What Does Battery Acid Taste Like

Published on: June 4, 2022
Written by Liam Jaxon / Fact-checked by David Rowan

According to common sense, a battery should never be tested by your tongue. Those who ignore the wise advice of their parents and taste the battery know-how bitter it is tastes like. Others who have not tasted it yet might be curious to know what does battery acid tastes like.

Battery acid has a pH of 1.0, which is ten times more acidic than either vinegar or lemon juice. Yet it lacks any fruity flavour. Prickly sensations are caused by astringency. After tasting it rinsing your mouth several times with water, you still have to wait a long time for the bitterness to fade.

what does battery acid taste like

Different metals used in the poles of C Cell Batteries and AA Batteries produce a distinct taste. A moderate electric current may produce a wide range of tastes, including sweet, bitter, savoury, and even a burning feeling. In this post, we quickly addressed what would battery acid taste like? Whether or not tasting it is harmful to your health, and the various adverse effects of doing so.

What is Battery Acid?

Even though it’s commonly associated with lead-acid batteries, battery acid is actually a general term for any acid-based battery or chemically modified cell that functions. A battery’s primary function is to store chemical energy for use in the future, regardless of the type of acid used.

Battery acid also plays a vital role in how this electrochemical process works, which is mainly owing to the unique structure and chemistry of gadgets.

What Kind Of Acid Is In A Battery?

In a lead-acid battery, the electrolyte is contained beneath flat lead plates. In the electrolyte, sulfuric acid and water are the main ingredients. Quantity and size of electrolyte in a lead-acid battery govern its capacity to store charge and how many hours it can be used.

What Is Battery Acid Formulated of?

Battery acid is sulphuric acid (H2SO) diluted in purified water to a concentration of 30-50 percent and is commonly used in rechargeable lead-acid batteries, such as group 94R batteries found in cars and other motor vehicles. It is important to note that battery acid has an acidic pH of 0.08, and it’s for this reason it must be treated with extreme care.

Lead-acid batteries are made up of two plates of conductive lead, known as electrodes, which are filled with a viscous gel. The electrolyte is the sulfuric acid solution found in the space between the plates. Lead-acid batteries also feature a separator, which acts as an insulator by preventing the two plates from coming into direct contact, leading to a short circuit.

Causes of Battery Acid Taste Like Sour

So, what does battery acid actually taste like? We already know that the battery has a lemonade taste. When the circuit closes, electrons flow from one lead to the other, forming a current. They can also interact with water molecules and rip them apart via electrolysis. One lead current creates hydrogen gas and hydroxide ions in your saliva.

The current exiting your saliva creates oxygen gas and leaves hydrogen ions behind. Sour taste receptors detect these hydrogen ions in your taste buds and acidic meals. Your tongue is less sensitive to hydroxide ions because they have a bitter or soapy flavour. 

Electric currents aren’t all sweet or sour, though. A 9v battery provides a tart flavour, but smaller shocks might be sweet, spicy, bitter, or even savoury. Because other taste receptors can be activated by current and temperature, a phenomenon termed electric tasting. Don’t be fooled by tasting flavours by varying the current strength, the temperature of the leads supplying it, and the intensity of minor shocks.

The same taste receptors are stimulated more strongly, while different taste receptors, like sweet and sour, might balance each other out. Bitter and sweet flavours seem to be more difficult to master for unknown reasons. But now you know the sour battery taste is merely a quick, sharp shock. So those who are thinking, Is battery acid safe to drink? My skepticism about the acidic flavour has been allayed now, I guess!

What Is the Purpose of Acid in Batteries?

A battery’s electrochemical process would not be possible without acid, which is why they include it. Positive and negative electrodes are connected via an electrolyte known as battery acid.

On the other hand, Batteries do not necessitate a dilute sulphuric acid solution as an electrolyte to aid the process. Batteries’ electrolytes can be solvents containing dissolved acids or alkalis, and standard AA or AAA or D batteries even use solid electrolytes instead of liquids.

How Does Battery Acid Work?

Battery acid aids in the conversion of chemical energy into electrical energy by acting as a catalyst. A typical battery has three main parts:

  • The anode is the negative electrode that delivers electrons to the external circuit. Sponge lead is the most typical material used to build it.
  • Electrodes that accept electrons from the external circuit are called cathodes. It’s usually made of lead dioxide.
  • Ionic conduction occurs in an electrolyte, and it’s commonly a liquid solvent solution with dissolved salts in it.

In order to maintain a constant current between anode and cathode, the battery acid aids the electrochemical reaction. When discharged or powered, a battery’s electrolyte becomes less concentrated and more like HzO. As a result, sulphates coat the anode and cathode lead plates, reducing the area where electrochemical reactions can occur. While constantly emitting ions, this surface area will gradually shrink as its ions are used up.

What Happens if You Eat Battery Acid?

Sometimes you mightn’t know what happens if you accidentally taste battery acid? So it’s wise to know the after-effects. Increasingly, doctors are being called upon to cope with this situation. In an effort to reduce the danger, battery manufacturers include a warning on their packaging and provide details on their websites.

Remain cool if you eat battery acid accidentally. Stop eating and drinking, and get to the nearest hospital’s emergency room as soon as possible. If you still have the battery’s packing or the device it came in, bring it with you to the doctor’s appointment. Remember to let the doctor know what kind of battery you’re using.

Gastroscopy can be used to diagnose it to the stomach, and the doctor can be confident that it will proceed normally through the digestive system. It’s a good idea to know what happens if you get battery acid in your mouth and suddenly have stomach pain or nausea (or other noticeable symptoms). If the battery acid splashes only on the skin, it will have minor issues, but still, it’s wise to know what happens if you get battery acid on your skin.


1. What Will Happen if You Put a Battery in Your Mouth?

Electrons flow from one end of the battery lead to the other when you place your tongue on it, resulting in an electric current as the saliva flows. Electrolysis is when electrons contact water molecules and break them down.

2. Why Am I Getting a Taste of Battery Acid?

These include ear and upper respiratory infections, such as sinusitis, head injuries and other diseases that affect the central nervous system (CNS). If you’ve ever had radiation therapy for your head or neck, you’re at risk of developing a metallic taste in your mouth.

3. What Will Happen if You Put a 9 Volt Battery on Your Tongue?

Putting a 9v Battery terminal on any portion of your skin or muscle tissue will not cause a shock, but putting them on your tongue will cause a tingle.

4. What Happens if You Drink Battery Acid?

Massive mouth, throat, eye, and lung damage is conceivable if the battery acid enters the lungs, and it can cause instant and long-term damage.

5. Why Do Batteries Have a Sour Taste?

Batteries have a sour taste because the hydroxide ions generated from electrolysis activate the sour receptors in the mouth.

Final Verdict

Sulfuric acid is diluted with water in the battery electrolyte. After reading the whole article, I hope you got an idea of what does battery acid tastes like. However, not all battery electrolytes are sour or taste like sourness! Some might taste sweet, spicy, bitter, or even savoury at their most extreme moments. 

Remember, depending on where battery acid gets into contact with your body, it might cause harm or be an irritating agent. No matter how much you ingest, the only way it can kill you is by drowning you or by attacking your inside soft tissues, neither of which are likely scenarios.

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About This Writer

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Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

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