How to test car battery is charging battery,making your own lead acid battery desulfator,iphone 5c no battery life - And More

Via email, text message, or notification as you wait on our site.Ask follow up questions if you need to. First of all the oil pressure light on the dash shouldn't even have power with the key off, so check the PCM fuse #8. Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
If you’ve been having problems getting your car started or it has been starting slowly your battery may be getting weak.
To determine if your alternator or charging system is causing the problem measure the voltage across the battery terminals when the car is running. Certain specifications, prices and equipment data have been provided under license from Chrome Data Solutions ("Chrome Data").
I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.
We currently have the latest digital car battery tester which tests & prints out how much life is left in the battery.
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It should only have power with key on, not with key off or out.For that wiring diagram, click here. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.
I liked that I could ask additional questions and get answered in a very short turn around. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Knowing how to test a car battery could prevent you from wasting money on a new battery when you don’t need one. Most shops use a specialized battery tester that can put a large load on the battery, however these are not necessary (though they are convenient). The voltage should rise higher than it was before the engine was started, normally somewhere over 13.5V. It’s also a good idea to test car battery at the start of winter to help make sure that your battery is up to the task of starting your car on a cold morning.
A quick and easy test is to turn the headlights on for 5 minutes or so and then read the voltage across the battery terminals, which should remain above 12V. If your battery is completely discharged it’s best to use a battery charger to top it up as alternators are not meant for this task and do a poor job.

With a helper giving the car some gas to get the revs up to normal cruising speed the voltage should stay above 13.5V. The battery should read more than 10V when cranking, and shouldn’t drop to below 9V even after 10-15 seconds of cranking on a cold day.
It is not hard to do this test and when ever I get a problem like this I do a battery load test first.
Then disconnect the negative battery terminal and hook the 12-volt test or voltmeter with the positive test lead on the disconnected negative battery cable and negative test lead on negative battery post. A light on the 12-volt test light or voltage reading on the voltmeter indicates that something is draining the battery. If so start by unhooking the small wires at the alternator and see if the test light goes out or dimmer or if the voltmeter drops in voltage, hopefully to zero. If the 12-volt test light goes out or the voltmeter now reads zero or less than 0.2 volts then you have found the short.
If the voltage is not zero on voltmeter or test light does not go out, the short is somewhere else.

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Comments How to test car battery is charging battery

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  3. kama_189
    When drawing a sample from the battery, fill.