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  • Universal plug 3.7V lithium battery charger 4.2V 3A switching power supply
Universal plug 3.7V lithium battery charger 4.2V 3A switching power supply

Universal plug 3.7V lithium battery charger 4.2V 3A switching power supply

good 3.7V lithium battery charger

Professional Charging Solutions for Li-Ion Batteries: High Efficiency 3.7V Li-Ion Chargers 4.2V 3A Switching Power Supply

Product Description:

Henryuan universal plug 3.7V lithium ion battery charger boost your device’s performance.This 3.7V Li-ion battery charger is designed to deliver fast, safe, and reliable charging for 18650, 21700, and other Li-ion cells. Engineered with precision, this charger supports a charging voltage of 4.2V , ensuring optimal compatibility with mini fans, portable electronics, and power tools. Built-in safeguards like overcharge, over-discharge, and short-circuit protection maximize battery lifespan while prioritizing safety.This 4.2V Li-ion charger got the multiple safety certifications including UL, cUL, ETL, FCC, CE, GS, UKCA, SAA, PSE, and CCC, making it suitable for global use with AU, EU, UK, US, JP, and CN wall plugs.

Key Specifications and Features:

Safety Certificates

  • Comprehensive safety certifications: UL, ETL, cUL, FCC, PSE, CE EMC, LVD, UKCA, SAA, KC, CCC

Input Specifications

  • Input Voltage Range: 90Vac-264Vac
  • Rated Input Voltage: 100Vac-240Vac
  • Input Frequency: 47Hz-63Hz
  • Input Current: 0.6A
  • Inrush Current: 35A

Output Specifications

  • Output Voltage and Current: 4.2V 3A
  • Charging Stages:
    • Constant Current Mode: 2.5V-4.2V(battery voltage), Current: 3A (Red LED)
    • Constant Voltage Mode: 4.2V, Current: 3A -> 0.3A (Red LED)
    • Trickle Charging Mode: 4.2V, Current: 0.3A -> 0 (Green LED)

  • LED Indicator: Dual-color indicator displays charging status—red during charging and green when fully charged

Output

Charging Stage

LED Indicator

Current

Voltage

3A

2.5V-4.2V

Constant Current

Red(Charging)

3A->0.3A

4.2V

Constant Voltage

Red(Charging)

0.3A->0

4.2V

Trickle Current

Green(Fully charge battery)


Applications

This versatile charger is ideal for a wide range of applications, including:
  • Educational robot chargers
  • Electric toy chargers
  • LED desk lamp chargers
  • Flashlight chargers
  • Diving lamp chargers
  • GPS module chargers

Charging Cureve Special Designed For Charging 3.7V Lithium Ion Battery

3.7v lithium battery charger

Protection Features

  • Over current protection
  • Over voltage protection
  • Short circuit protection
  • Reverse polarity protection

Quality Assurance

  • Experienced Sales Engineers: Over a decade of experience understanding customer needs
  • Rigorous Material Selection: High standards for raw material suppliers
  • Stringent Inspection Process: Strict incoming material inspection
  • Advanced Design and Testing: Over 20 years of engineering experience and advanced production testing equipment
  • Comprehensive Aging Testing: 100% aging testing process, up to 4 hours of full load aging
  • Efficient After-Sales Support: Analysis, feedback, and resolution system within 48 hours

About Henryuan Group

good 4.2V 3A switching power supply supplier

Henryuan Group, with over 13 years of experience in the production and R&D of lithium battery chargers, is a leading industry supplier. Our high quality 4.2V 3A switching power supplies that used for 3.7V lithium ion battery are recognized for their superior performance and safety features, making them a popular choice among consumers globally.
These 4.2V 3A Li-ion battery chargers are exported to the Americas, Europe, the United Kingdom, Australia, New Zealand, Italy, France, Germany, Japan, South Korea, Hong Kong, Taiwan, and other regions, enjoying a high market share and they are known for their fast and safe charging, making them perfect for various applications.
With good EMI performance and experienced engineers, we can meet customer requirements for both existing and developmental products. In summary, our 3.7V lithium battery chargers are reliable and efficient solutions for all your charging needs. We offer various models, including 4.2V 0.5A, 1A, 1.5A, 2A, 2.5A, 3A, 3.5A, 4A, 5A, 6A, and 7A.
For a safe, reliable, and efficient 3.7V lithium battery charger, contact Henryuan's sales engineers today.
Keywords Search

  • 3.7V Li-ion battery charger 3.7V 3A lithium ion battery charger 4.2V Li-ion battery charger 4.2V 3A Li-ion battery charger 4.2V 3A switching power supply 4.2V 3A charger