UFX 402525 250mAh 3.7V Smallest Rechargeable Battery

BRAND:UFINE/UFX BATTERY

Ufine New Energy is a leading factory specializing in the production of the UFX 402525 250mAh 3.7V battery, which is known as the smallest rechargeable battery in the market. With our advanced manufacturing facilities and expertise in battery technology, we are committed to delivering high-quality and reliable batteries to meet the diverse needs of our customers.

The UFX 402525 250mAh battery is specifically designed to provide a compact and efficient power solution for various portable electronic devices. Despite its small size, this battery offers a remarkable capacity of 250mAh, ensuring long-lasting performance. Whether it is for wearable devices, wireless earphones, or other compact gadgets, our battery delivers consistent power output to keep your devices running smoothly.

At Ufine New Energy, we prioritize safety and quality in our manufacturing processes. Our batteries undergo rigorous testing and adhere to international standards to ensure their reliability and safety. We utilize advanced production techniques and high-quality materials to guarantee the longevity and stability of our batteries.

As a trusted battery manufacturer, we are dedicated to providing exceptional customer service and support. Our team of professionals is committed to assisting you in finding the best battery solution for your specific requirements. We strive to exceed customer expectations by delivering products that meet the highest industry standards.

Choose Ufine New Energy for your battery needs, and you can trust in our commitment to producing the UFX 402525 250mAh 3.7V battery, the smallest rechargeable battery with outstanding performance. We are proud to be your reliable partner in delivering small, yet powerful battery solutions for a wide range of applications.

1、Mechanical Characteristics
Cell:	UFX402525	PCM:	Yes
NTC:	No	Weight:	appr.5.8g
Configuration	1S1P
2、Electrical Specification
Capacity:	250mAh	Nominal Voltage:	3.7V
Energy:	0.925Wh	Internal Impedance:	less than220mΩ
Charge Voltage:	4.2V	Discharge Cut Off:	2.75V
Max. Charge Current:	250mA	Max. Discharge Current:	250mA
Standard Charge Current:	125mA	Standard Discharge Current:	125mA
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：	Yes
4、Discharge Rate Characteristics		5、Cycle life Characteristics

Product Details
We are an advanced technology company specialized in the research and production of Lithium Polymer battery, LiFePO4 battery, Ultra thin lipobattery, Low-temperature battery.Our company has obtained complete certification for our batteries, including KC, UL, CB, UN38.3, and CE certifications for over 280 product models. Our products are primarily exported to Europe, America, Japan, and South Korea, and have received high praise from our customers,as well as offering batteries with different features:

-40℃ ultra-low temperature lithium battery.

Customizable size and shape.

3C fast charge battery.

25C high discharge rate battery

High energy density battery (≥260Wh/kg)

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.

2、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