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CN3767 12V Lead-Acid Battery Solar Power Manager Module

SKU: DFR0580

The CN3767 Solar Power Manager is a high-efficiency module for 12V lead-acid batteries. It charges via 18V solar panels (max 4A) with MPPT, boosting charging by 10-30% over PWM. Suitable for 100W apps (lighting, security, robots, etc.). It has dual high-power (5V5A, 12V8A) and USB (5V2.5A) outputs; most can be controlled via 3.3/5V I/O. Compact, easy to embed, with full protection for safety.

Front of solar power manager circuit board for 12V lead-acid battery-DFRobot product sku:DFR0580 image.

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Details
    Solar Power Management IC CN3767
    Solar Input Voltage (SOLAR IN) 15V~25V
    Battery Input (BAT IN) 12V Lead-Acid Battery
    Charge Current 4A Max Trickle Charging, Constant Current, Constant Voltage, Float Charging Four Stages Charging dedicated for 12V Lead-Acid Battery
    Float Charge Voltage 13.55V
    Constant Voltage Stage 14.8V
    Over-discharge Protection Voltage 10.8V
    Over-discharge Protection Release Voltage 11.8V
    Solar Charge Average Efficiency (18V SOLAR IN) 94%
    OutputsNote1 OUT1 5V 5A, OUT2 12V 8A, USB1 5V 2.5A, USB2 5V 2.5A
    USB1/USB2 Support Three USB Charge ProtocolsNote2 - Apple 2.4A：DP=2.7V，DM=2.7V
    - SAMSUNG 2.0A：DP = 1.2V，DM =1.2V
    - BC1.2：DP=DM=0V (Short)
    OUT1/USB1/USB2 Efficiency 90%@10%Load, 93%@50%Load, 92%@90%Load
    OUT2 Efficiency 99%@10%Load, 98%@50%Load, 97%@90%Load
    Operating Current <4 mA
    Protection Functions - SOLAR IN: Backflow/Reverse Connection Protections
    - BAT IN: Over-discharge/Over-charge/Reverse Connection Protections
    - OUT1-2/USB1-2: Short Circuit/Over Current/Over Heat Protections
    Operation Temperature -40℃～85℃
    Dimension 68.0mm * 68.0mm

    Pinout

    Board Overview

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