Dual USB 5V 1A 2.1A 18650 Battery Charger Module (Single Cell Power Bank Charging Board with Protection)

The Dual USB 5V 1A 2.1A 18650 Battery Charger Module is a compact power management board designed for single 3.7V 18650 lithium-ion batteries. It combines a lithium battery charging circuit with a high-efficiency boost converter to provide a stable 5V USB output for charging smartphones, development boards, and portable electronic devices. Featuring dual USB output ports with 1A and 2.1A output capability, this module is ideal for DIY power banks, portable chargers, emergency backup power, and embedded electronics projects.

Key Features -

• Supports single 18650 lithium-ion battery

• Dual USB output ports

• Stable 5V regulated output

• 1A and 2.1A USB output ports

• Integrated lithium battery charging circuit

• Built-in DC-DC boost converter

• Overcharge, over-discharge and short-circuit protection

• Compact PCB design

• Easy battery connection

• Ideal for DIY power bank applications

Specifications -

• Product type - 18650 Battery Charger and Boost Module

• Input voltage - 5V DC

• Battery type - Single 3.7V 18650 Lithium-Ion Cell

• USB output voltage - 5V DC

• USB output current - 1A and 2.1A

• Charging current - Up to 1A

• Conversion type - Step-Up Boost Converter

• Protection - Overcharge, Over-Discharge and Short-Circuit Protection

• Operating temperature - 0C to 50C

• Mounting type - PCB Module

Applications -

• DIY power banks

• Portable USB chargers

• Emergency backup power

• Arduino projects

• ESP32 and ESP8266 projects

• Raspberry Pi power supply

• Portable electronics

• Embedded electronics