Lithium Batteries May One Day Replace Conventional Submarine Diesel Engines

Lithium Batteries May One Day Replace Conventional Submarine Diesel Engines

With the advancement of lithium technology, it is possible that lithium batteries may one day replace conventional submarines’ diesel engines. The Japanese Navy has already implemented the use of LIBs in its Soryu-class attack subs. South Korea is also testing the technology for their next-generation attack subs. Other applications for LIBs include the US Special Forces delivery vehicle, as well as the Russian Surrogat unmanned mini-sub.

However, the technology has its drawbacks. Lithium is flammable and can catch fire when exposed to water. Leaks in lithium can reach temperatures of 3,600 degrees Fahrenheit. Furthermore, a fire in a lithium battery releases hydrogen gas, which is highly flammable. While the benefits of using lithium batteries for submarines are numerous, there are still significant concerns about the safety of this technology.

While there are a number of downsides to lithium-ion batteries, the technology has proven to be reliable. Japan, for example, plans to build one more Soryu-class submarine with LIBs. The development of a LIB-submarine would also allow Japan to upgrade its older Stirling AIP powered Soryus. So, while LIBs present certain risks, they are expected to make an impact in the future of submarine propulsion.

While LIBs have some risks, these batteries have been proven to be safer than lead-acid batteries. The research and development of light-metal batteries will benefit from this data. The US Navy has already chosen lithium-ion main batteries for its KSS-III batch 2 submarines. In addition, South Korea has chosen to use lithium-ion batteries in its nuclear-powered Soryu-class boats. The seventh Soryu-class boat is also expected to incorporate a combination of Stirling Engines and lithium-ion batteries. These vessels will serve as a bridge between lead-acid and lithium-ion technologies.

The development of LIB batteries is a challenge for the lead-acid-powered submarines. They can’t be fully replaced by lead-acid batteries and will remain a major asset for the military for years to come. But the advancements in the technology have opened up new doors for submarines. The resulting improved performance means they can cruise for longer periods of time under the water.

Despite the risks of Lithium-ion batteries, they are the most reliable option for submarines. Although the lithium-ion batteries are safer than lead-acid batteries, they do have some drawbacks. In addition to high cost, they have high maintenance and are not completely safe to use in the ocean. Moreover, they are expensive to operate, requiring extensive maintenance.

The benefits of LIBs are considerable. In addition to their high-speed capability, they are also incredibly safe and durable. If the marine environment is a threat to the life of a submarine, it is essential to ensure that it is safe to use and a reliable and long-lasting power supply. Ultimately, LIBs will save lives. But for now, these batteries are not without risks.

Because of the huge benefits of lithium-ion batteries for underwater vehicles, they have many other advantages. Compared to conventional submarines, they have a lower cost than lead-acid submarines. They can also be operated for longer periods of time. This makes lithium-ion-powered subs an attractive option for many companies and governments. This technology can be used in other fields as well, including for commercial purposes.

The use of lithium batteries for conventional submarines could dramatically reduce their costs. The cost of lithium-ion batteries could be cheaper than traditional lead-acid batteries, and the technology may be more efficient than lead-acid. Additionally, the high-energy density of lithium-ion-based batteries will provide longer service life. They are also more reliable than lead-acid batteries.

The development of lithium-ion batteries for submarines is an exciting development. The advanced batteries will give the submarines better endurance under water, which is crucial for a modern submarine. These batteries may also be the main power supply for conventional submarines. They are not only cheaper than lead-acid batteries, but they are lighter, more efficient and more environmentally friendly. In the future, these submarines may use this technology to be able to operate at greater depths than ever before.

Applications of Rechargeable Lithium Polymer Battery Pack

Applications of Rechargeable Lithium Polymer Battery Pack

A lithium polymer battery pack is made of a number of lipo cells. The configuration of these cells determines their voltage, capacity, and C rating. They can be arranged in parallel or series, depending on the type of battery. Arrangements of these cells affect the capacity and voltage of the battery pack. It is important to avoid mixing different types of cells because they will not work well together. A poorly matched pack can lead to underperformance.

Another application of rechargeable lithium polymer battery pack is in medical devices. These batteries can be used in radios and media devices, as they are lighter and offer more power. They can also be used in electric vehicles. These batteries are lightweight and compact, making them an ideal choice for such applications. They can provide power for a long time and can be easily transported. Some of these batteries are designed to be reusable.

Rechargeable lithium polymer battery is an excellent choice for electric vehicles. Its high energy density makes it a desirable option for electric vehicles. This type of battery is also great for radio-controlled devices. Its compact design makes it easy to carry and transport. In addition to automobiles, the lithium polymer battery is also used for other applications. It can power personal digital assistants and pagers, and can be found in many other devices.

In addition to these devices, the lithium polymer battery is the ideal solution for various industrial applications. Its low cost makes it an ideal choice for many uses. Its high capacity makes it an excellent choice for a wide range of industries. Whether it is an oil-injection system or a pager, the battery is an excellent solution. And it is a great option for electric vehicles. Those who use it in their daily lives will love the versatility of this type of battery.

The lithium polymer battery has been in development for over a decade. Its replacement for nickel-metal hydride batteries is a major step in the evolution of digital products. China-based electronics manufacturers, in particular, are focusing on developing new products based on consumer preferences. In addition to providing power for electric vehicles, the high-end technology of the rechargeable lithium polymer battery is an excellent solution for the medical industry.

How to Detect the Charging Loss of an 18650 Lithium Battery Pack

How to Detect the Charging Loss of an 18650 Lithium Battery Pack

How to detect the charging loss of an 18650 lithium battery pack?
1. Battery consumption performance: battery voltage does not go up and capacity decreases. Measure directly with a voltmeter, if the voltage across the 18650 battery is lower than 2.7V or there is no voltage. Indicates that the battery or battery pack is damaged. The normal voltage is 3.0V ~ 4.2V (generally the 3.0V battery will cut off the voltage, the 4.2V battery voltage will be fully charged, and some have 4.35V).
2. If the battery voltage is lower than 2.7V, you can use the charger (4.2V) to charge the battery. After ten minutes, if the battery voltage has rebounded, you can continue to charge until the charger indicates that it is fully charged, and then check the full voltage.
If the fully charged voltage is 4.2V, it means that the battery is normal. It should be that the power consumption was too much in the last use, and the battery is cut off. If the fully charged voltage is much lower than 4.2V, it means the battery is damaged. If the battery has been used for a long time, it can be judged that the battery life has expired and the capacity is basically exhausted. should be replaced. Basically there is no way to fix it. After all, lithium batteries have a lifespan, not infinite.
3. If the 18650 lithium battery pack is measured and the battery has no voltage, there are two situations at this time. One is that the battery was originally good, and it was caused by long-term power loss storage. This kind of battery has a certain probability of recovery. Generally, it is activated by a lithium battery pulse. It is possible to recharge the battery several times in a short period of time by using an instrument (lithium battery charging and discharging instrument). Generally, the repair cost is not low, and it is better to buy a new one. Another possibility is that the battery is completely worn out, the battery separator is broken down, and the positive and negative electrodes are short-circuited. There is no way to fix this kind of thing, just buy a new one.
18650 lithium battery pack battery repair method principle:
1. The metal surface of the 18650 lithium battery pack that has been used for a long time will be oxidized to a certain extent, which will lead to poor contact between the mobile phone battery and the mobile phone, and the use time of the lithium battery will be shortened. Rusty substances that make the battery better in contact with the phone.
2. The low temperature can change the electrolyte inside the lithium battery pack and promote the chemical reaction of the battery that has just been frozen. The use of lithium batteries is actually a charging and discharging process. During this time, the negative and positive charges in the battery collide with each other. When the lithium battery is placed in a low temperature environment, the microstructure of the lithium film on the surface of the lithium battery and the electrolyte, as well as their interface will change significantly, resulting in a temporary inactivity inside the battery and a reduction in leakage current. So after charging again, the standby time of the phone will increase.
The cycle life of the lithium battery pack is about 600 times. If there are too many charging times, the thermal motion of the molecules will gradually destroy the microstructure of the internal molecular arrangement, and the efficiency of storing electric charges will gradually decrease.

Precautions For the Use of Lithium Polymer Batteries

Precautions For the Use of Lithium Polymer Batteries

Precautions for the use of polymer lithium-ion batteries.

1. It is forbidden to disassemble the battery under any circumstances.

2. It is forbidden to immerse the battery in water or sea water, and it cannot be damp.

3. It is forbidden to use or place batteries near heat sources, such as fires, heaters, etc.

4. It is forbidden to heat the battery or throw it into fire.

5. It is forbidden to directly weld the battery.

6. It is forbidden to charge in a fire or a very hot environment.

7. It is forbidden to put the battery into the microwave oven or high pressure container.

8. It is forbidden to use or place the battery under high temperature (such as strong sunlight or very hot car), otherwise it will cause overheating, fire or function decline and shortened life.

9. In theory, there is no flowing electrolyte in the polymer lithium-ion battery, but if the electrolyte leaks and comes into contact with the skin, eyes or other parts of the body, immediately rinse the electrolyte with clean water and seek medical attention.

10. It is forbidden to use damaged cells (the plastic edge of the cell is damaged, the casing is damaged, the electrolyte gas is smelled, the electrolyte leaks, etc.).

In order to prevent the polymer lithium-ion battery from leaking, heating, and exploding, please pay attention to taking relevant precautions. If you are not sure, you can check the reasons that affect the number of cycles and life of the lithium-ion battery. Only know how to use polymer lithium correctly Ion batteries can maximize the battery’s electrical performance and have a longer service life.

How to DIY a 12v LiFePO4 Battery Pack From a 32650 LiFePO4 Battery Cell

How to DIY a 12v LiFePO4 Battery Pack From a 32650 LiFePO4 Battery Cell

Nowadays, many rechargeable electrical appliances in life use lithium batteries, such as soft packs, cylindrical, rectangular and so on. Among them, cylindrical lithium batteries are divided into various models according to their size, such as the most common 18650, 22650, 32650 and so on. The number 18 in the model like 18650 indicates the diameter of the battery, 65 indicates the length of the battery, and 0 indicates that the battery is a cylinder.

The voltage of a single-cell lithium battery is generally 3.2V to 3.7v, and the voltage used by many electronic devices is 12V, so we need to use multiple lithium batteries to form a group to achieve 12v, and the lithium battery assembly also needs to be equipped with a protective plate.

The main purpose of the protection board is to play overload protection, short circuit protection, overheat protection, low voltage protection, overvoltage protection, battery balance, overcharge protection, etc., mainly to protect the battery from being damaged.

Since the capacity of a single battery is relatively small, 12 32650 lithium batteries are prepared, four are connected in series to form a group of 12V, and then three groups of 12V are connected in parallel to increase the capacity and voltage.

Assembling the battery requires the use of nickel tape, high temperature tape, and battery brackets.

Generally, the connection of lithium batteries is to use spot welding to bring the nickel to the point. If there is no spot welding machine, you can use sandpaper to polish both ends of the battery, and then you can use an electric soldering iron to weld.

Get the battery line, measure the voltage, and see if the capacity is the same. Don’t put the different ones together.

Then install the battery and battery holder and arrange them in a positive and negative order.

Then wrap the heat resistant tape around it.

Connect the batteries with nickel tape, a soldering iron will do without a spot welder. By the way, stick the protective plate on top of the tape.

For the effect of spot welding of nickel strips, it is necessary to distinguish which one is connected with which one, otherwise it will cause a short circuit.

Then solder the protection board and the plug. Generally, the protection board will indicate the connection method in detail, and it is enough to connect with wires.

If you feel that one plug is too few, you can add another one, and the 12V lithium battery is completed.

Tips to Extend the Cycle Times of Lithium Polymer Battery Packs

Tips to Extend the Cycle Times of Lithium Polymer Battery Packs

How to extend the life of polymer lithium battery? It is a question that everyone wants to know. Professional lithium battery manufacturer Nuranu shares:

1. When charging the polymer lithium battery, it is best to choose the original special charger, otherwise it will affect or damage the polymer lithium battery.

2. It is best to charge the polymer lithium battery in a slow charging method, and try to avoid fast charging. Repeated charging and discharging will also affect the life of the polymer lithium battery.

3. If the mobile phone is not used for more than 7 days, the polymer lithium battery should be fully charged before use. The polymer lithium battery has self-discharge phenomenon.

4. The charging time of the polymer lithium battery is not as long as possible. For ordinary chargers, when the polymer lithium battery is fully charged, it should stop charging immediately, otherwise the polymer lithium battery will affect the battery performance due to heat or overheating.

5. After the polymer lithium battery is charged, try to avoid placing it on the charger for more than 10 hours. If it is not used for a long time, the mobile phone and the polymer lithium battery should be separated.


The polymer lithium battery does not need to be charged for the first 3 times. It only needs to be fully charged. It will take about half an hour after being fully charged at most. Overshoot and overdischarge will have a serious impact on the life of the polymer lithium battery. Usually should pay attention to charging. It is best to use the original charger, and it is not recommended to use a universal charger.

5 Tips For Charging Lithium Polymer Batteries

5 Tips For Charging Lithium Polymer Batteries

Talking about charging Li-Polymer batteries, we decided to list our 5 tips for charging Li-Polymer batteries. Now because almost all drones use lithium polymer batteries (LiPo), only lithium polymer batteries are discussed in this article.

1. First make sure you are using the correct charger.

Charge any polymer lithium battery at 1C, almost all drone lithium batteries can be charged at 1C and should be charged at that rate. 1C charging does take a bit of time, but this charging speed is the easiest for your lithium battery charger and won’t cause overheating. This charging rate will give your battery the longest life possible, letting the balance port do its job. For example, a 3400mAh battery charging at 1C sets the charger to a 3.4 amp charge rate.
Both the battery and the battery pack are charged in a fireproof bag during charging, and I don’t see any reason why the battery should not be charged in a fireproof bag. If your charger comes with a temperature probe, be sure to put it in the bag. If everything is packed in a fireproof bag, you can easily and complete the charging.

2. Don’t let your battery go below the minimum voltage.

It’s a flight issue, not a charging issue, but it needs to be addressed. When flying, try not to let the battery drain until the speed control starts to turn off, unless you replace it. Then you have more time, more power until you land the drone. This avoids drone fried chicken, and you can control the minimum speed cutoff, set above the minimum voltage of the battery pack to allow some extra time to set the landing. I like to time my first flight until the speed control cuts off and then set my timer for a minute before the launcher and on all voyages after that I find that the launcher timer is off as soon as I land mine drone.

3. An accident will happen unless the manufacturer’s battery allows it.

Charge the battery above 1C, if the battery is using a higher charge rate, this can save a lot of time when needed. Try not to charge these batteries with a higher rating if you don’t need to. But other than that, I always use the slower rate at home because it increases battery life.

4. Please don’t leave the room when your battery is on the charger.

This is a mistake almost everyone makes, and the number one safety issue when charging. This prevents any minor accident from becoming a major event if not leaving the room. When you are not in the room, while charging, a fire can happen at any time. While charging, you need to be there to monitor your battery. If you must leave the room, stop the charger and disconnect the battery from the charging cable. Then when you go back to the room to charge again.

5. What if your battery has not been used for more than a week, then please charge your batteries, this will keep them balanced and stable.

Storing charge prevents individual cells from becoming unstable and out of balance. I almost always charge my battery and then fully charge it the night before.

How to Choose 18650 Lithium-Ion Battery With High Quality and High Safety

How to Choose 18650 Lithium-Ion Battery With High Quality and High Safety

18650 lithium batteries are mostly used in notebook computer batteries due to their large capacity per unit density. In addition, because 18650 has very good stability at work, they are widely used in major electronic fields: commonly used in high-end strong light Flashlights, portable power supplies, wireless data transmitters, electric thermal clothing, shoes, portable instruments and meters, portable lighting equipment, portable printers, industrial instruments, medical instruments, etc.

So how to choose a high-quality 18650 lithium-ion battery? Choose the most suitable 18650 lithium battery according to our electrical equipment, such as the appropriate brand, voltage, capacity, continuous discharge rate, battery life, etc. The most important thing is to choose a battery with high safety. Below we will introduce them in detail:

1. Brand

As for brands, the most reliable ones are Sanyo, Samsung, SONY, LG and other internationally renowned brands. Sanyo and LG focus on routines, and their applications are mainly bright flashlights, power banks, and laptop batteries. SONY professional, the main power and high current. Taking VTC4 as an example, the discharge current can reach 30A, and it can easily handle electronic cigarettes, toys, etc.

2. Nominal capacity

The nominal capacity of the 18650 battery is related to the battery life. The unit is “mAh”. The higher the capacity, the stronger the battery life. For example, a 2800mAh battery can be continuously discharged for 2 hours at a current of 1.4A.

3. Continuous discharge current (CDR)

Continuous discharge capacity is expressed by C number, continuous discharge current = continuous discharge capacity C number × capacity. For example, the capacity of a 18650 battery is 2800mAh and the continuous discharge capacity is 0.5C, then the continuous discharge current = 1.4A. If the discharge exceeds 1.4A for a long time, the battery life will be seriously affected, and there may be dangers of overheating, even burning, explosion, etc. .

5. Internal resistance

The internal resistance is the resistance of the battery itself. The smaller the internal resistance, the lower the consumption and the stronger the discharge capacity. The parameter of internal resistance is usually written on the battery introduction page. You should also pay attention to it when purchasing. Try not to use it. Buy more than 100mΩ or more cells. If you use multiple 18650s in series, you must buy batteries of the same brand and type, otherwise batteries with large internal resistance and low capacity will become a short board.

6. Temperature

Temperature is a major factor affecting the life of 18650 lithium battery. The higher the temperature, the faster the battery will age, and the higher the temperature, the greater the damage to the battery.

7, pointed and flat

The 18650 lithium battery also has a flat head and a pointed head. The positive electrode on the left side has a protruding point, and the positive electrode on the right has no protrusions. It is a flat head. In general, I recommend buying pointed batteries to ensure compatibility with more devices and uses. Usually, the positive and negative poles of the flashlight are designed with springs, which can be retracted and can be used whether it is a pointed or flat battery. But if you want to use a flat head battery in series, the positive pole of the flat head cannot touch the negative pole of the other battery.

8. With and without protective plate

The pointed 18650 has a protective plate, and the flat 18650 does not have a protective plate. The 18650 lithium battery with a protective plate is a few mm higher than the 18650 lithium battery without a protective plate, and the price is slightly more expensive, but it is safer and more versatile. The 18650 lithium battery with a protective plate can prevent the battery from being over-discharged. Lithium batteries are hot, and even dangerous to burn and explode.

Among all 18,650 lithium-ion batteries, LiSOCl2 has the highest energy density and can last up to 15 to 20 years. This type of battery is particularly suitable for devices with small and relatively short supply currents. The ambient resistance of the battery is also good due to its long battery life and low self-discharge rate.

Two major reasons affect the service life of 18650 lithium batteries

Two major reasons affect the service life of 18650 lithium batteries

Two major reasons affect the service life of 18650 lithium batteries.

Factor 1: The influence of environmental factors at work.

The actual operating environment of the lithium battery will affect the number of battery cycles immediately: the charging temperature of the lithium battery is 0℃~45℃, and the discharging temperature of the lithium battery is -20℃~60℃; during the whole process of charging the lithium battery, do not overcharge , power loss and other conditions; whether it is over-discharge or over-charge, it will cause inevitable harm to the quality of lithium batteries. Naturally, in addition to operational errors in the operation of lithium batteries, such as short-circuit faults, the service life of lithium batteries is also reduced; for battery charging of lithium batteries, everyone should use a reliable lithium battery charging head to charge the battery. In order to better reduce the specific current and voltage between lithium batteries such as 18650 lithium batteries and the universal charger that are not stable, especially for lithium batteries that have just been charged, 30 minutes should be set aside to wait for the battery charging characteristics to stabilize before application, otherwise it will jeopardize battery performance.

Factor 2: Idle and unused factors are harmful.

If the digital technology and electronic equipment supporting the 18650 lithium battery is not in operation, the 18650 lithium battery should be removed from the instrument and equipment; for long-term storage of lithium batteries, the battery must be charged to 50%~60%, before storage. During the period, the lithium battery should be charged once every 1 to 3 months; for long-term storage of lithium batteries, the temperature range of 10 to 25° must be controlled; Place the rechargeable battery in a natural environment such as microwave heating and high pressure. The common problems in the application of several types of lithium batteries can usually be very good to increase the service life of rechargeable batteries. If the lithium battery is not applied standardly, it will actually cause great damage to the lithium battery, and it is difficult to ensure the service life of the lithium battery.

Will Lithium Polymer Batteries Explode

Will Lithium Polymer Batteries Explode

When used for long periods of time, lithium polymer batteries can experience catastrophic failure. These fires can result from thermal runaway, an exothermic reaction within the cell, which results in overheating and boiling of the pyrophoric liquid electrolyte. This process can cause the casing of the battery to explode, as it has in many cases in consumer electronic devices. But luckily, there are many safety features built into these batteries to help prevent this from happening.

One of the biggest dangers of lithium polymer batteries is the risk of fire. While lithium is not considered flammable, the anode material is, typically, graphite. However, the flammability of the battery’s electrolyte is comparable to that of gasoline. The solution for this potential hazard would be a non-flammable electrolyte, which would greatly reduce the risk of fire. Still, a large amount of heat is still required for a battery to catch fire.

While a lithium polymer battery can explode, it is unlikely that the ensuing fires will kill anyone. The main dangers of these batteries are the potential for short circuits, high temperatures, and improper storage. As a result, batteries must be tested regularly to ensure that they will not overheat and cause an accident. While some lithium polymer batteries can explode due to overcharging, most won’t.

While lithium polymer batteries may not explode, a common cause for them to fail is overcharging. This occurs when a high voltage is applied across the cells of the battery. For normal lithium polymer batteries, the charging voltage should be 4.2V or higher. Any higher will trigger a chemical reaction that will produce gas and heat. If the cell walls become swollen, the battery will eventually burst and cause an explosion.

In the past, some lithium polymer batteries were known to explode at high temperatures. Fortunately, they never exploded in any way. The battery’s packaging was not the only cause of the explosions, which were caused by faulty cells. The outer packaging of a lithium polymer battery can be deformed and shattered, but a full-charged battery can still experience a dangerous explosion.

Another cause of battery explosions in lithium polymer batteries is the improper handling of the batteries. It is important to follow proper procedures to avoid this problem. For example, if you’re storing the batteries in an area with hot weather, be sure to store them in an area where temperatures will be low enough for the batteries to last for an extended period of time. This prevents accidents in your home, and is crucial for ensuring the safety of your family and your home.