This CN3065-based module is a linear Li-ion/LiPo battery charger optimized for solar input. It provides safe CC/CV charging for 1S 3.7 V cells and includes automatic power path management. Ideal for low-power solar harvesting in IoT, sensor nodes, and portable devices.

Specifications

• Controller IC: CN3065 (linear Li-ion charger with solar optimization)
• Input Voltage: 4.4 V to 6.0 V DC (solar panel or USB)
• Charging Voltage: 4.2 V (fixed for 1S Li-ion/LiPo)
• Charging Current: Up to 500 mA (typical)
• Battery Type: 1S 3.7 V Li-ion / Li-polymer
• Charging Algorithm: CC/CV with automatic recharge
• Power Path Management: Yes (solar-aware input control)
• Status Indicators:
  • Charging (red LED)
  • Fully charged (green LED)
• Protection Features:
  • Overvoltage
  • Overcurrent
  • Thermal regulation

Features

• Optimized for solar panel input with low quiescent current
• Safe charging of 1S Li-ion/LiPo cells with automatic recharge
• Compact footprint for embedded and portable solar projects
• Onboard LEDs for charge status indication
• Ideal for solar-powered IoT nodes, garden lights, and sensor modules
• Common use cases:
  • Charging 18650 or pouch cells from small solar panels
  • Solar-powered weather stations and environmental sensors
  • Portable battery packs and DIY solar kits