402035 3.7V 250mAh Chargeable Li Polymer Battery

Additional information

Rated Voltage


Rated Capacity


Battery Size


Charge Temperature


Discharge Temperature



Smart Devices

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.

Product Details

Product number: HLC402035
Cell model:402035/3.7V/250mAh
Battery specification: 402035-1S1P/3.7V/250mAh(pouch battery)
Nominal voltage:3.7V
Nominal capacity:250mAh
Charging voltage: 4.2V
Charging current: ≤250mA
Discharging current: ≤250mA
Instant discharging current: 250mA
End-off voltage: 3V
Internal resistance: ≤70mΩ
Battery weight: 5g
Product dimension: 4*20*35mm
Charging temperature:0~45℃
Discharging temperature: -20~60℃
Storage temperature: -20~45℃
Battery case: Aluminum plastic pouch cell
Application field: Smart Devices

Lithium battery advantages:

  • High working voltage, the working voltage of lithium-ion battery is 3.7V, which is three times that of nickel-cadmium and nickel-metal hydride batteries.
  • Higher specific energy. The specific energy of lithium-ion batteries has reached 140Wh/kg, which is 3 times that of nickel-cadmium batteries and 1.5 times that of nickel-hydrogen batteries.
  • Long cycle life. The cycle life of lithium-ion batteries has reached more than 1,000 times, and it can reach tens of thousands of times at low discharge depths, surpassing several other secondary batteries.
  • Small self-discharge. The monthly self-discharge rate of lithium-ion batteries is only 6% to 8%, which is much lower than that of nickel-cadmium batteries (25% to 30%) and nickel-metal hydride batteries (30% to 40%).
  • No memory effect. It can be charged at any time on demand without degrading battery performance.
  • No pollution to the environment. There are no harmful substances in the lithium-ion battery, and it is a veritable “green battery”.

Lithium battery basic information:

The three elements of a general battery: positive electrode, negative electrode and electrolyte. The so-called lithium polymer battery refers to a battery system that uses polymer materials in at least one or more of the three elements. In the lithium polymer battery system, most of the polymer materials are used in the cathode and electrolyte. The positive electrode material is a conductive polymer or an inorganic compound used in general lithium ion batteries, the negative electrode is often a lithium metal or a lithium carbon interlayer compound, and the electrolyte is a solid or colloidal polymer electrolyte or an organic electrolyte. Since there is no excess electrolyte in the lithium polymer, it is more reliable and stable.


  • Will you customize lithium-polymer battery for us?
    Yes, we can custom different capacities from 100mAh to 3000mAh, with different dimensions.
  • What are the biggest features of lipo batteries?
    High energy, miniaturization, lightweight
  • How long will you receive samples?
    We can deliver samples around 7~15 days once the datasheet is approved.


Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@hlcbattery.com”