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Lecken Lithiumbatterien? Wie man etwas vorbeugt?

Do lithium batteries leak? How to prevent something?

, by Sally Zhuang, 11 min reading time

In the world of portable electronic devices, lithium batteries are becoming increasingly popular due to their high energy density and long lifespan. However, one concern that often arises among users: Do lithium batteries leak? The truth is: yes, they can.

In this article, we address the possibility of lithium battery leakage and provide you with important information on how to prevent such incidents.

Can lithium batteries leak?

With lithium-ion batteries there is a very small chance of a spill, but as with any battery there is a small risk. It is important to minimize this risk by taking precautions.

It is important to ensure that the voltage supplied by the battery is suitable for your device. that your device can handle the voltage provided.

One advantage of lithium batteries is their ability to maintain performance for extended periods of time. Even if the batteries of your devices are left plugged in for a long time, they will function without any negative effects. This is not the case with alkaline batteries as they release gas under high pressure and humidity.

As long as you take appropriate measures to prevent leakage, lithium batteries are safe to use.

The combination of portability and reliability has led to the rapid adoption of lithium batteries. Under normal conditions they are leak-proof. It is recommended to store it with a charge level between 50% and 70% and in a dry and cool place.

In what situation do the lithium batteries leak?

Lithium-ion batteries have a minimal risk of leakage compared to other battery types. However, in rare cases, lithium batteries can leak if they are physically damaged or exposed to extreme temperatures. If the battery case is punctured, the chemicals inside the battery may leak out, potentially causing damage. Below are some details.

  1. Overload

Lithium batteries can leak if overcharged as the electrolyte inside decomposes and releases gases. This can cause the battery to expand and, in extreme cases, cause the battery to burst. To prevent this, modern lithium batteries, such as Power Queen LiFePO4 lithium batteries, are equipped with overcharge protection circuits BMS (Battery Management System). These circuits help regulate charging and minimize the risk of overcharging and resulting leakage.

  1. Damage

Lithium-ion batteries can also leak if they are physically damaged, such as being dropped or punctured. When a battery is damaged, the electrolyte can leak and react with other components, causing leakage. To address this issue, reputable lithium battery manufacturers often conduct rigorous drop tests to evaluate the durability and resistance of their products to damage. By ensuring you get batteries from reliable sources like Power Queen, you will reduce the chances of leakage due to damage.

  1. Defects in production

Although rare, leaking batteries can be due to manufacturing defects, particularly defects in the battery's seals. If the seals are poorly constructed, electrolytes can escape and thus lead to leaks. To mitigate this risk, it is important to source new batteries from trusted stores and reputable lithium cell battery manufacturers.

  1. Temperature

Lithium batteries may leak if exposed to excessively high temperatures outside of their safe range. The increased temperature can damage the electrolyte and cause it to leak from the battery. To prevent this type of leak, it is important to store lithium batteries in a cool and dry environment, following the manufacturer's instructions. By keeping batteries within the recommended temperature range, you can help prevent leakage due to temperature-related damage.

Temperature of LiFePO4 lithium battery.

Charging temperature:

0℃ to 50℃ / 32℉ to 122℉

Discharge temperature:

-20℃ to 60℃ / -4℉ to 140℉

Storage temperature:

-10℃ to 50℃ / 14℉ to 122℉


Immediate treatment if a lithium battery leaks

Inspect the battery case for visible damage such as dents or punctures that could cause leaks. Be careful of improper battery installation or welding slag in the battery box.

Remove the cover plate and check the safety valve for signs of acid leaks. Make sure the valve is open and observe whether electrolyte flows into the battery.

If the previous steps seem normal, test the seal by pressurizing it and submerging it in water. Look for air bubbles as these indicate a faulty seal. If there are no bubbles, the seal is probably intact.

During charging, check whether electrolyte is present. If it is detected, remove it carefully.

Once the cause of the leak is identified, carefully clean the affected area with a knife. Then apply a strong battery-grade adhesive to seal the leak.

Remember that battery quality is directly related to leakage incidents. When purchasing batteries, prioritize authentic and high-quality options from trusted suppliers.

How to prevent a lithium battery from leaking

Here are a few additional tips to prevent lithium battery leakage:

  1. Do not expose batteries to extreme temperatures

Extreme temperatures can cause lithium batteries to leak or deteriorate. Avoid storing or using batteries in excessively hot or cold environments as this can damage the electrolyte in the battery.

  1. Avoid using damaged batteries

Using damaged batteries increases the risk of leakage. If you notice any swelling, leakage, or unusual behavior from your lithium battery, stop using it immediately and dispose of it safely.

  1. Use reputable brands and sources

Choose high-quality lithium batteries from well-known manufacturers and trusted sources. Cheap or counterfeit batteries may have lower quality standards and are more likely to leak or fail.

  1. Use battery cases or holders

The use of battery cases or holders can provide additional protection and prevent physical damage to the batteries. This protective accessory can minimize the risk of leakage caused by accidental drops or impacts.

  1. Dispose of old or damaged batteries properly

When it's time to replace your lithium batteries, be sure to dispose of them properly. Many retailers and recycling centers accept used batteries and thus ensure that they are disposed of in an environmentally friendly manner.

By following these additional tips, you can further reduce the risk of lithium battery leakage and ensure their safe and optimal use.

How to check if a lithium battery is leaking?

To determine if a lithium battery is leaking, you can use the following methods:

Visual inspection:

Inspect the battery carefully for any visible signs of leakage. Look for discolored or swollen areas, corrosion, or a sticky substance around the battery as these could be signs of a leak.

Smell detection:

A leaking lithium battery may emit a distinct chemical odor. If you notice strange or strong smells coming from the battery, this could be an indication of a leak.

Performance issues:

If the battery does not provide the expected performance or the device powered by the battery malfunctions, there may be a leakage problem.

If you notice any of these signs, it is important to be careful with the battery. Wear protective gloves and dispose of properly according to local hazardous waste regulations.

What to do if the lithium battery is accidentally damaged?

If you accidentally damage a lithium-ion battery, it is important to take immediate action and handle the situation carefully. Here are the steps you should follow:

Identify the battery

Determine what type of lithium-ion battery it is and what chemicals it contains. This information will help you assess the potential risks and determine the correct course of action.

Evacuate if necessary

If you have punctured a highly flammable soft pack or a prismatic lithium-ion battery, evacuate the area immediately and contact the fire department for assistance. Safety should be the top priority in such situations.

Watch out for fire

Wait at least 24 hours to determine whether a fire occurs after piercing the battery. If there are no signs of fire or a small fire has been brought under control, it may be safe to disconnect the battery from the electrical system.

Disconnect the battery

If you determine it is safe to do so, quickly disconnect the damaged lithium-ion battery from the electrical system. This helps prevent further electronic or thermal damage.

Keep the battery safe

Place the punctured cylindrical battery in a safe place away from flammable materials. Make sure it is stored in a location where possible fire can be easily contained.

Seek professional help

If you are unsure of the correct steps, we recommend that you contact your local fire or rescue service for advice and assistance.

Observe the disposal regulations

Pierced or damaged lithium-ion batteries should be disposed of in accordance with all applicable local, state and federal regulations. This ensures proper handling and prevents potential harm to the environment.

What is the least likely thing for a lithium battery to leak?

Among the leading lithium-ion battery chemistries, lithium iron phosphate technologies (LiFePO4 or LFP) have demonstrated increased intrinsic resistance to leakage problems compared to alternatives such as lithium cobalt oxide or lithium nickel manganese cobalt oxide. A stable phosphate cathode and an inert electrolyte system contribute to reduced chemical reactivity that may otherwise result in unwanted releases.

Although much safer overall, no battery technology can be completely flawless or immune to all types of failure. However, LFP batteries are far less susceptible to thermal runaway due to the delayed oxidation properties of their chemistry. This reduced risk of uncontrolled overheating reduces a major cause of chemical breakage and leakage in less stable lithium-ion cells.

Additional benefits such as extended temperature operating ranges and longer lifespan further reduce the likelihood of leaks. By minimizing stress on confinement mechanisms, LFP batteries can better protect trapped electrolytes from environmental influences over broader usage profiles than many competitors.

Of course, careful handling is always important. However, the inherent properties of LFP technologies provide an excellent foundation for improved protection against unwanted emissions throughout the battery life. For applications that require the highest level of safety, their phosphate compositions are a compelling option.

Is leaking a LiFePO4 lithium battery toxic?

No, LiFePO4 lithium batteries (lithium iron phosphate) do not contain any toxic substances that would leak if the battery were damaged. In contrast to other lithium battery chemistries, LiFePO4 batteries are considered to be significantly safer and more stable. You have a lower risk of leaks or thermal runaway. LiFePO4 batteries are made of non-toxic materials and are therefore environmentally friendly and safe to use.

Power Queen: Your reliable and trustworthy friend

Power Queen, a leading player in the lithium industry, has achieved global recognition for its exceptional lithium iron phosphate (LiFePO4) battery systems. These state-of-the-art batteries are not only affordable, but also have an impressive capacity for over 4.000 deep discharges per unit. With a typical lifespan of over 10 years, these LiFePO4 batteries provide long-lasting performance that exceeds industry standards.

Learn more reviews about Power Queen.


Leakage is a problem that can potentially affect any battery. However, lithium iron phosphate (LiFePO4) batteries have inherent design advantages that significantly reduce risk. By following responsible usage practices and adhering to the guidelines of reputable manufacturers, users can rely on LiFePO4 power solutions with confidence for their safety and reliability.

Despite the durability of LiFePO4 batteries, it is important to note that they still require proper care and handling. Although this chemistry minimizes the likelihood of leaks, it is always advisable to exercise caution and follow best practices to ensure maximum uptime and safety.

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