Li-ion Battery 18650 Manufacturers

  • 8 advanced engineer teams to ensure battery packs are durable and reliable.
  • ISO standard working plant to ensure all li-ion battery acks good performance.
  • Provide RS485, RS232, CAN BMS Protocols optional.
  • Worked with US, EU, Japan, Korean markets for many years.
  • Custom 12V 24V 36V 72V lithium-ion battery packs.
18650 Battery Pack Design

18650 Li-ion Battery Features

  • High capacity from 1200mAh to 3500mAh.
  • Long lifespan. up to 500 cycles.
  • Pretty safety.
  • High nominal voltage 3.7V.
  • No memory.
  • Small resistance.
  • Can be series and parallels for the battery pack.
  • Wide range of use


18650 Battery Application

18650 battery pack application

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.

Need Any Customized 18650 Battery Pack?

Why Buy From us

Top Quality Cell

Small Order Acceptable

OEM/ODM Service

We have several cells production lines and we have worked with 18650 cell brand factories, such as Samsung, Panasonic, Sanyo, We’ll evaluate which cell brand is suitable for your end devices. In that way, you will get a good price and quality battery.

With no MOQ limit, you can analyze and test your innovation ideas before they come to mass production. We help you to monitor and control your risks, we work together with you as a partner to meet the new market trend for lithium battery.

8 years OEM/ODM experience for more than many clients from the US and almost all over Europe, We can custom different series and parallel of 18650 battery packs based on your demand. We will sign a Non-Disclosure Agreement with you if needed.

Free Shipping Arrangement

100+ Customer

Great team

We will arrange the shipment and all safety and customs document for you, all free of charges, Doc including MSDS, UN38.3, air & sea transportation report. We will also provide free syndrome of the dangerous package for big energy battery set.

Quality is the roof of our factory. We are responsible for customers, and we also take consideration into our brand.

We have around 10 sales team working closely with 6 technical people to offer fast email response in less than 24 hours. We will consider the mass production, costs, supply chain, lead time and others aspects.

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

Our Happy Clients From 10 Countries

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. 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 “”