Solar Power Manager For 12V Lead-Acid Battery

The DFRobot Solar Power Manager series are designed for IoT projects and renewable energy projects, providing safe and high-efficiency embedded solar power management modules for makers and application engineers. This medium-power high-efficiency solar power management module allows you to charge a 12V lead-acid battery with a maximum of 4A using a standard 18V solar panel.

Check the brief specification for all Solar Power Manager Series Products.

Solar Power Manager For 12V Lead-Acid Battery is a medium-power high-efficiency solar power management module, which is able to charge a 12V lead-acid battery with a maximum of 4A using a standard 18V solar panel. It is suitable for applications within 100W, such as 12V lighting equipment, security monitoring, small robots, pumps or environmental monitoring stations. It features as MPPT(Maximum Power Point Tracking) function, maximizing the output power of solar panels under various sunlight. Compared with common PWM solar controllers, it can improve charging performance by 10%-30%. Benefited from its small size and light weight, it is easier to embed it in your projects. The module provides dual high-power outputs 5V 5A (OUT1) and 12V 8A (OUT2) and dual USB outputs 5V 2.5A (USB1/USB2). Except USB1, all outputs can be turned ON/OFF by I/O pins of most controllers (3.3V/5V compatible). This feature helps to dynamically power loads and reduce power consumption. Various protection functions are also employed to ensure the safety and stability of the solar systems.

Solar Power Manager Series Name Solar Power Manager v1.0 Solar Power Manager 5v v1.1 Solar Power Manager Micro v1.0 Solar Power Manager v1.0 SKU DFR0535 DFR0559 DFR0579 DFR0580 Solar PowerManagement IC LTC3652 CN3065 SPV1050 CN3767 Solar Input Voltage 7V-30V 4.4V-6V 0.5V-4V 15V-25V Maximum ChargeCurrent 2A(Solar/USB) 900mA(Solar/USB) 70mA(Solar)/100mA(USB) 4A(Solar) Topology DC-DC Buck Linear Regulator DC-DC Boost DC-DC Buck Battery 3.7V Lithium Battery 3.7V Lithium Battery 3.7V Lithium Battery 12V Lead-Acid Battery MPPT 9V/12V/18V Optional 5V Fixed 75% Open Voltage Fixed 18V Battery Protections Over Charge/Over Discharge/OverCurrent/Reverse Connection Protections Over Charge/Over Discharge/OverCurrent/Reverse Connection Protections Over Charge/Over Discharge/ReverseConnection Protections Over Charge/Over Discharge/ReverseConnection Protections Output Protections Short Circuit/Over Current/Over HeatProtections Short Circuit/Over Current Protections Short Circuit/Over Current Protections Short Circuit/Over Current/Over HeatProtections USB Charge IN Yes Yes Yes No USB OUT 5V 1.5A 5V 1A No 5V 2.5A x2 Regulated OUT Three Regulated Outputs3.3V 1A; 5V 1.5A; 9V/12V 0.5A One Regulated Output5V 1A One Regulated Output3.3V 90mA Two Outputs5V 5A; 12V 8A Dimension 78.0mm×68.0mm 33.0mm×63.0mm 30.0mm×30.0mm 68.0mm×68.0mm Features

A complete multifunction solar powermanagement module.

Applications: Small Solar Street Lamp, Solar Powered Robots 

For 9V/12V/18V Solar Panels within20w

A small and easy-to-use 5V solarpower management module.

Applications: Solar Power Bank, SolarEnvironment Monitors

For 5V Solar Panels within 10W

A micro power solar powermanagement module for low-powersensors and controllers.

Applications: Wireless Sensor Network, BLE iBecon

For 1V/2V/3V Solar Panels within0.5W

A medium power solar managementmodule for 12V lead-acid batteries.

Applications: Street lighting, intelligentagriculture, environmental monitoringstation, UPS

For 18V Solar Panels within 100W

Features

• Constant voltage (18V fixed) MPPT algorithm, maximizing solar energy conversion
• Designed for standard 18V solar panels and 12V lead-acid battery
• Multiple high efficiency outputs for 12V or 5V large power devices
• Full protection functions, a safe and high efficiency solar power module
• A variety of status indicators, system status at a glance

Applications

• Street lighting
• Intelligent Agriculture
• Environmental Monitoring Station

Specification

• 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
• Over-discharge Protection Voltage: 10.8V
• Solar Charge Average Efficiency (18V SOLAR IN): 94%
• Outputs^Note1: OUT1 5V 5A, OUT2 12V 8A, USB1 5V 2.5A, USB2 5V 2.5A
• USB1/USB2 Support Three USB Charge Protocols^Note2
  • 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: 93%@50%Load
• OUT2 Efficiency: 98%@50%Load
• Quiescent 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°C~85°C
• Dimension: 68.0mm*68.0mm

Note 1: OUT1/USB1/USB2 shared 5A current driving capacity (peak current 8A), that is, the total output power of the three outputs should not exceed 5V*5A=25W (peak 40W).

Note 2: To ensure whether the communication devices you use are compatible with the protocols listed, please consult your communication device manufacturer or retailers for details. If your device does not support the USB charging protocol mentioned above, usually it will limit the charging power to 5V*1A=5W for security sake. This is not caused by the failure of the USB output or insufficient output capability.
Documents

Product wiki

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Shipping List

• Solar Power Manager For 12V Lead-Acid Battery x1
• Black Jumper x3
• Nylon pillar M3*16 x4
• stainless steel screw M3*10 x4
• Aluminum cooling fin (Black) 14*14*7mm x1
• Thermal conductive silicone pad (Blue) 14*14*0.5mm x1
• Aluminum cooling fin (Black) 50*50*12.7mm x1
• Thermal conductive silicone pad (Blue) 50*50*1.5mm x1
• Female DC power jack adapternbsp; x1