Mini Solar Charger (Single Cell Li-ON and LiPO)

Overview

Power your next off-grid project with the MOKWN Mini Solar Charger. This compact and efficient module harnesses solar energy to safely charge single-cell Li-Ion or LiPo batteries, making it an essential component for remote IoT deployments, outdoor sensors, and portable electronics. Whether you're powering an Arduino board, an ESP8266 module, or any low-power device, this charger provides a sustainable and reliable energy solution.

Key Features

• Efficient Solar Charging: Converts solar panel output (4.4-6V) into a regulated charge for single-cell Li-Ion/LiPo batteries.
• Compact Design: Tiny footprint (2cm x 4cm) easily fits into small enclosures and custom PCBs.
• Up to 500mA Charge Current: Supports fast and reliable charging for batteries up to 500mAh capacity (or higher with lower current).
• Versatile Compatibility: Works with a wide range of single-cell Li-Ion and LiPo batteries, from 3.7V to 4.2V.
• Plug-and-Play: Simple connections for solar panel, battery, and load – no complex setup required.

Technical Specifications

• Dimensions: 2cm x 4cm
• Solar Panel Input: 4.4V - 6V
• Maximum Charge Current: 500mA
• Battery Compatibility: Single-cell Li-Ion / LiPo (3.7V nominal)
• Output: Direct load output (can be connected to battery for powering devices)

Applications & Use Cases

• Remote IoT Sensors: Deploy environmental or agricultural sensors in sunny locations without grid power.
• Outdoor Arduino Projects: Power weather stations, birdhouse cameras, or garden monitors.
• Wearable Electronics: Integrate into small form-factor projects that require autonomous charging.
• Educational Demonstrations: Teach renewable energy and battery management concepts in classrooms or maker spaces.
• Emergency Backup: Keep a small backup battery charged for critical low-power applications.

What's Included

• 1x Mini Solar Charger module
• (Solar panel and battery are NOT included – sold separately)

Compatibility

• Batteries: Single-cell Li-Ion or LiPo with nominal voltage 3.7V (fully charged 4.2V).
• Solar Panels: 4.4V to 6V output, recommended 5V/1A for optimal performance.
• Microcontrollers: Works with Arduino, ESP8266, ESP32, Raspberry Pi Pico, and other low-power boards when connected to the battery output.

MOKWN Recommendation

For a complete off-grid solution, pair this charger with a 6V/1W solar panel and a 3.7V Li-Ion battery (e.g., 18650). This combination provides a robust power source for your low-power projects. Always ensure your load current does not exceed the charging current to avoid draining the battery faster than it charges.