552535 3.7V 400mAh Rechargeable Lipo Battery

Additional information

Rated Voltage


Rated Capacity


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Discharge Temperature



Bluetooth Speaker

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: HLC552535
Cell model:552535/3.7V/400mAh
Battery specification: 552535-1S1P/3.7V/400mAh(pouch battery)
Nominal voltage:3.7V
Nominal capacity:400mAh
Charging voltage: 4.2V
Charging current: ≤400mA
Discharging current: ≤400mA
Instant discharging current: 400mA
End-off voltage: 3V
Internal resistance: ≤70mΩ
Battery weight: 8g
Product dimension: 5.5*25*35mm
Charging temperature:0~45℃
Discharging temperature: -20~60℃
Storage temperature: -20~45℃
Battery case: Aluminum plastic pouch cell
Application field: Bluetooth Speaker

Lithium battery description:

Lithium polymer batteries (Li-polymer, also known as polymer lithium-ion batteries) have many advantages such as high specific energy, miniaturization, ultra-thinness, light weight and high safety. Based on this advantage, lithium polymer batteries can be made into any shape and capacity to meet the needs of various products; and it is packaged in aluminum-plastic, and internal problems can be immediately manifested through the outer packaging, even if there are potential safety hazards , it will not explode, it will only bulge.

In the polymer battery, the electrolyte plays the dual function of the separator and the electrolyte: on the one hand, it separates the positive and negative materials like a separator, so that self-discharge and short circuit does not occur inside the battery, on the other hand, it acts as a positive and negative electrolyte like the electrolyte. Conduction of lithium ions between the electrodes. Polymer electrolytes not only have good electrical conductivity, but also have the characteristics of light weight, good elasticity, and easy film formation that are unique to polymer materials.

Most of the domestic polymer batteries are only soft pack batteries, using aluminum-plastic film as the shell, but the electrolyte has not changed. This kind of battery can also be thinned, its low-temperature discharge characteristics are better than that of polymer batteries, and the material energy density is basically the same as that of liquid lithium batteries and ordinary polymer batteries, but because of the use of aluminum-plastic film, it is more efficient than ordinary liquid lithium batteries. light. In terms of safety, when the liquid just boils, the aluminum-plastic film of the soft pack battery will naturally bulge or rupture, and it will not explode.

Advantages of Lithium-Ion Batteries:

  • 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”.


  1. How long will you provide samples?
    Generally at 7~15 days.
  2. What’s the MOQ?
    We can accept small orders at the beginning.
  3. What’s the product warranty?
    We can support 12 months product guarantee after we deliver to customers.

Ask For A Quick Quote

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