🔧 Key Features:

• Input Voltage: Micro USB or 3.7V Li-ion battery input

• Output Voltage: Adjustable (usually 5V or higher via step-up converter)

• Battery Compatibility: 18650 and other 3.7V Li-ion cells

• Charging Function: Integrated lithium battery charging circuit with overcharge and over-discharge protection

• Discharge Testing: Real-time ampere and voltage monitoring during load discharge

• Protection: Overcurrent, short-circuit, and thermal protection

• USB Output: Standard 5V USB for powering or charging external devices

• Compact Design: Easy to integrate into DIY power supply projects or battery banks

⚙️ Applications:

• DIY Power Banks 🔋

• Battery Health & Capacity Testing 📊

• Portable USB Chargers 📱

• Arduino or Raspberry Pi Projects 💡