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Why does the battery voltage fluctuate from 14.4 volts to 12.6 volts and back again while driving?
Wiki User
∙ 15y ago
The battery in your car does not constantly charge while driving. Electricity is needed to run the headlights, starter, radio, etc. In order to save wear on the alternator/generator, the battery is sometimes used to power these electrical devices as your car's internal sensors see fit. When the battery's charge drops below a certain voltage, the alternator kicks in again to keep the battery at its optimum level.
Wiki User
∙ 15y ago
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How much volts can a AA battery supply?
AA zinc and alkaline batteries normally provide 1.5 Volts when they are new. The voltage will drop as the battery discharges. Rechargeable batteries using NiCad or NiMH technology deliver 1.2 Volts when fully charged. Again, the voltage will drop as they discharge. It is this small voltage difference that can make rechargeable batteries less effective for some voltage sensitive applications,
How is a battery leakage test conducted?
Set your voltmeter to a low DC Volt range. Connect the negative lead to the battery's negative post. Then move the meter's positive lead across the top and sides of the battery case. If some voltage is read on the meter, current is leaking out of the battery. The battery should be cleaned and then rechecked, If voltage is again measured, the battery should be REPLACED; the case is porous or cracked! BE CAREFUL BATTERY'S CONTAIN HARMFUL GASES, FUMES, & ACID! WEAR GLOVES AND BE SMART ABOUT THIS! IF YOU DO NOT KNOW WHAT YOUR DOING PLEASE BRING TO A PROFESSIONAL MECHANIC or SOMEONE WHO KNOWS WHAT THERE DOING! Any questions on auto mechanics email Rdyoungiii@yahoo.co.uk and ill be glad to answer your questions
Can a corroded battery be cleaned and used again?
Technically yes it can if it still have power, also it depends on why type of battery.
What is wrong with your battery if it doesn't charge on a charger but will jump start?
Bad connection between the cable end and the battery post or a dead cell in the battery. When you jump a battery, the jumper cable is attached to the battery cable, not the battery itself. Clean the post, either top or side and the ends of the cables and try charging again. If it will not take a charge, it is a bad battery.
Will a 240V battery charger work when plugged into 110V will it charge at all?
You don't give the most important piece of information: what is the appliance that the battery charger is used for?That information is needed because the right answer to this question will depend on the power drawn by the battery charger. If it is a very small one designed for use in Europe for a camcorder or a mobile phone, then it should work OK if its label or rating plate says it can be used on a wide range of voltages, such as from 110 Volts to 240 Volts.Even if it does not say that on the label, because it is an old-fashioned "transformer-based" type which will only work on 230 Volts AC, you might be able to use a small type of "international travel" voltage transformer to convert the supply voltage up from 120 volts to 230 Volts AC. These can sometimes be bought at airport shops or usually they are available from electronics parts stores - Maplin Electronics in the UK, for instance.But that small type of "international travel" voltage transformer is not a cheap item to buy and it may actually cost you less to buy - in USA, Canada or wherever you are going to - the right type of battery charger that would be suitable for the battery in your appliance.If the battery charger is a very big and heavy one, taking a lot of power, you would have to buy a much heavier and more expensive kind, an "auto-transformer", to convert the supply voltage up from 120 Volts to 230 Volts AC at the much higher current. But, again, they are very expensive and it may actually cost less to buy the right type of battery charger for whatever the appliance is that you wish to use in USA, Canada or wherever you are going to. (The small "international travel" type of voltage transformer would not handle it, it would probably just blow its internal fuse or might even explode and die!)
Battery not charging 1991 ford areostar van?
Check the voltage of your battery, first thing to do. It should be 12+ volts shown in you battery tester. Then, start the engine and check the battery voltage again. If the voltage goes up to 14 to 14+ volts, it means that your alternator is working. It's time for you to replace the battery.
Does a bigger sized battery have a greater voltage?
A larger voltage rating: yes, of course. A larger size rating: these are not normally related to the voltage rating, which is separate. A larger physical size: normally this means a greater voltage, but again, they are not directly related to the voltage rating. Size has nothing to do with voltage. Battery voltage is controlled by the number of cells in the battery. Plate size affects current delivery.
Why wont your 1998 Ford ranger start all you hear is a click it has a new starter and the battery is fully charged?
You have a voltage drop in either the positive or negative battery cable. Clean all of your cable end connections ( at the starter, the engine block and again at the battery terminals). You have a voltage drop in either the positive or negative battery cable. Clean all of your cable end connections ( at the starter, the engine block and again at the battery terminals).
How you connect 40Ah and 28Ah batteries of same voltage?
It depends on the voltage you wish to use - if the voltage is, say 12 volts (and matches exactly), you could place in parallelel for 12 volt output, and the ability to serve more current. If you want 24 volts, put them in series. If you do place them in parallel, note the 28Ah battery will discharge sooner than the 40Ah, causing the 28Ah battery terminal voltage to drop, which will cause the 40Ah battery to attempt to charge the 28Ah battery up to the full voltage again.
How much volts can a AA battery supply?
AA zinc and alkaline batteries normally provide 1.5 Volts when they are new. The voltage will drop as the battery discharges. Rechargeable batteries using NiCad or NiMH technology deliver 1.2 Volts when fully charged. Again, the voltage will drop as they discharge. It is this small voltage difference that can make rechargeable batteries less effective for some voltage sensitive applications,
1996 Grand Cherokee 6 cyc Will not idle when started cold Runs normally when warmed up Is it a bad sensor?
I took the vehicle to the dealer service department. It turns out the vehicle battery was not providing the correct voltage. Once the battery was replaced, vehicle is running properly again. In the future I will check battery condition / voltage first.
How do you reprogram a 1999 Nissan Pathfiner battery?
Odd ... never knew batteries were "programmable" ... I mean, they hold a voltage which can be replenished and used over and over again.
How long do you charge a 9.6v rechargable battery pack for?
The charging time does not depend on the voltage of the battery. You have not supplied enough information to give a reasonable estimate. edit: Get a smart charger, and never have to worry about charge time again!
Battery will not charge on your 1986 v65 magna?
First, make sure the battery is good. Check the water level, then check the voltage. Must have more than 12 volts on the meter. If not, charge and check again. This will ensure that the battery does hold a charge. If all is good, then, with the engine running, check the voltage at idle, should have around 13 + volts, and at 2000 rpm, should have around 14 volts. If not, 2 things, the voltage reg. or the stator will have to be replaced.
I replaced the starter and battery one year ago and now they are bad again caused by failure of what?
Check Voltage regulator----Maybe overcharging battery. Both shortening life cycle and allowing too much voltaqe to starter
You used a battery charger to boost the car and messed up headlights any idea on what you did?
sound like a voltage spike. that's when voltage goes over 15 . more than likey replace the bulbs and they should work again.
If an 88 Accord DX has a new battery but will not hold a charge do the battery cables need replacing?
A bad alternator will run down the battery. Maybe. Lets check the simple stuff first.How do you know that it IS charging in the first place? Get a voltmeter (VOM) and measure the voltage of the battery when the car is off. It should be more than 11.5 Volts. (Or it is really discharged battery). The start the car and measure the voltage again. It sould be at least 13.5 Volts up to about 14.5 volts. If not then the alternator is not giving enough voltage to charge. If it is, then it could still be a diode in the alternator that is bad. You cold have some accessory or light that stays ON somwhere draining the battery. It could be a bad battery. It could be a bad set of battery cables.
