MPPT Solar Charge Controller 1A 4.2V 3.7V 18650 LiPo Li-ion Lithium Battery Charger Module SD05CRMA

The SD05CRMA MPPT Solar Charge Controller Module is a compact solar battery charging solution designed for compatible single-cell 3.7V lithium-ion and lithium-polymer (LiPo) batteries, including 18650 rechargeable batteries. Featuring a specified 1A charging capability, this module is intended for solar-powered electronics and small battery charging projects.

With its MPPT (Maximum Power Point Tracking) functionality, the module is designed to help utilize the available power from a compatible solar panel for more efficient battery charging under suitable operating conditions. Its compact design makes it suitable for DIY solar projects, portable electronics, low-power IoT devices, and other applications requiring solar-powered battery charging.

The module is intended for rechargeable lithium batteries with a nominal voltage of 3.7V and a typical full-charge voltage of 4.2V. For safe operation, verify the module’s input voltage range, charging current, battery compatibility, and protection features before installation.

Key Features

• MPPT Solar Charging: Designed to optimize the use of available solar panel power under suitable operating conditions.
• 1A Charging Capability: Supports a stated charging current of up to 1A, subject to input power and module operating limits.
• 3.7V Lithium Battery Compatibility: Designed for compatible single-cell lithium-ion and lithium-polymer batteries.
• 4.2V Charging Voltage: Suitable for standard 4.2V full-charge lithium-ion cells, when confirmed by the module specifications.
• 18650 Battery Support: Suitable for compatible rechargeable 18650 lithium-ion battery cells.
• Compact Module Design: Easy to integrate into small solar-powered electronic projects.
• Solar-Powered Applications: Designed for projects using a compatible solar panel as the charging power source.
• DIY Electronics Friendly: Useful for prototyping and low-power battery charging applications.

Technical Specifications

Important: The exact solar panel input voltage range, MPPT operating range, charging-current limits, dimensions, connector type, efficiency, and built-in protection functions should be confirmed from the manufacturer’s datasheet or product listing. The stated 1A rating should not be interpreted as guaranteed charging current under all sunlight conditions.

How Does the MPPT Solar Charger Module Work?

MPPT stands for Maximum Power Point Tracking. Solar panel output varies with sunlight intensity, temperature, and electrical load. An MPPT charging circuit is designed to operate the solar panel near a suitable power point so that more of its available energy can be used for charging.

The SD05CRMA module is intended to connect a compatible solar panel to a supported single-cell lithium battery charging system. Under suitable conditions, it can help convert available solar energy into charging power for a rechargeable 3.7V battery.

Actual charging performance depends on solar panel specifications, sunlight conditions, battery state of charge, and the module’s operating limits.

Applications

The SD05CRMA MPPT Solar Charge Controller Module is suitable for a range of small solar-powered projects, including:

• Solar-powered IoT devices
• DIY solar battery charging systems
• Portable solar electronics
• Compatible 18650 battery charging projects
• Small environmental monitoring devices
• Low-power wireless sensors
• Solar-powered LED projects
• Educational electronics and prototyping
• Battery-powered projects using compatible LiPo cells