Custom Battery Pack

With 15+ year’s experience, we manufacture and produce different lithium-ion battery packs for different applicants. They can be made by 18650, 21700, 26650 battery packs. We work on cell selection, circuit design, battery pack, even battery charger.

Hlcbattery banner

What's customize battery pack feature?

  • Because of different applicants’ requests, HLC can customize different series and parallels for different battery packs. It can be different voltage, capacity, size, wire & connector, etc. All are based on customer demand.

  • Custom lithium-ion batteries can choose different cores according to their needs, and the battery performance, service life, safety, and other characteristics are very different aspects.

  • The voltage range that the customized lithium-ion battery equipment can withstand. The customized lithium-ion battery can arrange the voltage according to your own requirements, and you can flexibly use the voltage of the customized lithium-ion battery. Therefore, ensure that the customized lithium-ion battery device can withstand the corresponding voltage value.

  • Custom lithium-ion batteries can change the performance, volume, function, and other characteristics of lithium-ion batteries on the basis of the original batteries to meet the different needs of customers regarding batteries.
custom battery pack

How is our technical support service?

  • The technical center covers professional techniques of cell selection, industrial design, electronic, power supply, structure, process, software(BMS, balanced). It has been widely used and proved the whole solution is outstanding.
  • Cell selection: Samsung, LG, Lishen, Roofer, and other 18650 cell suppliers have established good cooperative relations.
  • PCM/BMS: Multi-protection intelligent BMS management system, Automatic communication function, and SOC indication.
  • Structural design: High structural strength, light, and convenience.
  • Charger selection: recommend the best charger option based on finalized battery.
Technical Support

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
    UL 2054
    Air Transportation Report
Supplier Assessment

Chect our 18650 custom battery pack

Below are some of our 18650 battery pack products. We are producing different 18650 series and parallels for different battery packs.

How to work with us

Custom 18650 Battery Pack Process


Kindly let us know the these info, such as battery voltage, capacity, charge & discharge current rate, work temperature, max size.


Once we received basic requirements, we will provide a best solution with full datasheet. It is our core paper file to support future works.


When datasheet is approved from customer, we will make samples of battery packs based on customer need. Also provide at least 1 cycle curve.


After customer testing and evaluating, we shall start all requested certificates, which includes CE, IEC62133, PSE, KC, UN38.3.

Mass Production

We will start mass production schedules according to customer PO. All are strictly under control of QC team. Quality is our soul and roof.

Check Out Our the 18650 Cell Specs

Manufactured to National Standard GB/T18287-2020

  • All are produced at 5S & dust-free plant. Our daily production is up to 5K pieces. Below is our custom lithium battery several images.
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 Battery Pack?

You will receive the charge & discharge curve

  • 12S2P Battery Pack: 5A charge & 10A discharge curve test as a sample for your review.
Lithium battery test curve

Time - voltage & current

Lithium battery test performance

Capacity - voltage

Lithium battery test curve

Time - capacity & specific capacity

Lithium battery test curve

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 “”