How to Test Car Battery to see if Good or Bad Easy!

Car Batteries are a major part of having a safe and normal functioning vehicle. Over time your battery may begin to fail and need to be tested. This video shows you how to test a Car battery using a Multimeter to be sure it’s working properly
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[@jeffmowrey2770]

Voltage test only go so far , batteries need to be load test to ensure a good battery .

[@Flashback502]

Agree 👍🏾

[@onelove9101]

Finally I found a video that tell us to how much lower the voltage will fall at the time it is started. My battery drops down to 4 volts when I try to start it up. But shows 12.5 volts prior. Now i know for sure my battery is bad. Thank you sir for your video!

[@Flashback502]

You're welcome! Glad could help Please subscribe like and share and check out our other helpfull videos

[@THCMT]

Thank you so much! You explained everything well, and seems easy 👍

[@Flashback502]

Your welcome glad could help thanks for commenting. please subscribe like and share and check our my other helpfull videos.

[@GdBeniceBellaLiu]

Thank you so much, you explained very details, and very easy to learn. excellent video!!!

[@wallheadkdir]

That was actually helpful. Thank you for this

[@Uncle-All-Star]

Thanks for your help used your video today, was having a mental lapse thanks for the refresher.

[@Flashback502]

Your welcome glad could help please subscribe like and share and check our my other helpfull videos.

[@tomarmfield8093]

Thank you, this is exactly what I needed! Your video was well done, thorough, and educational. The part about checking the CCA is something most people skip or aren't aware of.

[@Flashback502]

Glad it was helpful! Thanks for commenting

[@dbbias1416]

Great video! Very helpful 👍💯

[@Ratlins9]

Thank you, I knew about checking the voltage on the battery, but didn’t know about checking it when starting.

[@andigold9977]

Thank you so much. A very clear and easy to understand vid..!

[@Flashback502]

Your welcome glad could help please subscribe like and share and check out our other helpfull videos.

[@daviddowns7552]

Thats pretty helpful info bro. Im.wanting to learn to work a multimeter so this is a start.

[@josemedeiros007]

Good video and demo!

[@willyheacock2907]

Thank you - helped me know the load test importance importance

[@Flashback502]

Glad it helped

[@darrylruschewski347]

Thanks,great video!

[@Flashback502]

Your very welcome Glad could help👍 thanks for comment, Please subscribe & like and share if haven't already and check out our other helpful videos

[@CrazyCanuckFitness]

Good info!

[@daeshbagcentral5298]

Thanks for that,i needed a reminder😊

[@Flashback502]

Your welcome please subscribe.

[@user-wu9tl2ff9w]

Thanks for teaching, 👍👍👍

[@Flashback502]

Your very welcome Glad could help👍 thanks for comment, Please subscribe & like and share if haven't already and check out our other helpful videos

[@jeffreyvasby3230]

Thanks for the refresher course 🙏👍

[@Flashback502]

You're welcome! Glad could help Please subscribe like and share and check out our other helpfull videos

[@anasmoustafa7286]

Very cool video .. thanks man

[@Flashback502]

Your welcome

[@olhemi1]

Great video

[@BoldsCoolChannel]

Thanks! My 12v aux battery shows 10.82v when car is off. After car is on it is 14.70. I am observing P lock error on this car. Not sure if it is because of this.

[@dennyclawson4889]

Thank you 🙏

[@marks7791]

Thank you, I never knew it was this easy!! Great Job!!

[@Flashback502]

Your welcome glad could help please subscribe like and share and check out our other helpfull videos.

[@louiskelemen8867]

THANKS...but why do you have to place the negative probe first.

[@daveblevins3322]

Useful video sir 👍 Thanks 🙏

[@Flashback502]

You're welcome! Glad could help Please subscribe like and share and check out our other helpfull videos

[@brandibills2157]

Good video… thank you very much

[@Flashback502]

Your welcome

[@dinorizo5385]

thanks for the video

[@Flashback502]

You're welcome. Please subscribe like and share and check out our other helpfull videos.

[@PsyCodeqz]

What does it mean if it goes above 14 V the first time I start the engine, and then when I restart the engine, I get a voltage that starts at 12 V, and it gets lower to 10.9 V very quickly, eventually dying on me? Same result before and after I cleaned the alternator with a 4 hour degreaser bath and brush to get all the oil out of it. I checked all the connections as well as cleaning all the connections with Electronic cleaner spray. If I wait about 15 hours, the voltage again starts at 14 V, but when I stop the engine and restart , I again get the battery dash light again and it does the same thing all over again.

[@16B9]

Thank you! You saved me a trip to the Toyota Stealer.

[@Flashback502]

You're welcome! Glad could help Please subscribe like and share and check out our other helpfull videos

[@mincinoiu]

Proper testing, thanks!

[@Sainax1776]

Very helpful. I didn't know which number on the knob to switch to

[@Flashback502]

Glad it helped

[@checkyourselfbeforeyoudeck946]

Thank you big dawg.

[@Flashback502]

You're welcome! Glad could help Please subscribe like and share and check out our other helpfull videos

[@lofty360]

Thank you!!

[@Flashback502]

You're welcome!

[@altec19]

So while cranking as long as it’s above 10 V it’s OK ?

[@avflyguy]

You would really either another person to watch voltage drop to 10v or below (usually won't start if

[@cherylmaves]

Very helpful, thank you!

[@Flashback502]

Glad could help Please subscribe like and share 🙏.

[@generalgrafx]

When measuring a battery with a multimeter, there is no need to first touch the black terminal. I guess you got it confused with when you’re installing the battery.

[@W-733_KWX]

An instrument we use in car industry is Midtronics to test batteries.

[@olial8342]

great info. Thanks for showing the process step by step. Just wondering why you used the red lead on the ground/negative lead and black lead on the battery. Am I mistaken? I have the exact issues you were describing with my car. Thanks again! this helped immensely.

[@danlawrence7924]

On top of testing with your bolt meter your battery needs to be load tested, that's the truth, that's the only way to tell if your battery is actually good or if it's insufficient

[@shannoncorbett634]

Thanks!

[@Flashback502]

Thank you very much for your support of our channel, glad could help.. Hope we are able to help you in the future as well.

[@glenthomasrealtor6223]

Great video, very helpful. Why do you put the meter on 20v to start?

[@Flashback502]

To be higher then full battery voltage, thank you

[@Dragnet2]

Why the negative first?

[@steveperry1344]

a good dynamic test with a load.

[@eugenepohjola258]

Howdy. Nice. One may consider fabricating a cigarette lighter adapter for the multimeter. It should be possible to do these measurements sitting in the cabin. For the no load check. Only turn ignition to accessories. No further. Regards.

[@Flashback502]

Good ideal

[@Cmac24ish]

So what if the battery voltage test was reading 12.26?

[@commercializedhip-hopisdea1019]

My car wouldn't start for a while but then I got a jump and it started. Then the next day it wouldn't start. So I unplugged the battery clamps for about a week. Then I connected the clamps back on and my car almost started but couldn't turn over. So my question is, would that be a bad battery or a bad alternator? Thanks!

[@Flashback502]

Check battery cable and terminal for corrosion can cause your problem. please subscribe like and share and check our my other helpfull videos.

[@len9518]

No problem if you reverse the leads. It would simply read negative, shuch as -12.9 volts.

[@handballfield6326]

FFS whats that sound when engine is started?

[@thelittleredbarn174]

If you're buying a used battery from someone is there a way to test it without it being in the car without a load tester?

[@Flashback502]

Can take 2 a auto zone will test for free. please subscribe like and share and check our my other helpfull videos.

[@lazarusramaube8291]

The Voltage looks good but the Battery may be having dead cells which will affect cranking.You need need to do an Amperage test with the Meter inline with the Battery and the Load.

[@032170000]

Thanks

[@STILLNIGHTPEARL]

The battery on my 2018 accord just tested at 11.5 volts with no load and 8 volts with load, that’s obviously bad, it was made on 5/18, so four years is pretty good.

[@blainemcdonald6972]

Is it ok to load test a battery while it’s still connected to the vehicle

[@Flashback502]

Yes

[@alfamontydog]

An inexpensive load tester works the best.

[@romantheman1227]

Wow..Battery is OK..but what's the scraping sound that engine is generating??🤔

[@TheMgd2929]

Can I use a voltage meter on a battery all the time never take it off....or will that drain the battery

[@Flashback502]

Will drain overtime

[@mobilemoke-ne2gr]

Yep I used‘d my mul Ti meter an dough it drop down it good! I tes it it 😂

[@yunhechu6061]

Not accuracy to test crank due to the multimeter too slow response.

[@Joshuaellis420]

Ok but why do you put the negative on fist in everything I do the opposite

[@mrcabobill1]

First you should be putting the probes on the lead also the battery needs to be fully charged and load test half of the CCA so if you have a 500 cca battery you need to pull 250 amp draw and you need lead adapters for a side terminal battery so you get lead to lead contact .

[@electricman523]

It's amps that start the car, not volts. you can have 12 volts, but not enough amps.

[@markcodysr]

Sounds like you might be from St. Louis my friend.

[@Flashback502]

Lol thanks for comment

[@davidlang4442]

Makes not a bit of difference as to which one to hook up first. Plus or negative. It's just current flow through your meter. It cares not a bit .

[@carlpyrtle973]

I have them show 12.6 volts and not have no cranking amps Would not even spark

[@carlpyrtle973]

I have had batteries to show 12.8 volts and have no cranking amps so the car would not crank so a load test is the real way to know Batteries can fool you

[@riceburner4747]

Why negative, THEN positive? U get less spark hooking ñegative last.

[@mattwaters6987]

Always thought positive first then negative when testing 12v batteries. Reduces possible spark. Just saying...🤔

[@Fred_the_Head]

Persons need to test the battery under load to determine if the battery is healthy.

[@kevintan1028]

Voltage test alone is not enough

[@keithcitizen4855]

I guess my battery is dead I can charge it to 12.56 volts with car running for 20 minutes but looses 1/2 a volt with the head lights on for a minute funny how its got enough power to start engine next day at 12 volts though - common sense prevails EG the battery is 6 years old , slightly bulged out one end and the green indicator is non existant so $273 AUD for caa 620 replacement it is.

[@charliebeck1448]

Voltage doesn’t mean alot the battery needs to be tested with a load tester u still might have 12 volts or 14 if viechle is started but u need to add a load on the battery tester. u didn’t test the battery u tested the alternator get a load tester only about 50 bucks

[@walterkersting9922]

Walmart used to be a place that I depended upon for batteries; I would volunteer to go from the store to store firing everybody in the automotive section just before Christmas and I would do it for a slap of gum.

[@Flashback502]

Lol👍🏾👍🏾

[@neilasd3043]

If your car starts battery is OK if it don't it ain't.

[@robertbeeston5244]

Engine sounds like shit

[@unclesam7064]

That's a noisy ass car for someone giving out engine tips

[@Flashback502]

Lol, Please subscribe & like and share if haven't already and check out our other helpful videos