3.7V to 5V 1A Lithium Battery Board Module Board Charger USB Mini USB Lithium Boost Module

The Portable Power Bank Board Module is a compact charging and voltage boost circuit designed for building DIY power banks using rechargeable lithium-ion batteries. It combines battery charging, protection, voltage boosting, and USB output functionality on a single PCB. The module allows a 3.7V lithium battery to provide a stable 5V USB output suitable for charging mobile phones, development boards, and USB-powered devices.

This module is widely used in portable electronics and battery-powered projects because of its compact size, efficient power conversion, and built-in safety features.

Technical Specifications:

• Input Voltage: 5V DC (Micro USB input)
  
• Battery Type: 3.7V Lithium-ion / Lithium-polymer battery
  
• Charging Voltage: 4.2V
  
• USB Output Voltage: 5V DC
  
• Output Current: Up to 1A (typical)
  
• Charging Current: Approx. 1A

Features:

• Integrated lithium battery charging and protection circuit
  
• Boost converter generates stable 5V USB output
  
• Compact and lightweight PCB design
  
• Micro USB charging interface for convenient charging
  
• USB Type-A port for powering USB devices
  
• Built-in LED indicators for charging and power status
  
• High conversion efficiency with low standby power consumption
  
• Supports DIY portable power bank projects
  
• Safe operation with multiple protection mechanisms

Applications:

• DIY power bank and portable charger projects
  
• Battery-powered embedded systems
  
• Portable USB power supply for Arduino and Raspberry Pi
  
• Emergency mobile phone charging systems
  
• Rechargeable battery management projects
  
• Portable lighting and USB gadgets
  
• IoT and wearable device power solutions
  
• Educational and electronics laboratory experiments