jumpstart a dead lithium ion battery

Jumpstart Your Dead Lithium-ion Battery in Minutes with These Tips

So you’ve found yourself with a dead lithium-ion battery, wondering how to bring it back to life. In this article, we’ll guide you through jumpstarting a dead lithium-ion battery and offer some tips to help prolong its life in the future. But first, let’s better understand lithium-ion batteries and why they may die in the first place.

jumpstart a dead lithium ion battery

Common Causes of Dead Lithium Ion Batteries

There are several reasons why a lithium-ion battery might go dead, including:

  1. Over-discharging: Using the battery until its voltage drops too low.
  2. Overcharging: Charging the battery beyond its recommended voltage.
  3. Extended storage at a high or low state of charge: Storing the battery for a long time in a fully charged or fully discharged state can cause it to degrade.
  4. High temperatures: Exposing the battery to high temperatures can lead to capacity loss or even thermal runaway, a potentially dangerous event.

Signs of a Dead Lithium Ion Battery

A dead lithium-ion battery may exhibit one or more of the following signs:

  1. Inability to hold a charge or power the device.
  2. Swelling or bulging of the battery.
  3. Reduced runtime or sudden drops in charge level.
  4. Overheating during charging or discharging.

Safety Precautions

General Safety Tips

Before attempting to jumpstart a dead lithium-ion battery, it’s essential to consider safety precautions. Always wear safety goggles and gloves, and work in a well-ventilated area. If you’re unsure about your ability to jumpstart the battery, consult a professional safely.

Tools and Equipment

Use appropriate tools and equipment, such as a multimeter, compatible charger, voltage booster, or power supply. Double-check that all equipment is in good working order and suitable for use with lithium-ion batteries.

Methods to Jumpstart a Dead Lithium Battery

Jumpstarting a dead lithium battery can be difficult, but there are several ways to get your device back up and going. Charging with a compatible charger, voltage booster, and jumpstarting with an external power supply are all options.

Charging With A Compatible Charger

The battery can be charged initially using a suitable charger. To ensure that your device is charged correctly and without any danger of harm, you must be aware of the precise sort of battery it requires. After determining the proper charger, attach it to the device and let it charge until it has enough juice to switch on once more. Ensure all safety precautions when handling electronic devices near water or other flammable materials.

Using A Voltage Booster

Another option for jumpstarting a dead lithium battery is a voltage booster. Voltage boosters are explicitly designed for this purpose and can often be found online or in stores where electronics are sold. Connect one end of the voltage booster to your device’s power outlet and switch it on. The booster should then provide extra power to push start your battery, allowing you to use your device again. Monitor the voltage levels, as too much power, can damage your device.

Jumpstarting With An External Power Supply

Lastly, you may also consider jumpstarting your dead lithium battery using an external power supply if none of the above methods work. An external power supply is essentially like plugging your device directly into an outlet without using its internal batteries or chargers; however, doing this could potentially cause damage if not done correctly, so caution should be taken when attempting this method.

How to jumpstart a dead lithium-ion battery?

Jump-starting a lithium-ion battery can be tricky due to the need for careful monitoring of the charging process. However, with the proper knowledge and tools, it is possible to revive a dead battery safely.

Determine the Battery Voltage

The first step in jump-starting a lithium-ion battery is determining its voltage level. At room temperature, the ideal charge level should fall between 3.6 and 4.2 volts per cell. If the voltage is above or below this range, it likely indicates that the battery has been damaged by overcharging or undercharging, respectively, and will then require professional service before being recharged again.

Select an Appropriate Charger

Once the voltage has been determined, an appropriate charger must be selected not to damage the battery further when recharging. A constant current/constant voltage (CC/CV) charger should be used for most standard lithium-ion batteries.

Gradually Increase the Charging Voltage

The CC/CV charger will slowly increase the current until a maximum allowed charge rate for the specific battery model is reached. After this point, it maintains that current while gradually increasing the voltage until total capacity is achieved.

Monitor the Charging Process

While charging, it’s essential to closely monitor the current and voltage levels, as an improper balance could lead to increased damage on either account. Once full charge is reached, further monitoring should take place to ensure no overcharge occurs, as this can reduce the overall performance of the battery in addition to shortening its lifespan significantly if repeatedly done enough times over time.

How to prevent future lithium-ion battery failures?

To guarantee the durability and safety of lithium-ion batteries used in various devices, ranging from miniature electronics to large electric vehicles, it is vital to undertake measures to prevent potential failures. Four critical measures can help lower the loss risk, including utilizing high-quality chargers, correctly storing batteries, conducting routine maintenance, and monitoring temperature.

Using High-Quality Chargers

One of the most critical steps for ensuring the safe usage and prevention of lithium-ion battery failure is using only high-quality chargers for charging purposes. Many low-quality or counterfeit chargers lack safety features such as overcharge protection or fail to meet voltage standards which can cause damage to lithium-ion batteries if used for extended periods. It is recommended that users always purchase their chargers from trusted sources and verify their specifications before use.

Storing Batteries Correctly

Apart from using high-quality chargers, storing lithium-ion batteries correctly can also help minimize the likelihood of failure in the long term. Batteries should be stored at room temperature with moderate humidity levels when not in use to prevent a decrease in capacity since they are sensitive to extreme temperatures. Additionally, it is advisable not to leave batteries charging overnight, as this increases the risk of overheating, which could result in thermal runaway or fire hazards in severe cases.

Performing Regular Maintenance

Regular maintenance is another essential factor in preventing future lithium-ion battery failures. Over time, dust and dirt may accumulate on battery contacts which can hinder performance or cause operational errors leading up to eventual device failure. Therefore, users must regularly clean their devices and batteries with approved materials explicitly designed.

Monitoring Temperature

Finally, monitoring temperature while charging or operating devices with lithium-ion batteries is vital for increasing safety and reducing potential risks such as sudden shutdowns due to heat build-up or worse-case scenarios such as fires caused by thermal runaway events. If possible, try keeping your device away from direct sunlight or other sources of heat while actively charging or operating devices powered by a built-in li-ion battery pack, as this will help keep them within an acceptable range while being used safely over long periods without risking potential damages due to excessive temperatures reached during charging cycles.

In conclusion

Jumpstarting a dead lithium-ion battery is not as difficult as it may seem. With the right tools, anyone can revive their battery and return it to working order. However, if all else fails, it is essential to remember that seeking professional help is never wrong. Ultimately, remembering to stay safe, using the right tools and supplies, and following this guide can help you quickly jumpstart any dead lithium-ion battery.

21700 vs 18650 Batteries

21700 vs 18650 Batteries: Which Reigns Supreme?

If you frequently use rechargeable batteries, you’ve likely heard of the 18650 and 21700 battery types. These two types of lithium-ion batteries are popular choices for various applications, including flashlights, e-cigarettes, and electric vehicles. But when it comes to choosing between the two, which is better? This article will examine the differences between 18650 and 21700 batteries and help you decide which suits your needs.

21700 vs 18650 Batteries


Rechargeable batteries are essential to our daily lives, powering everything from smartphones to electric vehicles. The two most popular types of lithium-ion batteries are the 18650 and 21700 batteries. Both types have unique advantages and disadvantages, and the decision between them ultimately depends on your specific needs.

What are 18650 batteries?

Cylindrical lithium-ion batteries that are 18mm in diameter and 65mm in length, hence the name 18650, have been around for over two decades and people commonly use them in various applications, including laptops, flashlights, and electric vehicles.

What are 21700 batteries?

21700 batteries are newer cylindrical lithium-ion batteries that are 21mm in diameter and 70mm in length. They were first introduced in 2015 and have gained popularity recently due to their higher capacity and improved performance over 18650 batteries.

21700 VS 18650 batteries

Size comparison

One of the most apparent differences between 18650 and 21700 batteries is their size. As mentioned earlier, 18650 batteries are 18mm in diameter and 65mm in length, while 21700 batteries are 21mm in diameter and 70mm in length. This means that 21700 batteries are slightly larger and heavier than 18650 batteries.

21700 VS 18650 batteries Size comparison

Capacity comparison

Capacity is another important factor when choosing between 18650 and 21700 batteries. 21700 batteries typically have a higher capacity than 18650 batteries due to their larger size. For example, a typical 18650 battery has a capacity of around 3000mAh, while a 21700 battery can have a capacity of up to 5000mAh or more.

Voltage comparison

Voltage is another essential consideration when choosing between 18650 and 21700 batteries. Both types of batteries have a nominal voltage of 3.6V, but the actual voltage can vary depending on the specific battery and application.

Discharge rate comparison

The discharge rate refers to how quickly a battery can release its energy. 21700 batteries typically have a higher discharge rate than 18650 batteries due to their larger size and improved design. This makes them a better choice for high-drain applications such as electric vehicles and power tools.

Charging time comparison

Charging time is another critical factor when choosing between 18650 and 21700 batteries. Generally speaking, 21700 batteries can be charged faster than 18650 batteries due to their larger size and improved design. However, the charging time can vary depending on the battery and charger used.

Price comparison

Price is always an important consideration when it comes to purchasing batteries. Generally speaking, 18650 batteries are more affordable than 21700 batteries due to their smaller size and long history in the market. However, the price difference between the two types of batteries can vary depending on the specific brand and capacity.

Application Comparison

The specific application in which the battery will be used is a crucial factor to consider when choosing between 18650 and 21700 batteries. 18650 batteries are popular for applications such as flashlights, laptops, and e-cigarettes, while 21700 batteries are often used in high-drain applications such as electric vehicles and power tools.

Pros and cons of 18650 batteries

  • Pros:
    • Affordable
    • Widely available
    • Good for low-drain applications
  • Cons:
    • Lower capacity and discharge rate compared to 21700 batteries
    • Longer charging time compared to 21700 batteries

Pros and cons of 21700 batteries

  • Pros:
    • Higher capacity and discharge rate compared to 18650 batteries
    • Faster charging time compared to 18650 batteries
    • Better for high-drain applications
  • Cons:
    • More expensive than 18650 batteries
    • Not as widely available as 18650 batteries

Which battery should you choose?

Choosing between 18650 and 21700 batteries ultimately depends on your specific needs and the application in which the battery will be used. If you’re looking for an affordable battery for low-drain applications such as flashlights and e-cigarettes, 18650 batteries are a good choice. However, if you need a higher capacity and discharge rate for high-drain applications such as electric vehicles and power tools, 21700 batteries are the better choice.


In conclusion, 18650 and 21700 batteries have unique advantages and disadvantages. When choosing between the two, it’s essential to consider factors such as capacity, discharge rate, charging time, and application. Ultimately, the decision between 18650 and 21700 batteries depends on your specific needs and the application for the battery.


Are 21700 batteries better than 18650 for electric vehicles?

  • Yes, 21700 batteries are generally better than 18650 batteries for electric vehicles due to their higher capacity and discharge rate.

Can I use a 21700 battery in a device designed for 18650 batteries?

  • It depends on the specific device and battery. Some devices may be compatible with both types of batteries, while others may only support one type.

Do 21700 batteries have a longer lifespan than 18650 batteries?

  • The lifespan of a battery depends on several factors, including usage and storage conditions. Generally speaking, both 18650 and 21700 batteries have similar lifespans.

Are 21700 batteries worth the extra cost?

  • The answer to this question depends on your specific needs and the application in which the battery will be used. If you require a battery with a higher capacity and discharge rate for high-drain applications such as electric vehicles and power tools, the extra cost of 21700 batteries may be worth it. However, suppose you’re using the battery for low-drain applications like flashlights and e-cigarettes. In that case, the cost difference between 18650 and 21700 batteries may not be significant enough to justify the upgrade.

Can I mix and match 18650 and 21700 batteries in the same device?

  • Mixing and matching different types of batteries in the same device is not recommended. This is because different batteries may have different capacities and discharge rates, resulting in imbalanced power delivery and potentially damaging the batteries or device.
Reset a 18650 Battery

How to Reset a 18650 Battery: A Step-by-Step Guide


18650 batteries are commonly used in many devices, such as flashlights, laptops, and power banks. Over time, these batteries may become unresponsive or fail to hold a charge. In such cases, resetting the battery can help restore its functionality. In this article, we will discuss how to reset a 18650 battery.

Reset a 18650 Battery

Reasons for resetting a 18650 battery

There are several reasons why a 18650 battery may need to be reset, including:


Resetting an over-discharged 18650 battery is necessary to revive it in electronic devices such as laptops and power tools. The first reason for resetting the battery is to remove any residual charge that may have built up inside the cells, which can cause the voltage to drop below its normal operating range. Recalibrating its internal circuitry is also necessary to get the battery back on track.


Overcharging is when a lithium-ion battery is charged beyond its maximum capacity, leading to excessive heat and potentially damaging the device. To prevent overcharging, it’s important to reset them periodically, discharging the battery completely before recharging it from zero percent to total capacity. Resetting helps balance the battery’s internal chemistry and ensures each cell works at its full potential. Resetting the 18650 batteries after extended storage periods is also recommended, as they can lose some of their charges while sitting unused.

Short circuit

A short circuit is one of the most frequent causes of resetting a 18650 battery. A short circuit happens when a battery’s positive and negative sides come into touch with each other, resulting in a rush of energy that can harm or even detonate the battery.

Battery memory effect

Rechargeable batteries can help reverse the effects of memory effect by resetting their 18650 battery. This process involves fully discharging and recharging the battery several times to restore its total capacity. It also helps prevent future memory effects from occurring. However, not all 18650 batteries are created equal; some may be more susceptible to memory effects than others.

Tools required to reset a 18650 battery

To reset a 18650 battery, you will need the following tools:

  • Multimeter
  • Soldering iron
  • Solder
  • Safety glasses
  • Gloves

Steps to reset a 18650 battery

Follow these steps to reset a 18650 battery:

  1. Remove the battery from the device.
  2. Use the multimeter to check the voltage of the battery. If the voltage is below 2V, the battery is over-discharged and needs to reset.
  3. Heat the soldering iron.
  4. Using the soldering iron, connect the positive and negative terminals of the battery for a few seconds, ensuring not to overheat the battery or cause a short circuit.
  5. Disconnect the terminals and let the battery cool down.
  6. Use the multimeter to recheck the voltage of the battery. If it is above 3V, the battery has been successfully reset.

Precautions to take while resetting a 18650 battery

While resetting a 18650 battery, it is essential to take the following precautions:

  • Wear safety glasses and gloves to protect yourself from heat and chemicals.
  • Do not overheat the battery or cause a short circuit, as this can damage or cause it to explode.
  • Work in a well-ventilated area to avoid inhaling toxic fumes.

Testing the reset 18650 battery

After resetting the 18650 battery, testing it to ensure it functions properly is essential. Install the battery back into the device and check if it is holding a charge and working as expected.

How to prevent a 18650 battery from needing a reset

To prevent a 18650 battery from needing a reset, follow these tips:

  • Do not overcharge or over-discharge the battery.
  • Use a high-quality charger that is compatible with the battery.
  • Store the battery in a cool, dry place.
  • Do not expose the battery to extreme temperatures or direct sunlight.


Resetting a 18650 battery can restore its functionality and extend its lifespan. However, following the necessary precautions carefully is essential to avoid damaging the battery. By following the tips mentioned in this article, you can also prevent the battery from needing a reset in the future.


Can I reset any lithium-ion batteries?

  • No, the process of resetting may vary depending on the type of battery.

What is the battery memory effect?

  • The battery memory effect is when a battery may lose its maximum energy capacity over time if it is repeatedly charged and discharged to a certain level.

Can I reset a 18650 battery without a soldering iron?

  • No, a soldering iron is required to reset a 18650 battery.

Can I use a reset 18650 battery on any device?

  • Yes, a reset 18650 battery can be used in any device compatible with the battery’s specifications.
Vape and 3 lithium-ion 18650 batteries

Don’t Risk Your Safety: Choose the Right 18650 Battery for Vaping

Vaping is a popular sport for many people. There has been an increase in the use of electronic cigarettes. The battery is an essential part of an e-cigarette. The 18650 battery is the most popular choice. In this article, we will find out if any 18650 battery can be used for vaping or if specific requirements must be met.

Vape and 3 lithium-ion 18650 batteries

What is a 18650 Battery?

A 18650 lithium-ion rechargeable battery is typically used in high-drain applications such as laptop computers, power tools, and electric vehicles. The name comes from the size – 18mm x 65mm – and the fact that it is a cylindrical cell. It has a capacity of up to 3500mAh and a voltage of 3.7V.

18650 batteries are becoming increasingly popular due to their high energy density, long cycle life, and relatively low cost compared with other rechargeable batteries. They are also environmentally friendly since they can be recharged hundreds or even thousands of times without significant degradation. They are perfect for portable devices like cell phones and laptops because they are lightweight and small.

Can Any 18650 Battery Be Used for Vaping?

Even though 18650 batteries are frequently used for smoking, not all 18650 cells are suitable. Consider the battery’s voltage number and discharge rate when selecting a 18650 battery for vaping. The more strength your vaporizer gadget has, the greater the voltage number and discharge rate.

Discharge rate

A battery’s discharge rate is critical when selecting a suitable battery for vaping. The battery should possess a high discharge rate to release energy quickly and efficiently. Since sub-ohm coils require considerable power, a high discharge rate is imperative for an optimal vaping experience.


Capacity is another crucial aspect to consider when selecting a battery. A high-capacity battery can store a significant charge, providing longer vaping sessions without requiring frequent recharges. However, a battery with a low capacity will not last long and necessitates regular recharging.

Discharge rating

The continuous discharge rating (CDR) is another critical consideration when selecting a battery for vaping. It indicates how much current the battery can safely discharge without overheating or causing damage. A low CDR battery can be dangerous when vaping, leading to overheating and even explosions.


Finally, ensure the battery is high quality and manufactured by a reputable company. Counterfeit batteries plague the vaping industry, which is a danger. To avoid any safety risks, always purchase batteries from trustworthy vendors and never use a battery that raises suspicion of being fake.

Choosing the Right 18650 Battery for Vaping

When selecting an appropriate 18650 battery for vaping, several crucial factors must be considered to ensure the device’s safety and optimal performance. To this end, it is recommended that the batteries utilized be expressly designed for vaping devices. Frequently categorized as high-drain batteries with a substantial volume, these batteries are specially designed to supply the power needed for smoking.

The choosing procedure is far from simple and demands close consideration of every detail. For instance, the battery’s volume and charging rate are the two main factors determining whether it is suitable for smoking and should be considered. It is recommended to seek a CDR of at least 20 amps, if not more. Furthermore, one should prioritize well-known, reputable brands like LG, Samsung, Sony, and Panasonic.

Additionally, it is critical to consult the battery’s specifications to verify that it meets the requirements of one’s specific vaping device. Certain devices may have different battery discharge rates or capacity requisites, so adhering to the manufacturer’s recommendations for optimal battery selection is paramount.

Tips for 18650 Battery Safety

When it comes to the utilization of vaping devices, selecting the appropriate battery is just the tip of the iceberg. There exists a plethora of critical safety protocols that need to be adhered to. Here are some of the most imperative recommendations that will aid in the secure and sound utilization of 18650 batteries for vaping purposes:

Firstly, you must avoid the egregious error of overcharging or over-discharging your battery. The ramifications of this grievous error can be catastrophic, as it may result in battery malfunction or even a catastrophic explosion.

Secondly, the quality of the charger that you employ is of paramount importance. Using inexpensive or counterfeit chargers may lead to irreparable damage to your battery and raise the risk of a safety incident by several notches.

Additionally, you must store your batteries in a cool, dry location sheltered from direct sunlight and any sources of heat that may be present in the environment. This will help to prevent any form of battery degradation and prolong their longevity.

Another crucial consideration that must not be overlooked is the utilization of batteries that have damaged wraps or exposed metal. This egregious error can significantly augment the risk of a short circuit and ultimately lead to battery malfunction or failure.

Finally, you must replace your batteries regularly, particularly if you notice any wear or damage. Neglecting this crucial aspect will put you in harm’s way, as it may lead to severe battery malfunction or a catastrophic explosion.


As one draws near the end of the discourse, it is evident that not all batteries bearing the label “18650” are viable for vaping. Therefore, it is paramount to prioritize safety by selecting batteries engineered for high-drain applications like vaping while considering the selection process’s intricate nature. It is also vital to note that adherence to the manufacturer’s instructions is fundamental and will go a long way in mitigating the probability of compromising the user’s safety, which can be detrimental to the overall vaping experience.

In essence, by taking cognizance of these crucial factors and cautiously opting for the correct battery for your vaping device, you can undoubtedly revel in the euphoria of vaping without any safety concerns. It is, therefore, of utmost importance to exercise caution and employ sound judgment when handling batteries for vaping to prevent safety incidents. This way, you can derive maximum satisfaction from vaping while ensuring safety, which should always be a top priority.

21700 vs 26650

The Ultimate Battery Battle: 21700 vs 26650 – Which One Is Better?

Batteries are an essential part of our lives. Whether powering a flashlight or a laptop, having the right battery is indispensable. Today, a variety of battery sizes are available in the market, but two of the most popular options are 21700 and 26650 batteries. So what’s the difference between them and which one should you choose?

21700 vs 26650

Battery Size and Design

The 26650 battery has a diameter of 26mm and a height of 65mm compared to the 21700 battery’s 21mm diameter and 70mm length. So, compared to the 21700 battery, the 26650 cell is bigger and bulkier. Both batteries are rectangular in shape and have positive and negative connections on either end.


One of the most crucial considerations when selecting a battery is capacity. The normal capacity of the 21700 battery is about 4000mAh, while the standard capacity of the 26650 battery is about 5000mAh. Since the 26650 battery has more capacity than the 21700 battery, it will last longer and work better.


Another important aspect to take into account when selecting a battery is voltage. The voltage of the 21700 battery is usually between 3.6 and 3.7V, while the voltage of the 26650 battery is typically between 3.2 and 3.7V. This indicates that the voltage of the 21700 battery is marginally greater than that of the 26650 battery, which may have an impact on the functionality of particular products.

Discharge Rate

The rate at which a battery can be drained is referred to as the discharge rate. Generally speaking, the 21700 battery discharges at a faster pace than the 26650 cell. Electric cars and power tools are examples of high-drain uses where the 21700 battery performs better.


When selecting a battery, compatibility is a crucial aspect to take into account. The 21700 battery is relatively new and might not work with all devices, whereas the 26650 battery is more frequently used and suitable with a wider variety of gadgets.


When selecting a battery, price is a constant consideration. Generally speaking, the 26650 battery is less expensive than the 21700 battery, though prices can differ by make and type.


The best battery for you will rely on your particular requirements and use the situation as both the 21700 and 26650 cells have advantages and disadvantages. The 21700 battery might be your best choice if you require a battery with a high volume and are prepared to spend a higher price. The 26650 battery, on the other hand, might be a superior option if you require a battery with a fast depletion rate and are searching for a less expensive alternative.


What devices are compatible with the 21700 battery?

  • The 21700 battery is compatible with a range of devices, including electric vehicles, power tools, and flashlights.

Are 21700 batteries more expensive than 26650 batteries?

  • Yes, 21700 batteries are generally more expensive than 26650 batteries due to their higher capacity and newer technology.

Can the 26650 battery be used in place of the 21700 battery?

  • It depends on the device and its compatibility. In general, the 26650 battery may not be the best choice for devices that require a high capacity or high discharge rate.
How long to charge 26650 battery

Quick and easy: How long to charge 26650 battery?

A 26650 battery is a powerful rechargeable lithium-ion battery used in various applications. Charging such a battery correctly is essential to ensure it has the best longevity and performance. But do you know how long should you charge a 26650 battery? And how many factors influence how long the charging process takes?

How long to charge 26650 battery

How long to charge 26650 battery?

It can take up to 540 minutes to charge a 26650 battery. However, this may vary depending on the battery capacity, charger current, and the number of batteries.

If your battery capacity is 5000 mAh and your charger current is 1 A. One way to estimate charge time is to divide battery capacity by charge current1. Using this formula, your charge time would be 5000 mAh ÷ 1000 mA = 5 hours. That is about 300 minutes. However, this may not be accurate as it does not account for other factors, such as battery efficiency and voltage.

How many factors affect the 26650 battery charging time?

The charge time for a 26650 battery depends on several factors, including the capacity of the battery and the charge rate of the charger. Generally speaking, the larger the battery capacity, the longer the charging time. The higher the charge rate (measured in amps) of the charger, the shorter the charge time.

Generally speaking, the standard voltage of the 26650 lithium battery is 3.6 volts to 3.7 volts, the fully charged voltage is 4.2V, and the discharge cut-off voltage is 3.0V. The existing voltage of the 26650 lithium battery that needs to be charged will also affect the charging time, although the effect is not significant.

How to charge a 26650 battery?

Prepare a charger with an output voltage of 3.7V and an output current of 1A, plug it into a wall outlet, and connect the positive (red) and negative (black) wires of the charger to the corresponding terminals on the battery. The charging indicator red light should show that your battery is charging. Make sure you don’t let it charge for too long – usually, 8 hours is enough. And be sure to unplug the plug after the red light turns green and the charging is complete.

Why your 26650 battery is not charging?

There are a few possible explanations if your 26650 battery is not charging. First, make sure that your charger is compatible with your battery. If it’s not, then the battery won’t charge no matter what you do. Second, check to ensure that the contacts on the battery and charger are clean and debris-free. If they’re dirty or corroded, the connection won’t be strong enough for charging. Finally, make sure that the charger itself is functioning correctly. If it’s malfunctioning, it won’t be able to charge your battery correctly.

If none of these solutions solve your problem, it may be time to replace your 26650 battery or purchase a new charger. It’s important to always use high-quality batteries and chargers for optimal safety and performance.

26650 batteries applications

What are 26650 batteries used for? 4 game-changing applications

26650 batteries are lithium-ion batteries commonly used in high-performance applications. These batteries are 26mm in diameter and 65mm in length, hence the name 26650. They are larger and more potent than standard lithium-ion batteries, making them ideal for demanding applications requiring much power.

26650 batteries applications

You can use 26650 batteries for high-powered flashlights.

One of the primary uses for 26650 batteries is in high-powered flashlights. These batteries can deliver a high amount of current, essential for powering bright LED lights. They are also popular in vaping and used to power mods that require a lot of energy. 26650 batteries are also commonly used in electric vehicles, such as e-bikes and electric scooters, providing a stable and robust energy source.

Portable power banks

Another widespread use for 26650 batteries is in portable power banks. These devices charge smartphones, tablets, and other electronic devices on the go. With a 26650 battery inside, a power bank can provide several total charges to a smartphone, making it an essential accessory for people who are always on the move.

Electric Vehicles

26650 batteries are lithium-ion batteries typically used in high-power applications such as electric vehicles. They are famous for their large capacity and ability to discharge rapidly, making them an ideal choice for powering electric vehicles.

26650 batteries are also known for their long cycle life and low self-discharge rate. This means they can be recharged multiple times without losing their capacity or power output, making them reliable for powering electric vehicles over long distances.

26650 batteries for renewable energy systems

26650 batteries are also used in renewable energy systems, such as solar panels and wind turbines. These batteries are ideal for storing energy from renewable sources, allowing it to be utilized later. This is especially important in remote areas without access to the electrical grid.

In conclusion

26650 batteries are versatile and powerful, making them ideal for various applications. These batteries are vital in many modern technologies, from high-powered flashlights to electric vehicles, portable power banks, and renewable energy systems. If you’re looking for a reliable and long-lasting power source, consider investing in a 26650 battery.

18650 vs 26650 vs 32650 battery

18650 vs 26650 vs 32650: The Ultimate Lithium Battery Comparison

A few famous types of lithium batteries are frequently used in different electrical products. These batteries include the 18650, 26650, and 32650. Each of these cells has its features and advantages, making it difficult to determine which is ideal for your particular requirements. Let’s look at these cell capacities and evaluate their performance and features to help you make an educated choice.

18650 vs 26650 vs 32650 battery

18650 Batteries

The 18650 battery is currently one of the most common lithium batteries. It’s prevalent in small electrical products like computers, torches, and e-cigarettes. The tiny dimension of the 18650 battery is one of its main benefits, making it perfect for products that require a compact power source.

The 18650 battery has a high energy capacity and a lengthy run-life in terms of efficiency. This means it can hold a lot of energy and be refilled many times without losing capability. Furthermore, the 18650 battery has a low self-discharge rate, meaning it can retain a charge for an extended period when unused.

18650 vs 26650 Batteries

The 26650 lithium battery is a bigger one frequently found in power equipment, electric cars, and solar energy devices. The 26650 battery, as opposed to the 18650 battery, has a greater volume and can provide more power for an extended time.

The 26650 battery has a better run life than the 18650 battery and a more significant volume. This implies that it can be refilled more times before losing capability. One disadvantage of the 26650 battery is its bigger size, which makes it challenging to use in smaller devices.

32650 vs 26650 vs 18650 Batteries

The 32650 lithium battery is the biggest of the three. It is frequently used in heavy-duty uses such as electric cars, renewable energy systems, and robust power tools. The 32650 battery, like the 26650 battery, has a large volume and can provide more electricity for longer.

One of the main benefits of the 32650 battery is its high current production, which makes it perfect for high-power uses. Furthermore, the 32650 battery has a long run life and can be refilled numerous times before its capability degrades. The 32650 battery’s disadvantage is its big bulk, which makes it challenging to use in smaller products.

32650 battery specs (size, voltage, and volume)

The 32650 battery has physical measurements of (D x H) 32 x 67.7 mm (1.26 x 2.67 inches), an average voltage of 3.2-3.7V, and a numerical volume of 5000-8500 mAh.

In conclusion

Finally, these lithium batteries have distinct characteristics and advantages that make them perfect for particular uses. Because the 18650 battery is tiny and lightweight, it is ideal for handheld electrical products. The 26650 battery is perfect for power tools and electric cars due to its greater volume and extended service life. The 32650 battery is the most powerful and influential of the three, making it suitable for heavy-duty uses.

The best lithium battery for your particular needs will be determined by various variables, including your device’s capacity and power requirements, as well as your money and general objectives. By closely considering these considerations, you can choose the lithium battery that best suits your needs and helps you accomplish your goals.

Do lithium ion batteries leak?

Do lithium ion batteries leak?

Lithium-ion batteries have become increasingly popular in recent years due to their ability to hold a charge for extended periods. As with any battery, however, potential risks always come with their use. The most concerning issue when it comes to lithium-ion batteries is whether or not they can leak and cause damage to whatever device they are powering. This article aims to answer this question comprehensively.

Do lithium ion batteries leak?

Do lithium ion batteries leak?

Yes, lithium-ion batteries can leak, but it is rare. When it is exposed to extreme temperatures or overcharging, the risk of leakage increases significantly. Additionally, if a battery is punctured or damaged, it can lead to leakage.

When a battery leaks, it can cause damage to the device that it powers and present a fire hazard. In some cases, a battery might even explode. This is why taking precautions when using lithium-ion batteries is essential, so you don’t risk an incident with them. If you suspect your lithium-ion battery has leaked, immediately stop using the product and contact your local fire department for assistance with the cleanup and disposal.

What leaks out of lithium-ion batteries?

Lithium-ion batteries are generally safe and don’t leak often. However, taking precautionary measures to prevent them from leaking is still essential. When a lithium-ion battery is damaged, it can leak electrolytes or other chemical materials. And when the battery is overcharged, the electrolyte inside begins to break down, producing gases that can escape from the battery housing.

These gases can be hazardous and potent electrolytes can leak through a puncture and create chemical reactions that could lead to a dangerous fire. Fortunately, lithium battery producers have increased these cells’ safety through various measures, effectively reducing the risk of leaks.

Do lithium-ion batteries leak liquid?

Yes, lithium-ion batteries can leak liquid due to short circuits or old age. The most common signs are a swollen battery, discoloration of the battery casing, and corrosion around the terminals. To prevent electrolyte leakage, it is important to not expose the device to high temperatures or direct sunlight for long periods. Avoid overcharging or discharging the battery too quickly, and use an appropriate charger matching the device’s voltage requirements.

Do lithium-ion batteries leak liquid?

Do lithium-ion batteries leak gas?

Yes, lithium-ion batteries can leak gas if not used or charged correctly; overcharging and overheating can cause them to swell up and release gasses, which may lead to a fire. It’s also essential to keep them away from extreme temperatures and direct sunlight to prevent them from overheating and leak gas.

Do lithium ion batteries leak acid?

Lithium-ion batteries do not leak acid because they are not manufactured from acid-based materials. A cathode and an electrode of metal compounds or plastics comprise lithium-ion batteries. The electrolyte between them is usually a solution of lithium compounds, such as LiPF6, in an organic solvent like ethylene carbonate. This combo results in no corrosive materials leaking from the cell.

How do I know if my lithium battery is leaking?

If you suspect your lithium battery is leaking, there are a few ways to check. Suppose you see any discoloration or the battery feels swollen or hot. In that case, this may indicate that it is damaged and should be replaced. A multimeter can measure voltage and connect one probe to each battery terminal. If a reading other than 0V, this could indicate an internal leak. Additionally, if any strange smells are coming from the battery, these could indicate a leak and should be investigated further.

Use multimeter to test lithium-ion battery

What happens when a lithium-ion battery leaks?

You may tell if a lithium-ion battery leaks by looking for signs of discoloration or swelling. If the battery seems discolored, has an odd smell, or feels swollen, these are all indicators that it could be leaking. In addition, if your device suddenly stops working after inserting a new battery, this could also be a sign of leakage. 

swollen battery

Lithium-ion battery leak smell

When a lithium-ion battery leaks, the smell is described as “burning plastic” or “burned electronics.”. In some cases, it may be accompanied by smoke or visible damage to the battery’s exterior. It is essential to take action immediately to avoid contact with any liquid leaking. And plug any devices that contain the leaking battery and move them away from other flammable objects.

What causes lithium-ion batteries to leak?

Lithium-ion batteries can leak due to exposure to extreme temperatures, overcharging, or damage. When exposed to excessively high or low temperatures, the electrolyte inside the battery can expand or contract, causing the battery to leak out of the casing. And overcharging can lead to increased heat and pressure in the battery, creating leaks. Physical damage to Li-ion batteries can also cause them to leak.

lithium-ion battery leak hazard

If a lithium-ion battery leaks, it can cause damage to the surrounding environment. Injury if humans or animals come into contact with leaked chemicals. The most common hazards from leaking lithium-ion batteries include fire, explosion, and chemical burns.

lithium-ion battery leak on the skin

If a lithium-ion battery leaks on the skin, it may cause irritation and burns. To deal with it quickly, flush the hurt area with water for at least 15 minutes to remove any chemicals that may have leaked onto your skin. Then, apply a cold compress or ice pack. You should pay medical attention if your skin is experiencing pain or redness because the doctor can assess the extent of the damage and provide additional treatment if necessary.

How to prevent lithium-ion battery leaks?

The important ways to prevent lithium-ion battery leaks are to use the correct charger for your device. Avoid leaving your device plugged in overnight or when not in use. And be sure to store your device correctly, like keeping it in a cool, dry place with plenty of ventilation when it’s not in use. Also, check for any signs of wear or corrosion on the battery; if any is present, replace it immediately.

How to clean up lithium battery leak?

When handling a lithium battery leak, it is essential to safely contain and dispose of the spill. You should use an absorbent material like paper towels or sawdust to soak up any leaked liquid. The area should be washed and dried thoroughly before using a cotton swab with rubbing alcohol. It would help if you took proper safety precautions to ensure the battery is handled correctly. Finally, remember to recycle any old batteries properly. If you need help, contact your local hazardous waste disposal service for assistance.

In conclusion

Lithium-ion batteries can potentially leak and pose a safety hazard if we do not correctly care for them. It is crucial to properly store your battery, avoid extreme temperatures, and keep the terminals clean and dry. And never leave a charging battery unattended to prevent leaking. Additionally, it is best to buy quality batteries directly from reliable sources. By following these tips, you can ensure that your lithium-ion battery remains safe and performs well.

How to tell if a lithium ion battery is bad

How to tell if a lithium ion battery is bad?

Lithium-ion batteries are an essential and powerful energy source. Still, it can be difficult to tell when the problem needs to be fixed. Knowing if a lithium-ion battery has gone wrong is vital for maintaining your devices and ensuring you get the most out of them. In this article, we’ll show you some of the signs to look out for so you can recognize when a lithium-ion battery is degrading or no longer functioning correctly.

How to tell if a lithium ion battery is bad

How to tell if a lithium-ion battery is bad?

If you suspect your lithium-ion battery is bad, look for signs that it is not holding a charge as it used to. The device is running hot while charging or in use, and the device shuts down unexpectedly or won’t turn on. These are all signs that the battery needs to be replaced.

5 Signs of a Bad Lithium-Ion Battery

Reduced battery life

One of the most common indicators of an aging lithium-ion battery is decreased performance after numerous charge cycles. With each new charge, the device will not operate as long as before or may even turn off immediately after being unplugged.

Swelling or bulging

The second sign of a bad lithium-ion battery is swelling or bulging. Excess heat is built inside the battery, causing pressure within the cells. As this pressure increases, it will cause the outer casing of the battery to expand outward in certain areas – usually near the middle. It leads to swellings and bulges on one end or side of the battery.


If your battery is too hot to touch, it may indicate something is wrong. Your device’s battery can overheat for various reasons, such as imbalanced current, short circuits, or defective components in the charging system. If left unchecked, the heat can cause permanent damage to the lithium-ion battery and even lead to a fire hazard.

To prevent further damage, it’s essential to observe the proper charging protocol for your device and ensure that all components function correctly. Always use original chargers and cables, as counterfeit products could be faulty or contain low-quality materials. They can generate excessive heat when connected to lithium-ion batteries.

Slow charging

Suppose your device takes longer than usual to charge when plugged into the socket or computer. That may be a sign of a bad lithium-ion battery in that case. When this happens, it’s essential to take steps to determine if the slow charging is due to an underlying problem with the battery itself or another factor, such as an unreliable charger or power source. If other chargers don’t work either, it’s likely related to your battery deteriorating over time and needing replacement. 

Failure to hold a charge

The final telling symptom of a bad lithium-ion battery is an inability to hold a charge for more than a few hours or minutes – sometimes even seconds! This could mean your device runs out of power quickly, even after being charged for an extended period. 

How to Troubleshoot a Bad Lithium-Ion Battery

Suppose you’re having any of the above problems with your lithium-ion battery. In that case, you can take a few measures to fix the issue before replacing it. To begin, consider restarting your device by turning it off and on again. If that doesn’t work, try an alternative charging connection or outlet to see if that makes a difference. To save battery life, you can also lower the luminance of your device’s screen or shut off any useless applications or functions.

How to reset a lithium-ion battery

How to reset a lithium-ion battery?

Resetting a lithium-ion battery needs to run until it shuts off. And then charge it up to 100%. This will reset the battery’s internal memory and restore its total capacity. If this doesn’t work, you may run the battery down to around 40%, then charge it back up to 80% before repeating this cycle several times (typically 3-4). This should help recalibrate the battery and restore its performance.

How to tell if a 12v lithium-ion battery is bad?

If you suspect, you can perform a few checks to determine whether your 12v lithium-ion battery is defective. Use a voltmeter first to verify the battery’s power. It might not be good if the voltage is much lower than 12 volts. You can also run a load test to determine how much current the battery can give. It might be a defective battery if it doesn’t supply power according to the manufacturer’s specs. Last but not least, if you have access to an amp-hour meter, you can use it to determine the battery’s capability. And whether or not it has deteriorated over time.

How to do a li-ion battery test?

Testing a lithium-ion battery is a relatively straightforward process that can be done using a multimeter. First, set the multimeter to measure voltage. Connect the multimeter’s positive lead to the battery’s positive terminal and the negative lead to the negative terminal. A fully charged battery should read between 3 and 4 volts. If it reads lower than this, then it’s likely that your battery is not fully charged. 

Next, set your multimeter to measure resistance. Connect the leads as before, and you should get a reading of approximately 0 ohms if your battery is in good condition; higher readings may indicate an issue. 

Finally, use your multimeter to measure the current draw by connecting both leads of the meter in series with the positive and negative terminals of the battery.

How to test a lithium-ion battery with a multimeter

How to test a lithium-ion battery with a multimeter?

Testing a lithium-ion battery is a straightforward process that can be done using a multimeter. You should set the multimeter to measure voltage, resistance, and current draw. The positive lead should be between 3 and 4 volts for a fully charged battery, and the corresponding lead resistance should be 0 ohms.

How to test a lithium-ion battery without a multimeter?

Testing a lithium-ion battery without a multimeter is possible, and there are various methods to do so. Before testing the battery, charging it for at least 45 minutes is essential. One option is to use a flashlight or other device to observe the level of power stored in the battery. Xantrex also makes an excellent battery level gauge for lithium systems, which works similarly to the gas gauge on your car. If the battery has significantly lower than rated capacity, it may have a high internal resistance; testing this can be done using a resistor tester or an ohmmeter. Finally, tutorial videos are available online explaining how to test battery capacity without specialized tools.

When to Replace a Lithium-Ion Battery?

Replacing a lithium-ion battery is often the best solution when troubleshooting steps do not resolve the issue. This type of battery has a limited lifespan and will eventually need to be replaced. The exact timing depends on how much you use the device, how frequently you charge it, and other factors. 

It’s crucial for safety, and environmental preservation that used lithium-ion batteries are disposed of properly. It is essential to discard them correctly; they shouldn’t go in the trash or recycling receptacles at home. Instead, we should bring them to a recycling facility or a location where toxic refuse is collected. Studying the manufacturer’s directions entirely before fitting a replacement battery is recommended. You should install the battery straight. To avoid harm or hurt, the replacement battery should only be charged using authorized devices and kept out of the reach of children and pets.

In conclusion

Knowing the signs of a damaged Li-ion battery is essential to ensure you use your device correctly and safely. If you notice any signs discussed in this article, replace the battery immediately. At the same time, pay attention to replacing new batteries and the related matters of disposing of old batteries. If you have any questions about lithium batteries, please get in touch with us.