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Solar Power Manager For 12V Lead-Acid Battery

Reference RBD-2857

Brand DFRobot

High-efficiency solar power management module designed for 12V lead-acid batteries
Supports up to 4A charging current using a standard 18V solar panel
Built-in MPPT algorithm for 10–30% improved charging efficiency over PWM controllers
Provides multiple outputs: 12V 8A, 5V 5A, and dual USB 5V 2.5A with smart control
Compact 68mm x 68mm design with full protection features for safe operation
Ideal for street lighting, intelligent agriculture, pumps, robots, and monitoring stations

Description
Product Details

Description

The Solar Power Manager for 12V Lead-Acid Battery is a medium-power, high-efficiency solar charging controller designed for IoT and renewable energy projects. It can charge a 12V lead-acid battery with up to 4A current using a standard 18V solar panel, making it suitable for systems under 100W. Featuring advanced MPPT technology, it ensures maximum energy extraction from solar panels, improving performance by 10–30% compared to conventional PWM controllers. With multiple output options including 12V 8A, 5V 5A, and dual USB 5V 2.5A, this module offers flexible power delivery for various devices. Its compact size, wide operating temperature range (-40℃ to 85℃), and comprehensive protection mechanisms make it reliable for off-grid, agricultural, and monitoring applications. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

Efficient Solar Charging – Charges 12V lead-acid batteries with up to 4A using 18V solar panels.
MPPT Technology – Maximizes solar energy conversion efficiency, outperforming PWM controllers by 10–30%.
Multiple Outputs – Dual high-power outputs (5V/12V) and dual USB ports for powering multiple devices.
Smart ON/OFF Control – Outputs can be controlled via I/O pins (3.3V/5V compatible) to optimize power usage.
Comprehensive Protection – Safeguards against overcharge, over-discharge, reverse connection, short circuit, overheating, and backflow.
Compact & Durable Design – Small 68mm x 68mm board with rugged operating range (-40℃ to 85℃).

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Applications:

Street Lighting – Reliable solar charging for autonomous outdoor lighting systems.
Smart Agriculture – Powers irrigation pumps, sensors, and control units in remote farms.
Environmental Monitoring Stations – Ensures stable power for weather, air quality, or water monitoring devices.
Security & Surveillance – Provides off-grid power for 12V cameras and monitoring equipment.
Robotics & DIY Projects – Ideal for small solar-powered robots and IoT prototypes.

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General Specifications
Solar Power Management IC	CN3767
Solar Input Voltage	15V – 25V
Battery Compatibility	12V Lead-Acid Battery
Max Charge Current	4A
Charging Stages	Trickle, Constant Current, Constant Voltage, Float
Float Charge Voltage	13.55V
Over-Discharge Protection	10.8V
Average Efficiency (18V Input)	94%
Outputs	OUT1: 5V 5A, OUT2: 12V 8A, USB1: 5V 2.5A, USB2: 5V 2.5A
Supported USB Protocols	Apple 2.4A, Samsung 2.0A, BC1.2
Output Efficiency	OUT1/USB: 93%@50% Load, OUT2: 98%@50% Load
Quiescent Current	<4mA
Protections	Overcharge, Over-discharge, Reverse Connection, Short Circuit, Overheat, Backflow
Operation Temperature	-40℃ to 85℃
Dimensions	68mm × 68mm
Shipment Weight	0.050 kg
Shipment Dimensions	8 × 8 × 2 cm

Please allow 5% measuring deviation due to manual measurement.

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Documentation:

Solar Power Manager For 12V Lead-Acid Battery Board Overview

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Build a solar powered system

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DOCUMENTS

Package Includes:

1 x Solar Power Manager For 12V Lead-Acid Battery

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Product Details

Reference RBD-2857

In stock 1 Item

Specific References

EAN13: 2857

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Solar Power Manager For 12V Lead-Acid Battery

Features:

Applications:

Documentation:

Solar Power Manager For 12V Lead-Acid Battery Board Overview

Build a solar powered system

DOCUMENTS

Package Includes:

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