Lithium-ion Battery Pack Manufacturer

Basic structure analysis of lithium-ion battery pack:

Important materials: positive electrode, negative electrode, electrolyte, separator

Structure: round, square; lamination, winding

Form: polymer (flexible packaging), liquid lithium ion (steel shell) battery.

At present, the more commonly used lithium-ion battery pack materials are LiCoO₂, LiNiO2, and LiMn₂O₄. The most used material is lithium cobalt oxide, which has good cycle performance and is easy to manufacture. The disadvantage is that cobalt compounds are expensive.

Why choose lithium-ion battery pack?

  1. The energy ratio is relatively high. Lithium iron phosphate batteries have a high reserve density, which has reached 460-600Wh/kg, which is about 6-7 times that of lead-acid batteries.
  2. Long lifespan. the service life of a lithium iron phosphate battery pack can reach more than 6 years.
  3. The rated voltage is high (the single working voltage is 3.7V3.2V), which is convenient to form a battery power pack.
  4. Low self-discharge rate, which is one of the most prominent advantages of the battery.
  5. High and low temperature applicability, can be used at -20°C-60°C.

How to test lithium ion battery pack with multimeter?

Step 1: Put the rechargeable battery in its approved battery charger and let the device charge for a while.

Step 2: Turn on the multimeter and adjust the measuring knob to measure DC current, making sure to set the dial to at least measure the maximum number of voltages the battery can provide. If the setting on the multimeter matches the voltage provided by the battery, set the dial to measure the next higher voltage value.

For example, if there is a 3.7 volt battery and the meter has a 6 volt setting, set the dial to measure 6 volts.

Step 3: Touch the metal tip of the meter’s black probe lead to the negative (–) end or terminal of the battery, then touch the metal tip of the meter’s red probe lead to the positive (+) end or terminal of the battery. Observe the voltage reading on the multimeter display as you touch them to the battery.

If the voltage is significantly lower than what the battery should have when fully charged, the battery may be nearing the end of its useful number of charges.

12V lithium battery applicant

Lithium ion battery packs are mainly used to following applicants: 

  • 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.

How to charge lithium ion battery pack

  • Standard charging mode. Standard temperature 20±5℃ Charging battery consists of charging at a constant current rate of 0.2C until the battery voltage reach 4.2V .then battery be charged at constant voltage of 4.2V while tapering the charge current. Terminal charge until the charging current drops to 0.02C. Anyway, the total charge time for one cycle is not more than 8 hours.

  • Standard Discharge mode. Standard temperature 23±2℃ discharge to the cut-off voltage with 0.2C current.

  • Initial Capacity. The standard charge mode for charging, then the standard discharge mode to discharge, measured for the first time the battery capacity is the initial capacity.

lithium battery charging

How to wake a sleeping lithium ion battery pack?

Regarding the lithium-ion battery that has not been used for a long time, the voltage cannot be measured outside the lithium-ion battery with a multimeter, and it cannot be charged with a mobile phone or a universal charger. Many people may think that the battery is broken, in fact, the battery may not be damaged at this time, just enter the sleep mode. The voltage of the lithium-ion battery will gradually drop due to self-discharge.

When the voltage is lower than the minimum threshold voltage set by the protection board of the lithium-ion battery, the power output will be automatically cut off, and the lithium-ion battery will enter sleep mode.

No matter which method is used to activate the dormant lithium-ion battery, it cannot be turned on in a hurry. It is recommended to turn on the battery after charging for half an hour.


How to make a lithium ion battery pack?


To understand the real demands of the lithium-ion battery pack, 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 Custom Lithium-ion 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 “”