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A charging voltage of 14.3 volts for a typical lead-acid 12 volt battery is reasonable. The "normal" voltage is 13.8, but anything in a range of 13.5 to 14.5 is OK, depending on temperature.
If the battery is going dead over night after having been charged, the either the battery is bad or there is some load on the battery.
To check for load, place an ammeter in series with one of the leads. There should be no or little current flow.
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How does an alternator produce different amps?
It depends on the load and the voltage. In an automobile, a battery will typically have a voltage of about 12 Volts. If the engine is not running and you turn on the lights, the lights will start drawing current from the battery and the voltage will drop by a volt or so, depending on how strong a charge the battery has. An alternator will produce in the neighborhood of 15 Volts. If it is trying to push current into a system with a fully charged battery, it will only be able to push a few amps. If the voltage in the battery drops, the alternator will be able to push more amps. A completely dead battery will draw the most current (amps).
How do you get in to your trunk if your battery is dead?
a key...Charge your battery
When was Dead of Night created?
Dead of Night was created on 1945-09-04.
When was Night of the Living Dead Boys created?
Night of the Living Dead Boys was created in 1981.
How much energy efficiency loss occurs in recharging a storage battery.... does a recharger use more than the 100 percent charge to fully recharge a dead battery?
Batteries operate by converting electrical energy and storing it as a chemical reaction; the are various factors involved, but this reaction is not 100% efficient; the conversion process from electrical to chemical energy itself requires energy, thus you lose energy both in the storage and discharge cycles. According to one source, computer batteries are the most efficient, but still waste 30% of the energy they use in the charging process. Some small batteries waste up to 80% of the energy that goes into charging them. So, in short, if you consider the energy your device gets out of a battery as your "100 percent charge" the recharger will actually use anywhere from 30 to 80 percent more energy charging that battery
Why is your car battery light on?
Could be a warning that the alt. is not charging. So, if you do not want to end up with a dead battery somewhere, have the volts checked right from the battery.
Why alternator charging low and battery dead after a while running?
If the alternator is not producing 13.5 to 15.5 volts it is defective and needs replacing.
Why battery not charging?
Dead cell or short in the battery.
Why is your battery not charging when you drive?
dead battery dead alternator dead voltage regulator each needs to be tested.
How can you test your alternator if your battery is dead?
A lot of auto part stores will test them for free. Give them a call. Your alternator can only be tested when the engine is running, therefore you will have to get a boost or use a battery charger for the battery. If you have a voltmeter, test at the battery terminals with engine still running, if you get 13.5 to 14.7 volts, the alternator is charging. In some cars, the voltage could go over 15 volts if the battery is close to dead (right after being boosted), but the voltage should go back to normal as the battery gets closer to fully charged. Turn off the engine, the voltage will go down to 12.5 volts if the battery is now charged, lower if is not. If there is no change, the alternator is not charging. KGP484
Will the alternator run the battery low?
If the alternator is not charging the battery, then it will eventually go dead If the voltage regulator (in the alternator) is defective it will eventually kill the battery Check the alternator with a voltmeter A fully charged battery (without engine running) should read approx. 12.8 volts With engine running should read 13.8-14.2 volts
What voltage will a dead car battery read?
12.6 volts 100% charge 12.4 volts 75% charge 12.2 volts 50% charge 12.0 volts 25% charge Any less and the battery is essentially dead.
Why do some laptops say charging battery but doesn't charge it?
The battery is probably dead.
How you can check 12 volt battery?
Check the voltage at the battery with a DC volt meter. It is reads 12.6 volts is it 100% charged. 12.4 volts 75%, 12.2 volts 50%, and 12.0 volts 25% charged. Less than 12.0 volts is a dead battery. If the battery will not hold a charge with the negative cable disconnected it has a dead cell and must be replaced.
When the switch is on there is 12.2 volts when you crank it is only 0.4 volts in the system?
What system? Some circuits go to 0 volts when cranking. If you are reading voltage at the battery, then the battery is dead.
Can you charge a dead battery by getting a second car that is running take the good battery out of the running car and put the dead battery into the running car as a means of charging it?
No, this will place a very heavy load on the alternator of the car and may result in burning out the diodes of the car charging the battery. You could easily ruin the alternator. Purchase a battery charger and charge the dead battery with that. Alternators are not made to charge dead batteries.
Ipod left charging now dead?
bad battery most likely.
