2-Slot Smart Li-ion Battery USB Charger - 3.7V/4.2V - Black

2-Slot Smart Li-ion Battery USB Charger - Intelligent Fast Charging with 0.3m Cable

The 2-slot smart Li-ion battery USB charger provides a safe, efficient and intelligent way to charge your rechargeable lithium-ion batteries. Each slot operates independently, allowing you to charge one or two batteries at the same time without affecting performance. The charger’s built-in smart chip automatically stops charging when batteries reach full capacity, helping extend battery lifespan and ensuring safe everyday use.

Equipped with multiple protection features - including overcharge, overvoltage, short circuit, overcurrent, temperature and overpower safeguards-this charger delivers reliable and worry-free operation. Its adjustable slot design supports a wide range of 3.7 V and 4.2 V lithium battery sizes, making it suitable for flashlights, headlamps, toys, small appliances and more. A 0.3 m USB charging cable is included for convenience.

Key Features
- Intelligent fast-charging system that automatically stops when batteries are fully charged
- Multiple safety protections for safe and reliable daily use
- Independent slot control for charging one or two batteries without interference
- Adjustable slot size compatible with various 3.7 V / 4.2 V Li-ion batteries
- Reverse polarity protection that prevents damage if batteries are inserted incorrectly
- USB charging method suitable for power banks, wall chargers or laptops

Specifications
- Charging Slots: 2
- Compatible Batteries: 3.7V / 4.2V lithium-ion batteries
- Charging Method: USB
- Included: 0.3 m charging cable
- Safety Features: Overcharge, overvoltage, short circuit, overcurrent, temperature, over-power protection
- Special Features: Adjustable slot size, reverse polarity protection
- Charging Control: Independent slot operation

Ideal Usage Examples
- Recharging batteries for flashlights, headlamps or small electronics
- Safe daily charging for multi-size Li-ion batteries
- Keeping backup batteries charged for outdoor trips or work tools
- Home, office and travel use thanks to compact USB-powered design

Why This Product Is a Great Purchase
This smart charger offers advanced safety and compatibility in a compact, easy-to-use design. Its independent charging slots, automatic shut-off and multiple protections make it a dependable tool for anyone using rechargeable Li-ion batteries. With broad compatibility and included USB cable, it’s a reliable accessory for everyday battery management.

Interesting Facts
- Independent slot charging helps prevent uneven aging of lithium batteries
- Reverse polarity protection enhances safety by preventing damage from incorrect battery insertion
- USB-powered chargers are more energy-efficient and convenient for portable use

Package included:
- 1 x Battery Charger
- 1 x Charging Cable

Packing: Bulk