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Full-Service Lithium Ion Batteries Suppliers

KET is a full-service lithium ion batteries supplier with complete design and engineering capabilities.

Our services include Li-ion battery cell wholesale, custom Li-ion battery packs, etc. And our product certification is complete, most of the standard products have passed CE, FCC, ROHS, MSDS, UN38.3, etc.

We currently have 20 battery-related engineers, including electronic engineers, structural companies, etc. KET has enough R&D capabilities to provide you with one-stop customization services for lithium-ion batteries.

At the same time, we have long-term cooperation with global famous companies (LG, Samsung, CALT, EVE, etc.), so we can guarantee a stable and price-competitive supply of battery cells.
Full-Service Lithium Ion Batteries Suppliers
Strict Quality Control for Your Custom Lithium Ion Batteries

Strict Quality Control for Your Custom Lithium Ion Batteries

KET use only the highest quality materials and components to ensure that our lithium ion batteries are built to last.

Our company's equipment includes a high and low temperature test box, an automatic electric battery cell sorting machine, a protection board tester, a charge and discharge aging instrument, and an overcharge and shock tester, which allows us to ensure that our lithium ion batteries meet the highest standards of quality and reliability.

We have strict testing process in place before shipment, including charge/discharge test, core capacity division, protection board test, aging test, high and low temperature test, vibration test, and incoming inspection.

Additionally, our welders, who all have at least 5 years of welding experience, carefully protect the insulation of the lithium ion batteries and ensure the quality of the welding.

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KET's R&D Capabilities

KET attaches great importance to intellectual property rights, so that the company's achievements in product development will not be subject to problems with intellectual property rights, and has obtained 5 appearance patents and 2 utility model patents in the field of lithium batteries.

- A kind of lithium battery that is easy to disassemble (utility model)
- A kind of lithium battery with easy wiring (utility model)
- Battery case (appearance patent)
- Li-ion battery holder (4S8P) (appearance patent)
- Lithium battery holder (4S8P) (appearance patent)
- Lithium battery holder (triangle) (appearance patent)
- Triangular lithium battery case (appearance patent)
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KET's R&D Capabilities

Wholesale Lithium Ion Battery And Custom Lithium Ion Battery Pack for Any Industry

Application of Custom Lithium Ion Battery
As a leading lithium ion battery factory, we have provided lithium-ion battery pack solutions to more than 500 customers, including RV lithium ion batteries, ATV lithium ion batteries, ebike lithium ion batteries, etc.

What Is The OEM Lithium Ion Battery Customized Process?

Custom lifepo4 battery

Note: Due to different custom requirements there will be different MOQ requirements, while the cost of raw materials for batteries has fluctuated a lot recently. So please contact us in time and get the latest lithium ion battery quotes.

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What Is Your Price of Lithium Ion Batteries for Sale?

Due to the recent huge fluctuation of battery raw material price, we can only give you real-time quotation, generally 1-3 days price valid. We only do lithium ion rechargeable battery bulk order. Please contact our sales to get the latest quotation.

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What Is a Lithium Ion Battery?


A lithium-ion battery is a type of rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging. Lithium-ion batteries have a high energy density, no memory effect, and low self-discharge, making them useful in portable electronics and electric vehicles. They have a limited number of charge and discharge cycles.

Lithium-ion batteries have several advantages over other types of batteries:

1. High energy density: Lithium-ion batteries have a higher energy density than other rechargeable batteries. This means they can store more energy in the same amount of space, making them ideal for use in portable electronic devices such as smartphones and laptops.

2. Lightweight: Lithium-ion batteries are lightweight, which makes them ideal for use in portable devices. They are also ideal for use in electric vehicles, where reducing weight is essential for improving fuel efficiency and range.

3. Low self-discharge rate: Lithium-ion batteries have a low self-discharge rate, which means they can retain their charge for longer periods of time without needing to be recharged. This makes them ideal for use in devices that are not used frequently, such as emergency backup power supplies.

4. Fast charging: Lithium-ion batteries can be charged quickly, which means they can be recharged in a shorter amount of time compared to other types of batteries.

5. Longer lifespan: Lithium-ion batteries have a longer lifespan compared to other types of batteries. They can be recharged many times before their performance begins to degrade, making them a cost-effective option over the long term.

6. Environmental friendliness: Lithium-ion batteries are environmentally friendly because they do not contain toxic chemicals such as lead and cadmium, which can harm the environment if not disposed of properly. Additionally, they can be recycled, reducing waste and conserving resources.

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Appliacation of Lithium-Ion Batteries

Lithium-ion batteries (Li-ion batteries) are rechargeable batteries that have become ubiquitous in modern electronics due to their high energy density, low self-discharge rate, and long cycle life. Here are some common applications of Li-ion batteries:



1. Portable electronics: Lithium-ion batteries are commonly used in portable electronic devices such as smartphones, laptops, tablets, and cameras. These devices require a lightweight, compact, and long-lasting power source, and Li-ion batteries are the perfect fit for this application.

2. Electric vehicles: Lithium-ion batteries are a critical component of electric vehicles (EVs). They provide the power to drive the electric motor and offer a longer range than other types of batteries. With the increasing demand for electric cars, the use of Li-ion batteries in this application is expected to grow rapidly.

3. Energy storage: Lithium-ion batteries are also used for energy storage in homes and businesses. They can store excess energy generated by solar panels and wind turbines and release it when needed. This helps reduce reliance on the grid and can also save money on energy bills.

4. Aerospace: Lithium-ion batteries are commonly used in aerospace applications due to their high energy density and lightweight. They are used in satellites, spacecraft, and other aerospace applications.

5. Medical devices: Lithium-ion batteries are commonly used in medical devices such as defibrillators, pacemakers, and insulin pumps. These devices require a reliable and long-lasting power source, and Li-ion batteries fit the bill.

6. Power tools: Lithium-ion batteries are commonly used in power tools such as drills, saws, and sanders. They provide the power needed for these tools while also being lightweight and easy to handle.

Lithium-ion batteries have become an essential part of modern life and are used in a wide range of applications.

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FAQ

Can a lithium battery explode when not in use?
Lithium batteries, like any other batteries, can be potentially dangerous if they are damaged, improperly used or stored, or are past their expiration date. However, under normal conditions, lithium batteries do not typically explode when not in use.

There are some situations where lithium batteries can become dangerous. One example is if the battery is overcharged, which can cause the electrolyte to overheat and boil, potentially leading to a fire or explosion. Also, if a lithium battery is punctured or crushed, the lithium metal inside can react with the electrolyte, leading to a fire.

It's also important to store lithium batteries properly, in a cool, dry place, and away from any heat sources or potential physical damage. Additionally, it's important to use the right type of battery charger and not to use a damaged or counterfeit charger.

It's worth noting that while the chance of lithium batteries to explode is relatively low, it's still important to handle and store them with care, as well as checking the batteries' expiration date before use.
How to fix a lithium ion battery that won't charge?
There are several things you can try to fix a lithium-ion battery that won't charge:

1.Check the charging cable and port for any damage or debris. Clean the port and try a different cable if necessary.

2.Make sure the device is not in power-saving mode or "Airplane" mode, which can prevent it from charging.

3.Try charging the device with a different power source, such as a different wall adapter or a computer USB port.

4.Let the device cool down if it's hot to the touch, as overheating can prevent charging.

5.Try a factory reset or restore on the device to see if that resolves the issue.

If none of these steps work, it may be a problem with the battery itself and it may need to be replaced.
It is always recommended to refer to the manufacturer's guide or a professional to fix the battery issue.
How to charge lithium ion battery without charger?
It is possible to charge a lithium-ion battery without a charger, but it is not recommended. The most common method is by using a USB cable and a device that has a USB port, such as a computer or a USB wall adapter.

Here are the steps to charge a lithium-ion battery without a charger:

1.Make sure the device is powered off.

2.Connect the device to the USB cable.

3.Connect the USB cable to a USB port on a computer or a USB wall adapter.

4.Wait for the battery to charge.

However, charging a lithium-ion battery without a charger can be dangerous and can potentially damage the battery or the device if not done correctly. It is important to make sure that the voltage and current from the USB port match the specifications of the battery.

It is always recommended to use the charger that comes with the device or a charger with the correct specifications for the battery to avoid any damage.
How to tell if a lithium ion battery is bad?
There are several signs that can indicate a lithium-ion battery is bad:

1.The device will not turn on or hold a charge: If the battery is no longer able to hold a charge, it may be bad and need to be replaced.

2.The device only works when plugged in: If the device can only operate when it is plugged in, it could indicate a problem with the battery.

3.The battery swells or leaks: Swelling or leakage is a sign of a damaged battery and it should be removed from the device and replaced immediately.

4.Battery drains quickly: If the battery drains quickly even when the device is not in use, it may be a sign that the battery is losing its ability to hold a charge.

5.The device overheats: Overheating is a sign of a battery that is not functioning properly.

It's important to note that some of these symptoms can also be caused by other factors such as software issue, faulty charging cable or incorrect usage. If you suspect that your battery is bad, it's recommended to take your device to a professional or the manufacturer for a diagnosis.
What is your MOQ of lithium ion batteries?
If it is our existing standard product, there is no moq requirement.
If it is a custom product, there is a MOQ requirement. However, the MOQ varies from material to material and you can contact us for specific information.
What is the difference between a lithium battery and a lithium-ion battery?
A lithium battery is a primary battery that contains lithium as the primary component of the cathode. These batteries are not rechargeable and are typically used in applications that require a high energy density, such as portable electronic devices.

A lithium-ion battery, on the other hand, is a rechargeable battery that uses lithium ions as the primary component of the cathode. These batteries have a higher energy density than lithium batteries and are typically used in applications that require a long-lasting power source, such as electric vehicles and smartphones. The main difference between the two is that lithium batteries are primary batteries while lithium-ion batteries are rechargeable batteries.
What will You Do if we got damaged products when arrive?
If the batteries are damaged upon delivery, we will replace them at our cost. No charges will be made on your part if you show us images & video of the damage.
How can we pay?
You can pay via T/T, Paypal.
How to ship your custom lithium ion batteries?
The logistics companies we work with are strong. Currently, depending on your destination and order, we are able to provide options such as air freight, sea freight, express delivery, rail transport and trucking.
Can you offer chargers of lithium ion batteries?
We do not provide chargers. However, if you have a need for a charger you can contact our sales to assist in purchasing on your behalf.
What is the warranty of lithium ion batteries battery packs?
The warranty of our battery packs is one year. If you become our VIP, you can get extra 6 months.
Can you offer the certifications for our lithium ion batteries packs?
We make some regular battery packs certificates every year. But most of our battery packs are customized for you. And we can help you to get the certification for your customized battery packs.

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