Alternative Energy
How To Revive Car Batteries: Don’t Throw Dead Batteries Just Yet
Revive car batteries using these dead car battery tricks and guide so you can get yourself a skill you can use for life!
RELATED: Welding with Car Batteries
Two Steps to Revive Car Batteries
Uses for Dead Batteries and Sealed Lead Acid Batteries
Many “dead” car batteries are actually perfectly good batteries. They just can no longer provide the hundreds of amps needed to start a car.
Many “dead” sealed lead acid batteries are actually un-dead batteries that can no longer reliably provide a couple of hundred watts of power needed to keep a computer running in a power outage.
Ensure You and Your Family Are Never Caught In The Dark Again!
A couple of years ago, I decided to add another small solar panel to the collection I have on my roof. I have a 5- and 10-watt.
This new one is a 20-watt — dedicated to providing emergency power for lighting, a small fan, and other miscellaneous small low voltage devices.
For this setup, I needed a battery since it would need to be able to provide power 24 hours a day. I decided an un-dead car battery would be perfect since the largest load it would need to power for an extended period of time would be less than one half an amp.
There is quite a difference between 200–600 amps and a half an amp. The battery pictured was one I replaced when it would no longer start my car.
RELATED: Bring Dead Ni-Cad Batteries Back to Life | Prepper Skills
Step 1: Charging the Battery
I could have used a linear regulator to charge the battery with the solar panel. The cost of a linear regulator is typically less than a dollar.
Linear Regulator Definition: This is an electronic system used to keep the voltage stable. Learn more about it here.
I decided to go with a charge controller instead because they more efficiently use the available power to charge the battery. You get more run time at night when you use a charge controller.
Step 2: The Test Fan
I did some extensive testing to make sure I knew how well the system would work in an extended power outage. I ran the fan for several weeks, 24 hours a day a couple of summers ago.
The system worked fine. Since then I have been running LED lighting out on the patio 24 hours a day for about two years.
The fan pictured is a 10” 12 volt, 5 watts, a 2-speed fan that was on clearance at Walmart. They still sell them, but it was the end of the season. I have three or four of them.
The LED board has 16 led lights. The battery is not even hardly trying to power this tiny 1-watt load.
Want to see the full article
How To Revive Car Batteries: Don't Throw Dead Batteries Just Yet
Watch this video from Ratchets and Wrenches to see if it's possible to revive car batteries with Epsom salt:
To a survivalist, most things have some form of survival uses from soda cans to dead batteries. So just keep old car batteries in your stash and learn how to revive a dead car battery.
You only need to take these tips to revive car batteries and get something out of them once more!
Do you think you can revive car batteries in your garage now? Share your thoughts with us in the comments section below!
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Editor’s Note: This post was originally published on February 18, 2016, and has been updated for quality and relevancy.
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Peter D.
September 14, 2018 at 1:56 PM
Title of article is “How to revive dead batteries. But article has no information about reviving dead batteries.
Seamus Toner
February 5, 2019 at 8:44 AM
Thank you and all others who pre warned us ,I’m sick to death labouring through long winded articles saying shit all about what they advertise .
Lucy
October 5, 2019 at 9:27 PM
Peter D.
The video tells you how.
Pingback: How To Revive Car Batteries: Don’t Throw Dead Batteries Just Yet | Life Off The Grid
Pingback: How To Revive Car Batteries: Don’t Throw Dead Batteries Just Yet
Anonymous
February 5, 2019 at 7:28 AM
Think using false statements to get people to open , there’s nothing about reviving car battery.
Genius
August 2, 2019 at 6:37 PM
It’s a video, watch it. Another thing you can do if you have a 12 volt solar panel (20 watts or more) Is connect it straight to the battery. This is like equalizing the battery. Depending on the size of the battery/solar panel use your judgement as to how long to leave it connected. For a completely dead battery I would try 3 hours and then check it. If you leave it too long you will ruin the battery anyway. I would do this and then do what the video shows, it will help get the sulphation off the plates better.
margie
February 5, 2019 at 7:46 AM
i didnt see (HOW TO DO IT)
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Anonymous
July 16, 2019 at 6:23 AM
another scam wanting you to pay for the info on charging dead batteries
Genius
August 2, 2019 at 6:39 PM
It doesn’t say pay! Did you even watch it?
Daniel
July 16, 2019 at 9:22 AM
But the video enclosed in the article does give How-to-do information about reviving a dead battery.