on. If so there is a pretty good chance that your alternator is bad especially if the voltage regulator in internal (inside the alternator)
How can you tell if its your battery or alternator?
With the engine running check the voltage at the battery with a DC volt meter. It should read from 13.5 to 15.5 volts if the alternator is good. Or, you can drive it to your nearest auto parts store where most will check the charging system for free.
How do you test an alternator with a volt tester?
Check the voltage with a volt meter at the battery with the engine running at idle. You should read 13.5 to 15.5 volts. Any less and the alternator is not charging properly.
