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13.1v is about the lowest possible charging voltage.. 14.0 to 14.8 is better.
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Battery won't charge?
Either the battery is bad and won't accept a charge or the alternator is not putting a charge into the battery. Have the battery tested. You can hook up an inexpensive volt meter to the battery while the car is running. You should see from 13.5 to 14.5 volts if the alternator is working properly. If it is less than 13.5 volts then the alternator is not charging.
Why new battery and alternator won't hold a charge when car is running?
The alternator does not hold a charge. It charges the battery. If it will not charge the battery then either the alternator is defective, battery is defective, or the connections are corroded or loose. You should read 13.5 to 15.5 volts at the battery with the engine idling. Check it with a DC volt meter. If you get less the alternator is defective. If you get much more the voltage regulator is defective.
Can you charge a 12 volt battery with a 14 volt alternator?
Yes. It is done all the time in automotive electrical systems. The alternator, which creates AC, has its current rectified using diodes.
The alternator battery and brake light are on in my Pontiac Sunfire and now it will not crank so is it the battery or the alternator?
Charge the battery, start the car and check the battery with a volt meter. Should have over 14 volts, if only say 12.4 to 13, then change the alt. or check the wiring.
If you put a new alternator in and a new volt reg what would cause a 91 f250 diesel to not charge?
Dead Battery. Are you sure your battery can maintain or hold a charge?
Why would the battery in a VW Jetta not be getting any charge if it has been replaced but you still have the same problem?
You need to check if the ALTERNATOR is giving the correct output so as to charge the battery. By having a volt meter across the batery terminals one can then rev the engine and the voltage accross the battery should be about 13.8 volt indicating that the Alternator is charging the battery. If this 12 volt bateery voltage does not increase, this indicates a charging problem (mostly with the alternator either the brushes or one of the diodes in the alternator).
How much volt battery can be charged by an alternator?
If we are talking about cars only: the system that charges the 500 volt battery in a Hybrid is a Alternator. So in theory there is no limit. Most cars are "12 volt" (common usage, incorrect) systems.
Can you charge a 6 volt battery with a 12 volt battery charger on slow 2amp charge?
No.
Can a 12 volt battery charger charge your battery?
A twelve volt charger will charge twelve volt batteries only unless it has a feature that allows you to change the chargers voltage. But on fast or slow charge 12 volts is 12 volts so most 12 volt chargers are only good for 12 volt batteries.
Can you use a 12 volt battery to charge a 48 volt battery?
No
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.
Can you charge an 8 volt battery with 6 volt charger?
No, you cannot charge an 8 volt battery with a 6 volt charger. The voltage of the charger must match the voltage of the battery.
