Wireless Bluetooth MP3 WMA Decoder Board Audio Module Support USB TF AUX FM Audio Radio Module AM2 AB0139

Features

• Supports 3.7V 18650 lithium-ion batteries
• Dual USB output ports (5V 1A and 5V 2.1A)
• Built-in overcharge, over-discharge, and overcurrent protection
• Stable 5V regulated output
• Micro USB charging input
• Intelligent charging management
• Compact PCB design for DIY power bank projects
• Easy battery and USB connection terminals

Specifications

• Input Voltage: 5V DC (Micro USB)
• Input Current: Up to 1A
• Output Voltage: 5V DC
• USB Output 1: 5V / 1A
• USB Output 2: 5V / 2.1A
• Battery Type: 3.7V 18650 Lithium-Ion Battery
• Protection Functions:
  • Overcharge Protection
  • Over-discharge Protection
  • Overcurrent Protection
  • Short Circuit Protection
• Display: Battery Level / Charging Status Indicator (model dependent)
• PCB Size: Approx. 57mm × 28mm

Applications

• DIY Power Banks
• Mobile Phone Chargers
• Portable USB Power Supplies
• Arduino and ESP32 Projects
• IoT Devices
• Emergency Backup Power Systems
• Robotics and Electronics Projects