CN3791 MPPT Solar Charger Module 6V HW-032A
The CN3791 MPPT Solar Charger Module 6V (HW-032A) is an intelligent solar battery charging board built around the CN3791 charging controller IC. It is specifically designed for charging a single-cell 3.7V Li-ion or Li-Po battery from a 6V nominal solar panel, utilizing Maximum Power Point Tracking (MPPT) technology to maximize energy harvested from the solar panel under varying sunlight conditions. The module uses a constant-current/constant-voltage (CC/CV) charging algorithm to ensure safe and efficient battery charging.
The HW-032A module is ideal for off-grid electronics, solar-powered IoT devices, weather stations, portable battery systems, and renewable energy projects. It includes battery protection features such as automatic recharge, soft start, battery activation for deeply discharged cells, and charging status indicators. With multiple input/output connection options, it can be easily integrated into custom solar-powered designs.
Features:
- MPPT (Maximum Power Point Tracking) technology.
- Designed for 6V nominal solar panels.
- Complete CC/CV lithium battery charging algorithm.
- Supports single-cell Li-ion and Li-Po batteries.
- High charging efficiency.
- Automatic battery recharge.
- Battery activation for deeply discharged batteries.
- Soft-start charging.
- Built-in charging status indicators.
- Battery over-voltage protection.
- Compact PCB for embedded applications.
- Easy connection using JST connectors and solder pads.
Specifications:
| Parameter | Value |
|---|---|
| Controller IC | CN3791 |
| Module Model | HW-032A |
| Solar Panel Input | 6V Nominal (5V–9V Recommended) |
| Battery Type | 1S Li-ion / Li-Po |
| Battery Voltage | 3.7V Nominal |
| Charge Termination Voltage | 4.2V ±1% |
| Maximum Charging Current | Up to 2A |
| Charging Method | CC/CV |
| MPPT | Supported |
| PWM Switching Frequency | 300kHz |
| Operating Temperature | -40°C to +85°C |
| Status Indicators | Charging LED / Full Charge LED |
Pinout:
Applications:
- Solar-powered IoT devices.
- Remote sensor nodes.
- Weather stations.
- Portable solar chargers.
- DIY solar battery systems.
- Outdoor monitoring equipment.
- Garden lighting.
- Renewable energy projects.
- Emergency backup power systems.
- Educational solar energy projects.
Package Includes:
- 1x CN3791 MPPT Solar Charger Module 6V HW-032A.