How To Test A Car Battery Using A Volt Meter
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- เผยแพร่เมื่อ 1 ต.ค. 2024
- Showing what a bad battery looks and how to know when you need a new one. Not everyone has all the tools and gadgets but if you have a simple volt meter you can easily and accurately check to see if your battery is up to par. Ive been using this method for years and its never let me down.
this guy should be one of the popular video hosts !! very informative .
Great, this is how videos should be made, Straight and to the point.
Great video!! Anything at or over 9.6 amps at start up...ya good to go. Below 9.6 replace!
My car won’t start if it goes under 10 old Mercedes need a lot to crank😅
Good job! Good video all around! Thoughtful explanations and info! Thanks much!
Picked that booster pack up at Menards. Great pack I take with for boost jobs all the time. Boost pack even works good for providing power for a LED light plugged into the 120VAC outlet for quite awhile. LED draws little to no power so go figure on that one.
Thanks for saving me umpteen more headaches trying to figure out why my truck wouldn't start!
Battery would take a full charge 12.60 and even held it over night, but no start. Hooked up the
Volt Meter like you show in your video and the voltage dropped to less than 5 when trying to start !
BINGO...you saved the day. New battery, problem solved!
Also checked out your video bypassing the starter relay which saved me pulling the starter which was
the next thing I was gonna do.
Thanks from a new subscriber.
Thank you for watching and commenting I'm glad the videos helped
I appreciate you
Hot dayum two replies over a year apart now that's not just appreciating that's cherishing your viewers! Haha
Exactly i am charging it and feeding it like a hooman. Menu 9 start the car v dropped to 9 hahahaha battery time. Had all the warnings bjt didnt know bout menu 9 hehhee… coolant is 7 and v is 9 nice
Lol
Fantastic video. Thank you, I will try this.
hey nice video so i did this with my jump box it read at 7.6 and it had an egg smell as well meaning my battery i thought it was my breath i know i didnt eat any eggs for months i loooove hard boiled egss and i didmt have any at all for a while so i did a goole search and before i can type out the full question about the egg smell it finish the question for me lol i didnt know that was a thing to watch out for leason learned glad it wasnt my breath now i have to get a new battery that egg smell was the sulphric gas leaking plus i did leave my dome lights on twice i was able to jump it off then park it but didnt drive it for the time it needed to fully charge i had no gas yes i know i was really going through it plus the temps did drop so i guess that made it worse so i had gas bought to me and we tried to jump it from another car still no go and thats when i saw that the voltage was at 7.6 so im praying it is the battery sorry for the long reply im just lookn for reassurance
thnx
stay safe
My GF left here lights on for 4 hours today, took the battery all the way down to 1.8 volts. Also found that both ground and positive cables were very loose in the new terminals she had gotten. Realized that i had to add a 4 guaghe nub of wire on each terminal so they would tighten properly (I did have both bolts on each terminal tight and cables could be easily pulled out. Clearly the new terminals are designed for much thicker guage wire than what Jeep's use in there older models, 1997). LOOONG story shortened, put a new battery in, fixed the terminals and WOOP, the Jeep starts like a champ again. Moral of the story, shut ur lights off and don't let boyfriend fix ur rig, even though I did figure out the mistake I had made.
Thanks for the help
I did an oil change and it seem to run and start easily. But after watching this I don't think I need to fool myself into thinking it's all good.
Great vid. Thank you.
excellent keep up the good work. Thanks
Useful information 👍
Would this test work on a car that wont start?
Check voltage on your battery first
Man this might have just answered my battery saver light coming on a 2013 Cadillac ATS
I have a xs d4800 agm battery it reads 12.3 with vehicle off. Is this a bad battery
It 13.5 volt ok to charge the battery thats all I'm getting
What
Great video, thanks.
Mine hits 11.9 then 14.2 upon first start up. As it’s warmed up it’s at 13.8. BUT when I turn my stereo on it drops to 13.2. Is that bad? I have a car audio system. Only 2watts. And that’s with the volume all the way down. Just turning my head unit on it drops .5
That's normal. When you first start it will charge at a higher rate then taper off and keep charging at around 13 usually.
@@m0bilemechanix thanks. I meant 2000 watt with a 2nd battery in back. I just remember on high bass notes it would drop to about 12.9 13. Now it sits at 13.2 when I just put the unit on. Bad battery’s? Or weak alternator?
Or the starter motor is knackered and pulling high power and knackering the battery
Possible but rare. You can't by just turning on the headlights. Shouldn't drop much.
Man it is normal during cranking alternator charging so it go up to 14.5
I don't think you understand what I was showing here.
@@m0bilemechanix lol
What If starter pulls more current than normal will it cause voltage to be lower in a good battery
Yes but it's rare and it's hard to know unless you have a battery stress tester. In all my years of mechanic work I've never seen a starter just draw a bunch of amps and slow crank at the fault if the starter. I've heard of it but never seen it.
Great vid
Excellent Video!!!
You are legit. Thanks.
Subscribe All Day!
Great help,
Sometimes i get confused wither its a battery or alternator or the starter motor. How to decide?
Look at his starter video to eliminate that part. This is battery and alternator. Solved.
Thx for sharing
Thx Bro Great work 👍
Battery voltage suppose to be constant 14.0 not 14.3 or higher witch means over charge
Nope! I believe you're talking about alternator output what should be anywhere between 13.5 and 14.5. Perfectly charged battery will be between 12.40 V and 12.60 V. That's your midas tip of the week.
12.40 v is just 75 per cent charged.
🖖🏾✊🏾
Like !
Someone know why my battery voltage plying 13-14 , when I’m driving
That means your alternator is working
depends on make of car or truck .. When I start my car from a cold start its 13.8 volts For a few minutes then it goes down gradually to around 13.2 V after about 40 mins.. Sometimes I can go down to 13.0 if it's been running for a couple hours. The other day while I was driving it went down drastically so I pulled over and checked my alternator wire they're starting wire for the alternator popped off I was driving the car down the street with lights on and the car only had 9 V as I was driving it... but yes my alternator is fine because I ran it for a good hour and the battery came back to life now it's staying around 12.6 with it off.. batteries about four years old and optima red top .. Great battery by the way.. Me I always carry an extra fresh battery in the trunk ..
I think very soon you will eat your words. You have an intermittent problem that has nothing to do with my video. Good luck anyway.
Youre going to need that "extra fresh Battery" very soon, it sounds like.. 🤔
@@m0bilemechanixi have a 2011 chevy Malibu my battery is 13.8 when off my alternator reads 14.8 car dies out what can be the problem please help i went to so many deals and they said its fine but its not and dies out! The alternator live has a broke clamp would the clamp be my problem? Lights go high then normal the roads are very bumpy and thats when it starts dying out? 3.8 engine any advice please
Even after i die out the battery is still in the 13 range!
Man it is normal during cranking alternator charging so it go up to 14.5
what are you babbling about?
Bookoo c babbling about your fucken ass hole
Sorry not helpful method. I like and use Dan Sullivan's method of using double leads one set to battery and 2nd set to starter cranking motor and solenoid with DVOM reading voltages of both to find if motor is getting system voltage without having to removing starter from vehicle.
This video isn't for seeing if the starter is good. It's to confirm a suspected bad battery that doesn't seem like it's holding a charge. I have another video showing how I test to see if the starter is working or has good voltage without removing the starter.
That way sounds much more difficult