Today the demand for high-energy batteries is rapidly increasing. The main reason for this increasing demand is to provide long-term solutions for machines to run properly. The frontrunners in this race are Lithium batteries. So, let&#;s discuss how to buy a lithium battery. Moreover, we will discuss its applications in various industries. From smartphones to laptops, remote controllers to toys, digital media to electric vehicles, these are serving as energy storage systems. If you search the market to buy a lithium battery, you need to navigate that can be frustrating.

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In our comprehensive guide, we will explore all the aspects and quick search features of these versatile and durable batteries. These will not only help you in searching for good ones but also influence your buying decisions. 

Part 1. Considerable features when buying lithium-ion battery

You can not randomly buy a lithium battery. For this, there is no need for much knowledge of its considerable features. If you do, then it can be spam or useless with no results. We have come up with significant characteristics for you when buying lithium batteries. 

1. Compatibility To Device

Every lithium battery has compatibility and chemistry with a variety of devices. The most common and considerable types are

• Lithium-Ion (Li-ion) battery: These offer compelling energy density and are compatible with electric devices like vehicles and everyday consumer electronics.
• Lithium-polymer (LiPo) battery: These are highly flexible and lightweight batteries used in radio-controlled vehicles and drones.

2. Battery Voltage and Storing Capacity

Capacity is the energy-storing power of a battery, measured in milliampere-hours and ampere-hours. Voltage is the potential energy and output energy that a battery provides to devices. You need to buy a battery that fits your gadget and fulfills the requirements to make it work efficiently and correctly. If you choose a low voltage, it can slow the charging, and your appliance will take more time. Therefore, for optimal charging, a compatible battery is necessary.

3. Longevity And Durable Life Cycle

The batteries should have a long and robust charging and discharging life cycle. It effectively impacts the functionality and working of the device. The cycle depends on the various factors:

• Charging Rate: Batteries that have charging temperatures from 32° F to 114° F are preferable to choose.
• Discharging rate: The lowest discharging rate should be around -4° F and the highest should not exceed 130° F
• Quality and power: The current power range of lithium batteries must start from 10A and go above it. That high power makes them potent to hold the electrode circuit and maintain the quality.
• Battery Cycle Average: The high-quality batteries have a longer cycle that should cover 300 &#; 500 charging cycles. It will keep your battery working for up to 3 years, so you do not need to charge your machine repeatedly.

4. Protective Circuit

Considering the safety protections is essential before buying Lithium Batteries. These power units have an electrochemical system that can be exploited if mishandled. So, therefore, go for the cells that have a protective circuit. It will stop the electrical cycle after charging completion and prevent cells from overheating. Moreover, safety features include: Overcharging protection, Short circuit prevention, Thermal protection, Temperature controller, and Protective circuit

5. Environmental Factors

Batteries that use environmentally friendly materials from manufacturing to disposal are more sustainable for the atmosphere. Therefore, to keep it clean, use non-toxic power units with recycling substances and less harmful chemical substrates like sodium, cobalt, sulfur, and oxygen. The hard and toxic chemicals will make the surfaces, causing metal-erosion damage, and slowing down of battery connections.

6. Price And Affordability

While purchasing, you need to prioritize rechargeable lithium battery prices. You need to access high-quality batteries, more in performance, and offer a warranty at reasonable rates. Additionally, companies that manufacture high-end cells introduce their products with a bit more cost. But, make a decision that comprehends you a long-term benefit.

Part 2. Where to buy lithium batteries?

Lithium batteries are in every room using tools, whether you are going to use them in your electronic devices or run your office device, these are complimentary. So, knowing the significant properties of these energy cells is necessary. But if, the battery you bought is not working efficiently? So, the next thing that comes to mind that where to buy authentic batteries. Comprehending your search and providing you with the best solution, we suggest the places and ways to get good lithium batteries.

1. Authorized And Reputable Brands

You must buy Lithium Batteries from certified and top brands in the market with a reputed product approach. Ensuring the authenticity and warranty is crucial to avoid spam and false items. Therefore, when you search the renowned companies like LG, Tesla, Samsung, Panasonic, EVE Energy, etc, you will find that these companies are offering their customers extra services as a guarantee of authenticity. The services include after-sale services, return policies, authorized certificate stickers, and other technical support. So, approaching certified brands will be an ease of breath for you.

2. Fetch From The Online Market

The second choice is to find Lithium batteries in the online market. After the introduction of online marketing, people are expected to prefer to make purchases by sitting at home. But it would help if you were cautious while searching for good batteries. The market is full of fake and unreliable products that are usually cheap in quality and price. So, do not go without checking product reviews, the seller&#;s reputation, product ratings, and uncertified items. As it can cause you to feign cheap quality commodities.

3. Retailers Offering Customized Batteries

There are retailers in the market that offer customized and tailored lithium batteries. They are highly specialized and skilled in understanding customer demands and providing battery solutions. Search for the profound retailers and hire them to provide you with recommended and supported batteries.

Part 3. 5 Top manufacturers to buy lithium batteries

Here is a list of five top-grade manufacturers from where you can buy a lithium battery.

1. Tesla

   

A famous and top-rated battery service provider is Tesla. It was launched by an entrepreneur, Elon Musk, who revolutionized the market for automotive electrical cars with lithium batteries. The company is working on eco-friendly electric car productions that use less harmful batteries to avoid carbon-emitting systems. These highly powerful batteries serve as energy products for home battery servings and power packs for energy storage systems.
2. Panasonic

Panasonic is the largest contributor of lithium cells to Tesla. For decades, it has led the market with innovative, advanced, and high-quality batteries. Moreover, it has outstandingly focused on boosting high-performance batteries with long life cycles, high-density power, sustainability, and long-term battery solutions. Year after year, it has progressed battery technology with a wide range of compatible batteries for multiple electric gadgets.

3. Ufine Battery

Ufine Battery offers a wide range of options to buy a lithium battery. These may include lithium-ion batteries and lithium-polymer batteries. These batteries have a versatile nature. So, they come with inclusive features, such as high energy density, lightweight design, low self-discharge rate, and fast charging capabilities. Moreover, they also provide customization options for different battery voltages, capacities, and volumes. Compared to big brands, Ufine&#;s batteries are more flexible and more suitable for small and medium-sized enterprises.

4. Samsung SDI

Samsung SDI is a global brand famous for its extensive lithium battery production. It is a group of South Korean Conglomerate Samsung that delivers good-quality batteries for appliances like tablets, smartphones, vehicles, and other electrified devices. Throughout the decades, Samsung has maintained its batteries&#; eco-friendly, sustainable, and long-term properties.

5. LG Chem

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LG Chem is a prominent brand in the market and is profoundly renowned for its strong lithium battery production. The technology and material are advanced, sharp-edge cut, unique, safe, and tailored to meet the requirements of various devices. The company is committed to its users by seeking research and further development in their battery performance.

Part 4. Conclusion

Lithium batteries have revolutionized energy storage power for a wide range of devices. When buying a high-efficiency lithium battery, consider the chemistry, voltage, environmental impact, compatibility, and safety. Also, buy batteries from famous and trusted companies for sound investment and long-term usage, and align them according to your device&#;s demands. So, if you want your gadget to work optimally, get the right lithium battery.

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Gerald

Electronic Engineering Writer

Proven Technologies When Developing a Custom Battery Pack

By Anton Beck, Battery Product Manager
Epec Engineered Technologies

A lot of us probably do not spend much time thinking about the battery packs that we interact with on a regular basis; we are only concerned with whether or not they work. When they do function exactly as intended, it is important to understand that this result is the product of an incredible amount of time, care, hard work, and technology that all went into its development.

From battery chemistries to industry standards regarding enclosures to safety protections and beyond, here is everything you need to know about the proven technologies that suppliers rely on when developing custom battery packs (Figure 1) on a regular basis.

Figure 1: SolidWorks 3D rendering of custom battery pack with cells, BMS, and plastic enclosure.

The Development of a Battery Pack: Chemistries, Enclosures, and More

Battery Chemistries

At its core, a battery pack is made up of one or more electrochemical cells that are intended to store chemical energy to later be converted into electrical energy. This is called the battery's chemistry, and while there are certain industry standards that apply when working with such materials, the actual selection is usually based on the size of the battery and its eventual intended application.

One of those general battery standards is called IEC -1, for example, and it governs primary batteries. Last revised in , it was intended to standardize those batteries with respect to essential factors like dimensions, terminal configurations, markings, test methods, typical performance, certain environmental aspects, and more. When IEC -1 is used as a battery classification tool, it also becomes a helpful way to standardize those electrochemical systems inside the pack. It provides an overview of elements like electrodes, the electrolyte, nominal voltage, and maximum open circuit voltage.

All of this is important because it helps to make sure that batteries by various device manufacturers still work and perform in the exact same way, thus essentially making them interchangeable. So, while those industry standards do not necessarily dictate which type of battery chemistry is to be used one way or the other, they do make an impact with regards to what happens after that selection has been made.

A few of the other general battery industry standards include but are not limited to ones like:

• ANSI C18.1M:

  this refers to portable primary cells and batteries with an aqueous electrolyte.

• UL :

  this is concerned with the safety of both commercial and household battery packs with regards to testing procedures.

• USNEC Article 480:

  this provides an overview of the proper storage of batteries.

• ISO :

  this is a series of quality management system standards that go into more detail not about the battery packs themselves, but the processes used to create them.

• ISO ::

  this acts as a model for quality assurance not only in terms of design but also development, production, installation, and servicing of general battery packs.

All of this is particularly important when referring to the safety of these battery packs. Maybe the most famous example of this is lithium batteries - a topic that has seen much discussion over the last few decades. In , for example, one out of 200,000 lithium battery packs were shown to have a high likelihood of failure, leading to a recall of almost six million similar devices. The problem is that if microscopic metal particles come into contact with any other part of the battery's cell - something that is rare, but certainly not impossible - it could lead to a short circuit within the cell itself. At that point, the battery could overheat and may even start a fire, something that both the device manufacturers and their end users would no doubt want to avoid at all costs.

Because of this, most lithium batteries share similar methods of safety protection at the design level, although further adjustments can also be made depending on the specifics of the battery design itself. According to the experts at Battery University, most of the time battery pack manufacturers work to &#;limit the amount of active material needed to achieve a workable equilibrium of energy density and safety,&#; which goes a long way towards making the conditions that could cause a failure even more rare than they already are. Manufacturers also include various safety mechanisms within the cell and have taken to including an electronic protection circuit in the battery pack itself.

These three layers of protection all work together to help minimize the risk of a lithium battery failure as much as possible. That electronic protection circuit, as the name suggests, acts as a viable method to prevent high current surges. If an excessively high charge raises the internal cell pressure too high, a circuit interrupt device (CID) kicks into gear and safely vents controlled gas before something goes awry. If the surface temperature of the cell gets too hot (typically about 194 degrees Fahrenheit), a fuse cuts off the current flow to stop things from getting out of control.

When it comes to designing the battery pack in its finished form, there are a few different options that suppliers can choose from depending on their needs. This is particularly true when it comes to cell placement, with different options offering different benefits that may be necessary depending on the eventual application.

The linear or "ladder" battery pack configuration (Figure 2) is a popular one, where the cells are essentially arranged in a straight line. It is also possible to use multi-row cells, a "cubic" arrangement, and others. If the end use of the battery pack requires more current than a single cell can supply on its own, for example, suppliers may need to put the cells in parallel with one another. This may also be necessary if they attempt to increase the capacity, or if they want to give the battery pack a longer running time than average.

Figure 2: Diagram of a linear battery pack configuration.

Battery Enclosure

Designing the enclosures for a battery pack is also a straightforward process, but one where a lot of the elements are essentially dictated by choices made earlier in the development process. The design of the enclosure obviously varies depending on the components it needs to house. In other words, the function of the battery dictates the design of the enclosure and not the other way around (Figure 3). Keep in mind that an enclosure has to house more than just the cells themselves. You also must think about electronic circuits, interconnections, connectors, and those aforementioned protection devices. All these decisions need to be finalized before the enclosure can be designed.

Figure 3: Custom enclosure designed for the function of the battery pack.

All of this leads directly into the grade of plastic that is eventually chosen for the enclosure, something that is again dictated by both the way the battery is going to be used and the types of conditions that it's supposed to operate in. ABS plastic, for example, is a very inexpensive option, but it also becomes very brittle in extremely cold temperatures. This is why it's so critical to understand the type of environment that the battery pack will eventually be used in. Without that information, there are many, many important choices that you could wind up making incorrectly.

Additional Information About Battery Pack Development

Another one of the major factors that suppliers will have to concern themselves with is meeting the various safety approvals that are in play. This not only has to do with the design of the battery pack, but also the ways in which they will be transported.

In terms of the actual design, all batteries should be developed in a way that A) allows for a failure to occur without B) a catastrophic event taking place. Meaning that even if the battery fails, it doesn't catch fire or explode. While there is no universal standard in place to that end, there are a number of voluntary ones, including those developed with the active participation of the United States Consumer Product Safety Commission (CPSC). Many of these include safety standards that relate to the eventual application of the battery itself. ASTM F, for example, sets the standard consumer safety specification for batteries that will be used in baby monitors. IEEE includes a similar standard for rechargeable batteries meant for mobile devices like smartphones.

Before lithium batteries can be shipped, for example, they need to meet the requirements dictated by the United Nations Transportation Testing and the United States Department of Transport, along with the International Air Transport Association. This test, called the UN 38.3 test, looks at things like:

• Altitude simulations. Low pressure will be used to simulate unpressurized cargo holds at 45,000 feet, essentially looking at what will happen to a battery if it is shipped via airplanes.
• Thermal testing will be conducted by keeping batteries at -40 degrees Celsius for six hours, then at +75 degrees Celsius for another six hours.
• Shock testing will be used to simulate vibration during transportation at given G-forces, all relating to the way a battery of this specific size reacts.
• Overcharge tests will be conducted, where the battery will be charged at twice the recommended current for 24 consecutive hours. Note that this only applies to secondary batteries, not primary ones.

Summary

In terms of the actual materials that suppliers use when developing and constructing battery packs, this will again be based on what the battery has to do in the first place. Injection molded plastics are very common, for example, as they are often used to create battery packs with higher precisions. But generally, the elements are selected based on those that can provide the adequate level of protection with the least amount of material possible, thus reducing the weight, the size and the ultimate cost of the battery pack.

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