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
To Support Flashback502, please send donations to:
Or
Fan Mail, Products & Donations:
Flashback502
Po Box 20201
Louisville, KY 40250

[jeffmowrey]

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

[oneloveyessah]

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!

[tomarmfield]

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.

[Ratlins]

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

[avflyguy]

You would really either another person to watch voltage drop to 10v or below (usually won't start if <10V), or put alligator clips on the end and point face of meter on the winshield so one person in driver seat can see how low voltage goes. Again, anything < 10v it usually will not start. Either put on a charger, jump box or cables or go fetch a new battery.

[eugenepohjola]

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.

[B]

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

[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.

[babelonchabalala]

Good video about the right way to test.... But red first first, even when connecting the battery terminals red goes first and when removing then remove black first.... Current runs from positive to negative, not the other way around

[W-_KWX]

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

[danlawrence]

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

[len]

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

[THCMT]

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

[louiskelemen]

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

[Uncle-All-Star]

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

[olial]

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.

[GdBeniceBellaLiu]

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

[lazarusramaube]

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.

[paulsingh]

Thankyou !, been having issues, now I know bro!👍🏾

[willyheacock]

Thank you - helped me know the load test importance importance