Manufacturers of Lithium Polymer Batteries

  • Manufacture 3.7V, 7.4V, 11.1V lithium polymer batteries since 2010.
  • Provide DW01, G3J, 8261DAI IC chips for protection.
  • Capacity, Size/dimension can be customized.
  • PVC wrap, ABS, PC housing can be chosen.
  • Protect short-circuit, over-current, over-voltage.
Manufacturers of Lithium Polymer Batteries

Why choose lithium polymer batteries?

When we talk about lithium-ion batteries, we mean that at least one of these three components is made of a polymer material. Polymer lithium-ion batteries have no excess electrolyte solution and are therefore more stable than conventional batteries. The polymer lithium-ion battery is light in weight, ultra-thin, good instability and is strong in energy storage capacity.

Polymer lithium-ion batteries have many excellent properties and can be made into various shapes to meet the shape requirements of different products. These batteries are usually packaged in aluminum and plastic, so they can be detected even if there is a problem inside, and for safety reasons, they can swell rather than explode.

Electrolytes, on the one hand, are good at separating the positive and negative electrodes of a battery, just like membranes, and on the other hand, they can transfer ions between the positive and negative electrodes. Polymer electrolytes have good electrical conductivity, and their manufacturing materials are light and flexible, which can well meet the development direction of the future electronics industry.

What are application of lithium polymer batteries?

As the mainstream of energy batteries in modern society, the application fields of lithium batteries can be described as extremely wide, and in the larger direction, it involves civil and military use. There are many specific ones, such as consumer products, digital products, power products, medical and security. Power, consumer, digital, health care, security, electric heating, etc.


lithium-ion polymer batteries are commonly used in a broad spectrum of applications, including:

Electric cars, mobile phones, digital cameras, handheld electrocardiographs, fire lights, thermal clothing, electronic recipes, electric bicycles, notebooks, digital cameras, multi-parameter monitors, security cameras, heating clothing, electric shavers, electric motorcycles, tablets Computers, Bluetooth headsets, portable ultrasound diagnostic instruments, POS machines, hand warmers, wireless chargers, computers, energy storage systems, netbooks, wireless mice, portable oximeters, wireless calling, heating insoles, backup power for military equipment, Bluetooth keyboards, Portable fetal sound monitor, wireless intercom doorbell, warm gloves, oil well detection UPS, power tools, GPS, vehicle hands-free, laser therapy device, access control system, searchlight, model aircraft e-book, LED, flashlight, wireless electronic medical treatment, fingerprint recognition, LED display, wireless speaker, endoscope, RFID monitoring, thermal printing, warning light, anti-theft attendance machine, loudspeaker, foot massage, massage mobile backup power, physiotherapy products.

Lithium polymer battery technical parameters

Lithium polymer battery, English LI-polymer, referred to as LIPO, is a new type of battery with high energy density and large discharge current. At the same time, lithium batteries are relatively fragile to use, and are extremely sensitive to overcharge and overdischarge. You should be familiar with their performance during use. The charging and discharging process of lithium polymer batteries is the process of intercalation and deintercalation of lithium ions. During charging, lithium ions are detached from the negative electrode and inserted into the positive electrode, while during discharge, lithium ions are separated from the positive electrode and inserted into the negative electrode.

Once the lithium polymer battery is discharged and the voltage is too low or the charging voltage is too high, the structure of the positive and negative electrodes will collapse, resulting in irreversible damage to the lithium polymer battery.

Discharge cut-off voltage 2.75V
The minimum voltage for safe discharge of the battery cell. Continuing to discharge below this voltage will cause damage to the battery performance.

Charge cut-off voltage 4.20V

The highest voltage for safe charging of the battery cell. Continuing to charge above this voltage will damage the battery performance.

Nominal voltage 3.7V

The standard nominal voltage of the cell is also the parameter we use when calculating the voltage.

Storage voltage 3.85V

Suitable for long-term storage voltage, lithium battery has the characteristics of low self-discharge.

S number

When we call the voltage of the battery, we usually call it S, and S is the number of batteries connected in series. For example, a 12S lithium battery actually means that 12 cells are connected in series. The standard voltage of a single lithium battery is 3.7V. Its voltage is 3.7*12=44.4V.

S refers to the number of batteries in series.

P number

P refers to the number of batteries connected in parallel, such as 3S1P, which means that the batteries are not connected in parallel; and 3S2P, in fact, the battery is composed of 6 batteries connected in series.

Internal resistance

Ohmic internal resistance mainly refers to the composition of electrode material, electrolyte, diaphragm resistance and contact resistance of various parts, which is related to the size, structure and assembly of the battery. The internal resistance of the battery is very small, and we generally define it in units of milliohms. The smaller the internal resistance, the stronger the discharge capacity of the battery, and the weaker the discharge capacity of the battery with the larger the internal resistance.

C number

battery discharge rate


The capacity of the battery is expressed in Mah or Ah, which means that the battery continues to discharge at a certain current for 1 hour.

Quality Products

  • All our lithium polymer batteries conform to Li-ion battery national standard GB31241-2014 “Safety Requirements for Lithium-ion Cells and Battery Packs for Portable Electronic Products”.
  • Each battery meets the demand of Rohs2.0 REACH requirements.
  • We will help you to get all the necessary certificates, some of the commonly known ones are listed below:
    UN 38.3
    UL1642(if needed)
    IEC 62133
    Air & Sea Transportation Report
3D illustration of a rubber stamp mark with thumb up and text high quality over paper background

Lithium Polymer Battery Manufacture Process


To understand the real demands of the lithium polymer battery, you need to provide the lithium battery size, electrical performance requirements, output requirements, and functional requirements.

Quick Response

Evaluate a solution and quote the known parameters provided by the customer, also provide full datasheet for reference.


After the customer’s approval, we will start to make samples for polymer batteries, and provide charging and discharging cycle curve and data.

Sample Test

Assist and track customer test results, as well as customer’s overall equipment operation effect.

Certificate Proceed

We will discuss with customer certificate works based on the final country and applicate requests. It may be MSDS, UN38.3, IEC62133, KC, PSE, etc.

Mass Production

Develop process documents and BOM sheet, purchase materials, arrange staff production, quality personnel monitoring, and random inspection, and package and shipment.

Manufactured to National Standard GB31241-2014 "Safety Requirements for Lithium-ion Cells and Battery Packs for Portable Electronic Products".

  • All are producing at 5S & dust free plant. Our daily production is up to 200K pieces.
automatic sorting machines
18650 battery sorting
our workers

Chemical Test

Automatic Welding

Final Testing

  • Cell Formation & Grading
  • Temp & Hum Controller
  • Short-circuit Test
  • Salt Spray Test
  • Molding System
  • Automatic Welding
  • Automatic Welding
  • Final Test
  • Packing

Need Any Customized Lithium Polymer Battery?

You will receive the charge & discharge curve

  • 11.1V Polymer Battery Pack, It is a 0.5C rate charge & 0.5C discharge curve test as a sample for your review.

Time - voltage & current

Capacity - voltage

Time - capacity & specific capacity

Cycle number-charge capacity & discharge capacity & charge specific capacity & discharge specific capacity

Product & Factory Certificates

  • All batteries are require related certification apart from lab testing, such as voltage, current measure, and each countries have different certificate demand.
  • Clients are welcome to have any 3rd party certification company verify our batteries or the factory documents.
  • We have been working with UL, TUV, SGS certication lab. All batteries approved by UL1642, UN38.3, IEC62133, PSE, KC, CB, MSDS certificate or report.
battery certificate

Write To Us

Why choose us, HLC?

  • Safety & Reliability
    All Battery cells will pass rigorous testing. All Battery Packs are Certified and are compliant with regulatory and safety requirements. 
  • Certifications
    CE, ROHS, FCC certification and high reliability. UL1642, UL2054, MSDS, UN38.3, IEC 62133, KC, PSE, BIS certifications and more available.
  • Customer support
    Quick turn-around on battery assemblies(30-35 Days). 24*7 services are available.

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “”