Custom Lipo Battery Manufacturer

  • Custom lipo battery since 2010.
  • PCM(G3J, DAA, DW01 IC chip) customized available, 
  • 500 cycles lifespan.
  • Capacity, Size/dimension can be customized.
  • PVC wrap, ABS, Metal housing can be chosen.
  • Short-circuit, over-current, over-voltage protection.
custom lipo battery

Why choose custom lipo batteries?

  1. Good safety performance. There is no safety hazard, at most it will only be expansion.
  2. Light weight. No metal shell is needed as protective outer packaging.
  3. large capacity. 10~15% higher than steel shell batteries of the same specification.
  4. The shape can be customized. No need to limit the shape, can make the right size.
  5. Good discharge characteristics. It has stable discharge characteristics and a higher discharge platform.
  6. The design of the protection board is simple. Since the battery core does not catch fire, it does not explode. The cell itself is sufficiently safe, so PTC and fuses can be omitted to save costs.

What are applications of custom lipo batteries?

Ternary polymer lithium battery refers to a lithium battery that uses lithium nickel cobalt manganate (Li (NiCoMn) O2) as the positive electrode material of the battery and uses a gel polymer electrolyte. Electrolyte is used as the transport mode of ion movement, usually composed of solvent and lithium salt. The electrolyte of lithium secondary battery mainly includes liquid electrolyte, ionic liquid electrolyte, solid polymer electrolyte and gel polymer electrolyte. Gel polymer electrolyte is composed of polymer, organic solvent and lithium salt, and is prepared by mixing organic electrolyte with solid polymer matrix. Therefore, it generally exists in gel state, taking into account the advantages of solid electrolyte and liquid electrolyte. Considering that the electrolyte is confined in the polymer chain, it also has higher ionic conductivity in a wide temperature range (up to 10-3S/cm). Its big advantage is the high mechanical strength of the diaphragm, and the plastic film provides a large surface area. The thinner the plastic film, the higher the energy density, considering that more active materials can be embedded in the battery. In addition, its electrochemical stability is also very good, high temperature resistance, most high-temperature batteries currently on the market use polymer electrolytes.

custom lipo battery application
  • fingerprint recognition, smart lock, face recognition, smart door lock.
  • driving recorder, car dash cam, DV camera, video camera.
  • hair massage, electric hairbrush, electric hair comb, electric head massage.
  • record pen, voice recorder, audio sound recorder, hidden camera pen.
  • POS terminal, handheld terminal, portable POS system, POS terminal printer, mobile POS terminal.
  • DV camera, video camera, digital camera, baby & pet monitor, action & sports camera.

Lithium Battery Process Work Flow

We are a professional lithium battery factory in China. Now we briefly introduce how to produce lithium batteries. It starts from cathode & anode mixing, coating, baking, calendering, automatic slitting & cutting, winding, top & side sealing, electrolyte injection, pressing formation, forming, capacity grading, OCV1 & OVC2, cell to PCB, insulation and shipping. Welcome to contact and ask for the workflow table list.

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
Supplier Assessment

Steps to Custom Lipo Battery

1. Custom Lipo Battery Cell

Before confirming the lipo battery assembly you need, please let us know the following:

  1. Charge & discharge current rate of the battery.
  2. The max size of whole lipo battery.
  3. PCM requirement. Generally, lithium poly cell adds PCM to protect short-circuit, over-current, over-voltage.
  4. Wire & connector model selection.

2. Cell selection

Based on the max size the customer provide, we will check and confirm the cell size. So we can evaluate the capacity, charge & discharge current rate, production artwork, and raw material proportioning.

It will be produced by following steps: positive & negative pole mixing, cathode & anode mixing, cutting, film-making, winding, aluminum plastic film making, assembly, injection, formation, second seal, grading, full test, Pack.

3.1. PCM design

1. Over-discharge protection: When the lithium-ion polymer battery is about to run out, the voltage reaches a minimum required value (usually 3V), the protection board will be turned off, and the product will not be able to discharge. 

2. Overcharge protection: When charging the polymer lithium-ion battery product, when the voltage reaches the highest voltage (4.2V), the protection board will automatically power off and shut down, indicating that it is fully charged and no longer continues to charge. 

3.2 PCM design

3.3 Short-circuit protection: When the polymer lithium-ion battery is accidentally short-circuited, the protection board will automatically shut down within a few milliseconds and will not be powered on.

3.4 Over-current protection: When the polymer lithium-ion battery is discharged, the protection board will have a maximum current limit. Different products are different. When the discharge exceeds this current, the protection board will automatically shut down.

4. PACK assembly

Battery pack generally refers to assembled batteries, mainly refers to the processing and assembly of lithium battery packs, mainly to process cells, battery protection boards, battery connection sheets, label paper, etc. into products required by customers through the battery pack process. The battery pack is now mainly concentrated in the lithium battery pack factory. They all have their own pack structure design, pack electronic design, and pack production workshop. They can independently develop and design according to the needs of customers. Through the battery scheme, battery specification, battery After the samples meet the customer’s PACK lithium battery customization requirements.

5. Wire & connector selection

As the wire or connector are the electricity exit port, we shall confirm whether customers need wires or connector. Ref it is wires, they usually 2 wires AWG 32#,  30#, 28#, 26#, then customer solder the pins to main board. Ref it is connector, we will consider the female connector to repair. Usually they are JST, Molex. Of course, sometimes it requires 3 Pin or 4 Pin at end. Please see the following connectors for reference.

plug for polymer batteries

Need Any Customized Lipo Battery?

3.7V Lipo Battery Specs

803040 3.7V 800mAh Lipo Battery

402035 3.7V 250mAh Lipo Battery

103048 3.7V 1500mAh Lipo Battery

Product & Factory Certificates

HLC is in compliance with international standards to ensure safety for all applications.

  • Over-charge protection: At 20±5℃ conditions, after fast-charging, use an external 5V power to charge the battery and last for 24 hours, then check the appearance of battery.

  • Over-discharge protection: At 20±5℃ conditions, discharge battery to 2.5V with 0.2C constant current, then discharge with 30Ω loading for 24 hours. Check the appearance of battery.

  • Short-circuit protection: After fast-charging, use a cable of 0.1Ω resistance to short the battery for 24 hours. Then check the appearance of battery.

  • External short-circuit test: Cell terminals are short-circuited to discharged state less than 0.1V or longer time with a resistance of 50mΩ or less. Tests are to be conducted at room temperature.

  • Heating test: The temperature of the oven is to be raised at a rate of 5±2℃/min. to a temperature of 130±2℃, and remains for 30 minutes at this temperature.

  • Crush test: crush between two flat plates. The applied force is about 13kN.

  • Impact test: Impact between bar (15.8mm diameter) and 9 Kg falling material (at a height of 50 cm). Bar is laid across the center of the test sample.

  • Drop test: Drop a fully charged cell onto a concrete floor from the height of 1.0 meters for 2 times.

  • Vibration test: Vibrate the cell in tri-axial directions each for 90~100 min. in conditions of 10~55 Hz with amplitude 0.8 mm.

  • Nail test: The battery is fully charged in standard charging condition,Standby for 2 hour, a nail is penetrated vertically through the center of the cell (The diameter of the nail is 3.0mm.)

  • K value test: Battery temperature 20±5℃ under the use requirements of the daily voltage drop requirements ≤2mV or others.

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, 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.

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