CN3791 MPPT Solar Charger Board – Adjustable 3.7V 18650 Lithium Battery Charger with Overvoltage Protection

Build a more efficient solar charging setup with this CN3791 MPPT Solar Lithium Battery Charger Board. Designed for compatible single-cell lithium battery applications, this compact charging module uses MPPT technology to help make better use of available solar power while providing regulated charging.

It's a useful component for DIY electronics, portable solar projects, battery-powered devices, and custom energy systems.

Key Features

• MPPT Solar Charging — CN3791-based charging technology helps optimize power harvested from compatible solar panels.

• Lithium Battery Charging — Designed for compatible single-cell lithium battery applications, including 3.7V-class rechargeable batteries.

• Adjustable Charging Configuration — Suitable for DIY projects requiring customized charging parameters.

• Overvoltage Protection — Helps protect the connected charging system from excessive voltage.

• Compact Circuit Board — Small module design makes it easy to integrate into custom electronics projects.

• DIY-Friendly — Suitable for electronics enthusiasts, hobbyists, and custom battery-powered applications.

• Efficient Power Management — Designed to regulate solar-generated power for compatible lithium battery charging.

Specifications

• Model / Controller: CN3791

• Product Type: MPPT Solar Lithium Battery Charger Board

• Application: Lithium Battery Charger Board

• Battery Type: Compatible Single-Cell Lithium Battery

• Battery Class: 3.7V Lithium Battery

• Function: Solar Charging / Voltage Regulation

• Protection: Overvoltage Protection

• Condition: New

• Brand: REALPOY

• Origin: Mainland China

Ideal For

This charging board can be incorporated into compatible DIY solar chargers, portable power projects, battery-powered electronics, custom energy systems, and experimental electronics builds.

Important Compatibility Notice

This is a bare electronic charging module, not a complete solar charger or battery pack. Verify the solar panel specifications, battery chemistry, voltage, charging requirements, polarity, and module configuration before connecting components.

Designed for DIY projects and compatible lithium battery charging applications.