Li ion 18650 Battery Manufacturer

Shenzhen HLC Battery Technology Co., Ltd. was established in 2014. It is a national high-tech enterprise integrating independent research and development, production and sales of 18650 lithium-ion battery modules. It has been focusing on lithium battery customization for 8 years.

Since its establishment, HLC has always been committed to serving the global users of power batteries, energy storage lithium batteries, industrial lithium batteries, and consumer 3C portable power users. After 8 years of development, it is now It has grown into the world’s leading manufacturer of customized solutions and products for lithium batteries.

custom lithium battery

What's our features of our 18650 Li ion battery pack?

High performance; preferred brand batteries, original imported batteries or domestic first-line brand batteries.

High security; Automotive-grade batteries, in line with GB/T31485-2015 standards, good stability of lithium batteries.

Long life; The normal cycle life of HLC lithium battery can reach more than 500 times.

Flexible customization; Adopt the Japanese “lean production” method to meet the “Small batch, multi-variety” order requirements.

Our 18650 li ion battery pack portfolio

18650 li ion battery one-stop solution

Provide customized solutions to meet the needs of customers with different voltages, capacities, sizes and appearances

12V lithium battery applicant

18650 lithium-ion battery packs are commonly used in a broad spectrum of applications, including:

  • Street lights, high mast lights, garden lights, solar street light, security lights.
  • Medical devices, physical therapy equipments, nebulizer, scraping apparatus, blood pressure monitor.
  • GPS, Navigation device, GPS tracker, pet tracker.
  • CCTV camera, video camera, digital camera, network camera, surveillance system, analog camera.
  • Fascia gun, massage gun, muscle massage tool.
  • Jumpstarter, emergency tool, car portable starting device.

4 reasons to choose HLC Battery

1. Eight years of experience in the custom production of lithium batteries.

HLC brings together a group of senior industry teams and practical technical elites for more than ten years, focusing on providing users with customized lithium battery solutions and products, and has accumulated rich experience in in-depth special customized research and development for users with special environments, special performance and special requirements.

The products are developed and produced according to IEC61960, IEC62133, IEEE-1725, UL2054, UL1642 and other standards, and have established long-term cooperation and exchanges with major testing centers at home and abroad, and the products can meet the certification standards.

2. Professional production technical team. Guarantee the lead time.

We have technical backbones and a strong technical team with many years of industry technical experience. From designing samples to producing finished products, we have a strict quality inspection system to ensure the quality of each product.

Professional production equipment ensures excellent, stable and effective development and technological innovation of products. The HLC technology center includes professional technical categories such as industrial design, electronics, structure, software, electrochemistry, power supply, process, measurement and control, signal processing and instrumentation. The technical team has many senior consultants from the battery industry.

3. Tailor-made customized delivery as fast as 7 days.

HLC’s customized lithium battery solutions and products can meet the ever-changing personalized and diversified needs of users. The products are widely used in military, medical, financial, communications, security, transportation, photovoltaic energy storage and 3C consumer electronics and other fields.

With excellent quality and high-quality service, it has been well received by customers and is a trusted partner of many enterprises. It has served more than 100 enterprises and accumulated rich industry experience.

4. Provide a series of pre-sale, middle and after-sale services.

We respect every penny of our customers and provide thoughtful and efficient after-sales service to protect the interests of our customers. 24-hour online consultation service, 1-hour quick after-sales response mechanism, and timely handling of customer problems.

Professional after-sales service team, caring service, can solve problems for you attentively; special delivery vehicles are on call at any time, free door-to-door delivery, and integrated tracking of goods throughout the whole process, allowing customers to experience worry-free pre-sale, in-sale and after-sale services.

Lithium battery manufacturing process

High quality comes from high standards, not letting go of any detail

Cell selection

Use imported high-quality batteries

PCBA board and housing material

Use Japan Seiko IC chip

Incoming inspection

To ensure that the material is qualified before production

Semi-finished product process and test

Spot welding of cells

Finished product assembly and inspect

Combining battery pack with PBCA

Finished product full inspect aging

Charge and discharge tests on finished products

Finished product test and package

for aged finished products

Finished product storage QQC

Inventory after re-inspection

Quality Products

  • Our 18650 lithium-ion battery pack conforms to Li-ion battery national standard GB/T18287/2020.
  • Each battery meets the demand of Rohs2.0 REACH requirements
  • With ZERO complaint principle to proceed all manufacturer works.
  • We will help you to get all the necessary certificates, some of the commonly known ones are listed below:
    UN 38.3
    IEC 62133
    UL 2054
    Air & Sea Transportation Report
3D illustration of a rubber stamp mark with thumb up and text high quality over paper background

18650 Battery Pack Manufacture Process


To understand the real demands of the lithium-ion battery pack design, you need to provide the lithium battery size, electrical performance requirements, output requirements, and functional information.

Quick Response

Evaluate a solution and quote the known parameters provided by the customer, also provide full datasheet for reference. We will consider the cell selection, circuit and structure design to final assembly.


After the customer’s approval, we will start to make samples for the lithium-ion battery pack, and provide charging and discharging cycle curve and data.

Sample Test

Before delivering out, we definitely do battery pack aging 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 18650 Battery Pack?

You will receive the charge & discharge curve

  • 12S2P Battery Pack, It is a 5A charge & 10A 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(10-20 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 “”