Professional Customized for Professional Custom for Speaker Li-ion Battery UFX 103450-2P 4000mAh 3.7V Li-polymer Battery Pack

Brand:UFINE NEW ENERGY (UFX)

As the CEO of Ufine New Energy, I am proud to offer our high-quality custom battery solutions for a variety of needs, including our UFX 103450-2P 4000mAh 3.7V lithium-ion and lithium-polymer battery packs for speakers. Our team of experts is dedicated to understanding your unique requirements and providing a battery solution that is tailored to meet your specific needs.

With 15 years of exporting experience, we have gained a reputation for providing efficient and customized battery solutions. Our batteries are designed with the latest technology and undergo rigorous testing to ensure optimum performance and reliability. Trust us to provide efficient and reliable battery solutions for all your needs, including your speaker. Visit our website at ufinebattery.com to learn more about our products and services, including our 3.7V batteries, lithium ion rechargeable batteries, and lipo batteries.

Specs of UFX103450-2P 4000mAh 3.7V

1、Mechanical Characteristics
Cell:	UFX103450	PCM:	Yes
NTC:	No	Weight:	appr. 55g
Configuration:	1S2P
2、Electrical Specification
Capacity:	4000mAh	Nominal Voltage:	3.7V
Energy:	14.8Wh	Internal Impedance：	less than 100mΩ
Max. Charge Voltage:	4.2V	Discharge Cut Off:	2.75V
Max. Charge Current:	2000mA	Max. Discharge Current:	2000mA
Standard Charge Current:	800mA	Standard Discharge Current:	800mA
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		4、Cycle life Characteristics

Product Details

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

Factory Photos

Display Of Testing Equipment


Certification