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Can you just test the volts of a rechargable AA battery to see if it is charged properly?
Mumford68
The easiest way to do this is with an inexpensive voltmeter available from Radio Shack, Fry's, Amazon, etc. The no-load voltage is only a little different from fully charged to nearly discharged. Depending on the exact battery you are talking about, the fully charged voltage might be about 1.28 or 1.3 volts, with a nearly flat battery reading 1.20 volts. Check your batteries when full and when nearly discharged and you will see the range. A much more crude test is to place the battery in a single cell flashlight and observe the brightness and color of the light.
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∙ 14y ago
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How do you tell if the alternator is bad in a 2000 jeep Cherokee sport?
Borrow a digital DC voltmeter, attach the meter to the positive and negative battery posts, if the battery is healthy and fully charged it should read 12.68 volts, now start the engine and monitor the voltmeter, if the battery is fully charged and the alternator is healthy the meter should read 14.2 volts (give or take .3). If the voltage fails to reach that goal the alternator is probably faulty.
How many cells are in a battery?
AnswerAccording to WikiPedia (http:/en.wikipedia.org/wiki/Rechargeable_battery), the nominal cell voltage of a Lead Acid wet-cell battery is 2.1 volts, this implies there are 6 cells in a 12 volt Lead Acid wet-cell battery.
1997 jeep grand Cherokee alternator test What is the best way to test the alternator and the voltage regulater?
use a voltmeter A fully charged 12v battery should read approx. 12.8 volts without engine running Should read approx. 13.8-14.2 volts with engine running
A portable radio that runs on AA batteries needs 33 volts to work properly How many batteries does it use?
22 (1.5 volts each) AA batteries
How many volts or amps are needed to charge a rechargeable AA battery in 10 minutes?
4,000 volts. Depending on the brand name, and how many times it has been recharged, or if it is lithiam nitrait.
How many volts should batteries have?
Fully charged battery should have 12.6 volts. 75% charged 12.4 volts, 50% charged 12.2 volts, & 25% charged 12.0 volts.
What voltage should a 12v battery be charged at?
12 volts!!! 12 volts!!! Real Answer 13.1 volts (Depending on Battery)
What voltage can a 12v battery be charged to?
It can be charged to approximately 13.9 volts.
How can you check your car battery with a voltmeter?
With the engine off check the voltage at the battery. A fully charged battery will read 12.6 volts. At 75% charge it will read 12.4 volts, 12.2 at 50% charge, and 12.0 volts at 25% charge. Now start the engine and check the voltage at the battery. It should read 13.5 to 15.5 volts if the alternator is working properly.
Will a battery still have 12 volts if it is bad?
Yes, a battery with only a 25% charge will read 12 volts. A fully charged battery will read 12.6 volts.
What should a 12v fully charged battery read?
A fully charged 12 volt battery will read about 12.6 volts, or 2.1 volts per cell.
How many volts should alt on 1997 S10 blazer put out?
With a fully charged battery (12.68 volts) and engine running at idle with no accessories on, 14.5 volts. You will not get a accurate reading if the battery is not fully charged.
Why after you replace a car battery would the car try to die when applying the brakes?
Perhaps the alternator is not keeping the battery charged properly Check the output of the alternator with a voltmeter a fully charged battery should read approx. 12.8 volts without the engine running With the engine running readings should go to approx. 13.8-14.2 volts
What is to be done if the battery voltage check shows less than 22.5 Volts in a battery?
What voltage battery are you referring to? An automobile battery is 12 volts and a fully charged auto battery should read 12.6 volts.
What does it mean when the battery light showes on the dashboard of a rover 25?
Alternator may not be charging battery properly Check with a volt meter With a fully charged battery and engine not running reading should be around 12.8 volts With engine running reads should be 13.8-14.2 volts
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.
A fully charged typical car battery has?
12.7 volts
