Lithium Polymer Battery Manufacturer

  • Custom 3.7V lithium battery since 2010
  • Provide DW01, DW01, G3J, 8261DAI IC chips.
  • Capacity, Size/dimension can be customized.
  • PVC wrap, ABS, PC housing can be chosen.
  • Short-circuit, over-current, over-voltage protection.
lithium polymer battery

Why choose lithium polymer battery?

  1. High working voltage, nominal voltage 3.7V.
  2. High energy density. Approximately 6-7 times of lead-acid batteries.
  3. Low self-discharge rate
  4. No memory effect
  5. Support size customization
  6. Custom capacity from 100Ah to 3000Ah.
  7. Lightweight. the same volume of lead-acid battery products is about 1/5
  8. Long lifespan over 500 cycles
  9. Compared with traditional battery technology, lithium-ion batteries charge faster and last longer, and higher power density can achieve longer battery life while being lighter.

What are application of lithium pouch batteries?

Most of the current polymer batteries are soft pack batteries, using aluminum plastic film as the outer shell. When the organic electrolyte is used inside, the liquid will not explode even if the liquid is hot. Because the aluminum plastic film polymer battery adopts solid or gel state without leakage, but expansion. In terms of shaping, polymer batteries can be thinner, arbitrarily shaped and arbitrarily shaped. Therefore, polymer lithium batteries are widely welcomed by various manufacturers.

3.7V lithium battery applicant

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

  • Headlamp, LED headlight, head light, flashlight, mining light, outdoor light.
  • Neck massager, shoulder massager, smart back massage, muscle vibration machine.
  • CCTV camera, video camera, digital camera, surveillance system, analog camera.
  • POS machine, POS terminal, handheld payment system, payment terminal.
  • Bluetooth speaker, headphone, BT speaker, outdoor speaker, portable speaker
  • Electric breast pump, baby feeding device, breast feeding pump.

How is our technical support service?

  • The technical center covers professional techniques of cell production, structure design, PCM solder, and final battery testing. It has been widely used and proved the whole solution is outstanding.
  • Cell production: From LiCoO₂, graphite, electrolyte to other components to mixing, film coating, assembly, and formation a series of steps.
  • PCM: Short-circuit protect, over-current protect, and over-voltage protect.
  • Structural design: High structural strength, light, and convenience.
  • Final battery testing. Mainly used to detect over current, voltage, capacity, internal resistance, charging and discharging temperature, battery cycle life, and give a graph.

Quality Products

  • Our 18650 lithium battery conforms to Li-ion battery national standard GB/T18287/2020.
  • 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
    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 GB/T18287-2020

  • All are producing at 5S & dust free plant. Our daily production is up to 10K 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. UL 1642, UL 2054, MSDS, UN 38.3, 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 “”