How To Revive A Dead Car Battery?

by Phil Borges // in Car

No one likes to be stranded while driving with a dead vehicle's battery. It is frustrating, inconvenient, and can feel like a huge waste of time when all you want is to get back home. It's one of those days that you asked yourself the reasons why you didn't have a backup car battery or even learned some methods to fix a car problem.

The car owner had to deal with a dead battery or a flat battery at one point or another. It is not something that most people want to have happened, but there are things that cannot be avoided all the time. 

But do not worry at all if you don't have any knowledge of how to fix a flat battery. There are plenty of ways available to get your battery going again so that you are not stuck in this unfortunate situation any longer.

This article will give you quick tips on how to fix a dead car battery. You will also find the answer to the question if you can restore a dead car battery. The 7 steps to reviving dead batteries will be outlined here for your guidance.

How to revive a car battery?

Your car is your most important partner on the road. It will always have your back, even during the most challenging times. However, like any relationship, this one takes work to maintain a healthy balance.

Also, having an old car battery can be a real pain to some auto owners. It could lead to a car battery dying and dropping you in a real frustrating situation.

To avoid unwanted situations in the future, you can do a few things to revive a dead battery.

If unclear about what to do or recover your car's battery, always consult a professional before you try anything.

The Hand Cranking Method

The hand-cranking method is the best way to get your dead vehicle battery running again. This will require the rear wheel jacked up with the support of jack stands. Make sure to chock the front wheels. Place a block in front of one wheel and turn it so that both tires are blocked from moving forward or backward. With the ignition turned on, put your car into fifth gear while wrapping a rope around the drive tyre's tire for spinning purposes. Pull hard until you have successfully started up the engine.

The Epsom Salt Solution

One of the seven ways to restore a flat car battery is the Epsom salt solution. Epsom salt can be used as an electrolyte solution that will help revive dead car batteries.

It has a stronger acid that contains various hydrates and might help tip the chemical balance to deliver enough charge to the flat car battery.

To prepare this solution, you will need to create a mixture of Epsom salt and distilled water. The key is that the ratio should be one teaspoon per gallon of water.

If your car battery terminals are corroded or dirty, make sure to clean them before making this electrolyte solution. Use a wire brush for brushing away any corrosion material on the terminal posts.

Once the solution is made, pour it into your battery to cover all of the terminal posts and wait about 30 minutes before replacing any cables or connectors back onto the vehicle's battery terminals.

Aspirin Solution

Reviving a dead car battery with the use of aspirin is another option. The Aspirin solution is a possible solution or a fix method that is worth trying if you have some on hand. You can dissolve two aspirins in one quart of water and then pour it into your battery to help break down the sulfate crystals present, which might contribute to your dead car battery.

Hot Ash Method

This is the last resort to use when there is no other options left. You need to start a fire and let it burn down to just ashes. Disconnect vent caps from the top of the battery, then remove the battery from the car. Place the battery at the center of the ashes carefully and leave it to warm up the battery. If there are any tiny sparks even after that amount of time, cover them with sand until they stop sparking completely.

Distilled Water

Another way to fix a dead battery or revive a flat battery is with the use of a distilled water. This is a simple car battery fix that serves as an electrolyte booster to most cars. If Epsom salt or aspirin is not available, try adding distilled water to your battery, allowing for more reaction and easier starting.

18-Volt Drill Method

Can you use an 18v drill to fix flat batteries? The 18-volt drill battery method is a jump-start technique that uses an already charged power source to provide the necessary juice needed for your dead car. To do this, you need an 18-volt power tool and some jumper cables or adaptor clamps to create the connection to your dead car battery. This will allow the charge from one of these batteries to connect with another in order for them both to have enough juice to run again.

Chainsaw Method

The chainsaw method is a good option for charging the battery by using a chainsaw to drive the alternator. This is done by removing the chainsaw blade, chain, and drive sprocket to make things easier to fit over like a pulley type. After you remove the drive belts from your alternator, use it to connect your chainsaw's drive spindle and the alternator pulley. Make sure that the belts are attached securely before turning the power on of the chainsaw. Keep pressure on the belt while it charges the dead battery. Be very careful when doing this process as an accident (which we don't want to happen) is always a possibility.

How Much Epsom Salt Per Gallon For Battery

As a general guideline, you can use about 1/2 cup of Epsom salt per gallon of water. So if your battery is severely sulfated, you might want to increase that amount. And always be sure to test the solution on a small, inconspicuous area first to make sure it doesn't damage the battery.

Tips To Prevent Car Battery Issues

The best thing you can do to prevent battery issues is to make sure your vehicle's alternator and belt are in good condition.

Always check your battery's fluid levels. If your battery is not holding a charge, it might be because the electrolyte inside it gets depleted and needs to be replaced with distilled water (see above).

If your vehicle is having trouble starting up, try turning off all electrical equipment like headlights or stereo temporarily while starting the engine. This will help to ensure that the car battery has enough juice available.

Never leave your vehicle's engine running while it is not being driven, and turn off all electrical equipment, especially headlights, when you are parked overnight. This will prevent draining of the car's battery power due to parasitic loads on these accessories.

If possible, do the regular maintenance of your battery to help it last longer and retain its performance.

A functioning charging system is crucial for a properly functioning battery system. If you suspect that your charging system has become faulty, have it checked by an automotive professional or mechanic as soon as possible.

Do not let your car sit idle if you are having trouble starting up because this might lead to a drained battery that won't start at all, resulting in an expensive tow and repair bill.

If there is an issue starting up your car, make sure to take it in for a checkup immediately because the battery might be draining too quickly due to an electrical problem not being detected or properly addressed by any of those mentioned tips.

It is best to be prepared with jumper cables and other tools that might be needed in case of emergency or the event of a dead battery. If you are traveling to a remote area or a new place, it is best to have some in the car just in case.

What to do with dead car battery?

If you have a dead car battery, your best bet is to take it to a mechanic. They will be able to test the battery and find out what's wrong with it. Sometimes all you need is a new battery, but other times there's something wrong with the charging system or another part of the car that's causing the battery to die. Mechanics can fix these problems for you, so it's usually worth taking your car in for a check-up if you're having trouble starting it.

Can you revive a dead car battery?

There are a few things you can do to try to revive a dead car battery. First, check the connections and make sure they're clean and tight. If they are, then try jump-starting the car battery using another car battery. If that doesn't work, you may need to replace the battery.

How to revive a car battery that won't charge?

If your car battery won't charge, the first thing you'll want to do is check the connections. Make sure the cables are securely attached to both the battery and the charger. If they're not, that could be the problem.

If the connections are good, then you may need to clean them. Sometimes corrosion can build up on the terminals and prevent electricity from flowing properly. You can clean them with a wire brush or some other type of cleaner made specifically for batteries.

If cleaning the terminals doesn't work, then it's possible that your battery is simply too old and needs to be replaced. Batteries only last for so long, and if yours is more than a few years old it may not be able to hold a charge anymore.


Dead batteries are not fun and can be expensive if you do not take preventative measures. Hopefully, your battery will never die again with these tips, or you will be able to revive it somehow. If you ever need assistance with your dead battery, get in touch with a local expert who will be able to run some diagnoses.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.