Custom 18650 Battery Pack

  • Custom different 18650 battery packs, 7.4V, 11.1V, 14.8V, 24V, 36V, 48V with different capacities.
  • PCM/BMS customized available.
  • Provide RS485, RS232, CAN BMS Protocols optional.
  • Capacity, Size/dimension can be customized.
  • PVC wrap, ABS, Metal housing can be chosen.
  • Short-circuit, over-current, over-voltage protection.
Custom 18650 Battery Pack

Why choose custom 18650 battery packs?

  1. Long lifespan. The 18650 lithium battery has a long life, and the cycle life can reach more than 500 times in normal use.
  2. High safety performance 18650 lithium battery has high safety performance, non-explosive, non-flammable; non-toxic, non-polluting.
  3. High voltage 18650 lithium battery voltage is generally 3.6V.
  4. Can be combined in series or parallel to form a 18650 lithium battery pack.
  5. There is no memory effect. It is not necessary to empty the remaining power before charging, which is convenient to use.

What are applications of custom 18650 battery pack?

Because lithium-ion batteries are the preferred source of portable electrochemical energy storage, improving their cost and performance can greatly expand their application range and make it possible to rely on new technologies for energy storage. So far, a large amount of research on lithium-ion batteries has been in electrode materials. Electrodes with higher rate capacity, higher charge capacity, and (for the cathode) sufficiently high voltage can increase the energy and power density of lithium batteries and make them smaller and cheaper.

custom 18650 battery pack applicant

Lithium-ion batteries have obvious basic advantages and decades of research, making them develop into today’s batteries with high energy density, high cycle life, and high efficiency. Its main application areas are as follows:

  • electric vehicle, electric car, new energy cars.
  • electric bicycle, Ebike, powerful bicycle, electric road bike.
  • powerful tools, cordless battery power tools, electric tool box.
  • wireless doorbell, ring doorbell, wifi doorbell, video doorbell.
  • lawnmower, cordless lawn mower, auto mower robotic.
  • powerful military device, hunting telescope, digital zoom, shooting device.

How to charge 18650 battery pack?

  • High-voltage charging: This charging method does not have a special control circuit, and directly uses a 5V power head to charge the battery with a protection board, which is completely dependent on the high-voltage limit of the protection board.
  • Constant voltage charging: This method is similar to the previous one. The constant voltage is actually a voltage limit. Set a relatively accurate maximum voltage, and then charge to that voltage. If it is less than 4.2V, it will never stop. People in the world call it silly charging. If the cut-off voltage of the device is very accurate, it is safer if it is too low. If it is too high, you have to rely on the protection board. As for the bare cell, please ask for more blessings.
  • Constant current charging: This method is still derived from the previous and previous circuits, but the maximum charging current is limited. Constant current and constant voltage are actually current limiting and voltage limiting. The son of a stupid charger is still a fool.
lithium battery charging

Quality Products

  • Our 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

How to 18650 custom battery pack


To understand the real demands of the 18650 battery packs, 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 custom samples for the 18650 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.  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 “”