China Battery Factory Beauty Instrument Li-po Battery UFX 802528 480mAh 3.7V Rechargeable Cell

Item No.: ufx073
The UFX802528 480mAh 3.7V is a rechargeable lithium polymer battery pack that is commonly used in small electronic devices such as wireless earbuds, smartwatches, and remote control toys.
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Description FAQ Review

Ufine New Energy is a leading battery manufacturer based in China, specializing in the production of high-quality lithium-ion batteries, including polymer lithium batteries and lithium-ion rechargeable batteries. Among their extensive product range is the UFX 802528 480mAh 3.7V battery, which is specifically designed for use in beauty instruments. This rechargeable cell offers reliable and long-lasting performance, making it an ideal choice for customers who demand the very best in battery technology. For more information about Ufine's products and services, visit their website at
Specs of UFX802528 480mAh 3.7V

1、Mechanical Characteristics








appr. 9.5g





2、Electrical Specification



Nominal Voltage:




Internal Impedance:

less than 180mΩ

Max. Charge Voltage:


Discharge Cut Off:


Max. Charge Current:


Max. Discharge Current:


Standard Charge Current:


Standard Discharge Current:


Charge Temp. Range:

10°C to 45°C

Discharge Temp. Range

-20°C to 60°C

Storage Temp. Range

1 year at -20℃ to +30℃ 

 Cycle life:

100 cycles ≥92% 

3 moths at -20℃ to +45℃

300 cycles ≥88% 

1 month at -20℃ to +60℃

500 cycles ≥80%  

 3、Cell protection

Overcharge Detection :

4.28 ±25mV (1 to 1.6sec delay, release 4.2V ±50mV)

Overdischarge Detection:

2.5V ±50mV (115 to 175msec. delay, release 3.0V ±50mV)

Overcurrent Detection:

2.5A to 4.0A (9 to 15msec. delay)

Short protection:


4、Discharge Rate Characteristics

4、Cycle life Characteristics


Product Details

Ufine is a manufacturer  with independent research and development and production of polymer lithium-ion batteries. With years of experience in the field of polymer lithium-ion battery solutions, We have accumulated rich  technical experience. Currently, the company offers more than 300 different product models, all certified with KC, UL, CB, and other certifications.Moreover, We can quickly design and develop new products according to customer needs and arrange sample testing.

Why Choose Ufine to OEM or ODM Battery

UFine battery has over 30 professional engineers and technical staff who can provide polymer lithium battery solutions for you. As a lithium battery manufacturer, we are capable of rapid design, customization, and bulk production. Here are the main characteristics of our company:
1、Source manufacturer, strong factory, and powerful design and development capabilities.
Short delivery time and sufficient inventory.

3、Self-produced, sufficient capacity, refuse false labeling, and guarantee capacity.
4、Strict quality control through a full range of quality systems from raw materials to finished products.
5、Our products are certified and meet various international battery standards, allowing us to directly export to markets such as Europe, America, and Korea.
6、Our team of professional foreign trade sales engineers can quickly respond to customer inquiries and provide solutions

Factory Photos

Display Of Testing Equipment

Q: What is the lifespan of a polymer lithium-ion battery?
A: Typically, the lifespan of a polymer lithium-ion battery can reach 300-500 cycles of charge and discharge.

Q: Can a polymer lithium-ion battery be overcharged?
A: No, it cannot. Overcharging can cause the chemical reactions inside the battery to become irreversible, which can damage the battery's structure and even lead to dangerous situations such as battery explosions.

Q: Can a polymer lithium-ion battery be over-discharged?
A: No, it cannot. Over-discharging can cause the electrolyte in the battery to break down and the chemical reactions inside the battery to become out of control, which can damage the battery's structure and even lead to dangerous situations such as battery explosions.

Q: How should polymer lithium-ion batteries be stored?
A: Polymer lithium-ion batteries should be stored in a cool, dry, and well-ventilated place. If not in use for a long time, the battery should be fully charged before storage, and its battery level and status should be checked regularly.

Q: Can polymer lithium-ion batteries be used at any temperature?
A: The optimum operating temperature for polymer lithium-ion batteries is 20-25℃, but they can also be used at other temperatures. However, their performance may be affected to some extent.

Q: How should polymer lithium-ion batteries be charged correctly?
A: During charging, the original charger or a charger that meets the battery specifications should be used, and charging should be carried out in accordance with the charging requirements specified in the battery specifications and usage manual. Typically, the charging current for polymer lithium-ion batteries should be around 1C of the battery capacity.

Q: What safety precautions should be taken when using polymer lithium-ion batteries?
A: When using polymer lithium-ion batteries, care should be taken to avoid overcharging, over-discharging, short circuits, high temperatures, ignition sources, and to avoid using excessively worn batteries, storing the batteries for extended periods in high temperature or humid environments, and direct contact between the battery and other metal substances. At the same time, when using and storing polymer lithium-ion batteries, care should be taken to operate in accordance with the battery specifications and usage manual.

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