Battery Care and Maintenance Tips -EricTheCarGuy

The batteries in our vehicles are often overlooked until they don't work. With a little time, some relatively inexpensive tools, and a basic knowledge of what to look for, you can keep your battery working for a very long time. You'll also know if the battery isn't on it's way out before there is a failure. No on likes getting stranded and this is a good way to prevent that.

I hope the tips in this video are helpful and help you take care of your automotive batteries.

Thanks for watching.

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Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.

[Flashahol]

As an electronics tech I'm very well versed in batteries, but I never thought about checking for voltage differential between post/connector and post/body of the battery. This is by far the best and most complete car battery maintenance video I've seen.

[shiloh]

Mad respect for the detail level here. Dude went 5th dimension on a car battery. Wow.

[spresc]

When there is surface drain, there is a trace of sulfuric acid on top of the battery case providing a current pathway between the terminals. Dust/dirt by itself is non conductive unless wet. As abhorrent as it may seem to some, I verify the presence of sulfuric acid (unless I can actually see it) by lightly touching the case top and then taste test. Then spit it out. My tongue has not been burned nor fallen off from occassionaly doing this for well over 45 years. Yes, I know baking soda will tell you, but its not always nearby. Excellent battery care video.

[PhattyMo]

Good video. Keeping batteries clean can help prolong their life. I usually start with spraying the battery with a hose. Another tip for topping off the cells, is to use a big veterinary syringe. Keep baking soda on hand -if you spill acid, or get it on your skin, put some baking soda on there, it will neutralize the acid. (On skin, it helps to make the baking soda into a paste, with a bit of water. Apply it to your skin, wait a few seconds, and then rinse with plenty of water.)
If you get acid on your clothes, consider them a goner. There will be a hole where the acid was, after they are washed.

[mrbiggoggles]

Eric, you have saved all our asses 1000 times. Everyone appreciates what you're doing man.

[allinsiteUK]

May be worth considering an insulated cover for the positive terminal connector. As you say, in an accident a short with the body/hood could cause a spark and ignite escaping fuel. Vasaline for the posts too to prevent oxidation etc. Great video, thanks Eric.

[nathanrice]

One of the better 12V car battery videos I've seen. Showed a few techniques I'd never thought of before.

[StoneKathryn]

Thank you Eric the Car Guy! That is what my no start/no crank issue was! The negative terminal connection was loose and was not adjustable so $10 later with a new cable the car started right up. I thought it was something else since my headlights were bright but my car wouldn't crank and then not even the dash lights would come on. Put the new cable on, voila, it is a car again! Thanks so much for pointing this out. My other car ('94 Pontiac Grand Prix) that did this too, it was the bolt that threaded into the positive side of the battery that had somehow gotten stripped and I did get a new battery and a new starter before I figured out it was the bolt. I'm so glad I didn't do that all over again. Thanks again!

[pay]

I was listening to an old time radio program than included the sponsors commercials. One was an auto battery manufacturer. They were proudly touting that their batteries only needed water added 3 or 4 times a year (under typical driving).

[trucavalier]

25 years of fooling around with cars I’ve never even thought to check the case for draw. Thanks a million!

[DENicholsAutoBravado]

Great video Eric. It was a mix of why I became a subscriber in the first place and the quality of production your capable of with all your skills and experience. My inner motivation for watching these things over a year and a half ago slowly went from loving cars to wanting to be an Automotive Technician. I've been hired! Thanks to everyone's comments as well that has prepped me for this moment! :)

[shorelined]

Love these videos. I'm amazed how much of a drain a little dirt created! Good to know in dusty Az.
I used to test for good connection/hidden oxidation similarly. After getting solid read at posts, switch one probe to opposite clamp/terminal, also on wiring, looking for any fluctuation, then compare to initial voltage read. Repeat for other side. I used to use wire brushes until a few post and clamp got too worn to connect tightly. I started using a few drops of lime away for toilets(buck at $1 store). Just a quick scrub with sponge or toothbrush, wipe dry and it's nice and shiny. I put a thin film of white silicone grease on exposed metal to displace air and prevent oxidation.

[harindugamlath]

Surface drain. Never thought of that! Thanks Eric!

[ericrowland]

I've watched a few videos about battery care, but this is undoubtedly the most informative I've seen. I was beginning to give up on finding a decent instructional, but this has now changed that. Very grateful for this. Splendid job!

[spiralnapkin]

Videos like like always motivate me to get up and check things out for myself. I checked my voltage, and it was 12.12v. I checked for surface drain and got over 10v in some places. I cleaned it up with water and baking soda until i got 0 everywhere else. And when i checked voltage at the posts, 12.33v 👍. I know its not the 12.4 we want, but I feel a lot better than it being 12.12v. Thanks Eric!

[JeffHazardous]

Just a quick tip for a few people who have batteries in their trunks, like my 05 Cobalt, it is very important to reconnect the venting tube if your battery is equipped with one.

[Caelin]

Thank you for emphasizing Safety and low cost solutions. Your instructions were accurate, easy to follow and solved my issue.

[csabcsaa]

thanks a lot Eric! You just saved my battery :) had the same "dirt conducts electricity" issue, and the freshly charged battery, could not start my diesel truck the next day. After I watched Your video, I measured it, and had 6-8 volts charge leak via the dirt (and actually it wasnt that dirty, but still). Cleaned it, measured it and now it has 0.0 volt leak. Charging at the moment. hope it starts now! Cheers from hungary!

[scottsullivan]

Old vid, I know BUUUUTTT dielectric grease AKA silicone paste is used instead of 'axle grease' on the cleaned and installed connectors/posts. It does NOT restrict the flow of electricity and keep em weather free! Love you Eric (platonically of course)!!

[blkferrari]

Great video. Comprehensive, thorough and to the point. Eric, your channel is at the top of my list! Keep up the good work.