Solar Power Manager Module (6V-24V)

The Solar Power Manager is a module you want for your next project involving solar energy management. It is compatible with 6V to 24V solar panels and can easily charge a 3.7V rechargeable lithium battery either through the solar panel or a Type-C power adapter.

This module is equipped with a 5V/3A regulated output, compatible with multiple charging protocols including PD, QC, FCP, PE, and SFCP, making it versatile for various devices. For another source of power, there is a battery holder included that is compatible with 3x 18650 AA Li-ion batteries (batteries not included).

Featuring an MPPT (Maximum Power Point Tracking) function, it optimises the conversion efficiency of the solar panel, providing maximum energy transfer and prolonged battery life. The module includes a range of protection circuits, which safeguard against issues such as input reverse polarity, providing a stable, safe, and highly efficient operation.

The module’s connectivity, through a DC-002 jack or a screw terminal, makes it especially suitable for powering MCU-based control systems and boards like the Raspberry Pi, Jetson Nano, and Arduino It is ideal for solar-powered projects, and low-power IoT projects, offering a great solution for managing renewable energy resources.

Note: Raspberry Pi and Solar Panel are not included

Features

• MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel
• Solar panel / Type-C power adapter for battery charging
• For 6V~24V solar panel, supports self-adaptive input voltage via DC-002 jack or screw terminal, with input anti-reverse protection
• Multi LED indicators, for monitoring the status of solar panels and batteries
• Multi-protection circuits: over-charge / over-discharge / overheat / over-current, stable and safe to use

What’s on Board

1. Solar panel charging input:
   charged by solar panel via DC-002 jack or screw terminal, self-adaptive input voltage
2. Type-C charging input:
   charged by a 5V power adapter via a Type C connector, or outputs 5V for external device
3. Power output:
   screw terminal: 5V/3A output
4. Battery interfaces:
   for connecting a 3.7V rechargeable Li battery via screw terminal or PH2.0 4P connector
5. SW6106:
   USB power management chip, for USB charging and 5V/3A boost output
6. CN3791:
   solar power management chip, for solar panel charging and buck input
7. XB8886A
   Li battery over-charge / over-discharge protection
8. Battery capacity indicators
   lights up when charging or under load connection, and will turn off after 30s when there is no load connected
9. Solar panel charging indicators:
   Charge: on when solar panel charging
   Done: on when the battery is fully charged by the solar panel

Specifications

Solar In	6V ~ 24V
Recharging	Solar panel, power adapter, USB
Battery	3x 18650 Li-ion battery (NOT included)
USB Input	5V (TYPE-C, with PD quick charge support)
5V Output	5V / 3A (TYPE-C, screw terminal)
Recharging Cutoff Voltage	4.2V ± 1％
Over Discharging Protection Voltage	3.0V ± 1％
Solar Panel Recharging Efficiency	~78%
USB Recharging Efficiency	~93%
Batteries Boost Output Efficiency	~90%
Quiescent Current (Max)	<2mA
Operating Temperature	-40℃ ~ 85℃
Dimensions (mm)	45.0 x 40.0 x 10.1

Connection Example – Raspberry Pi & Solar Panel

Resources

• Product Wiki
• Schematic

Package Contents

• 1x Solar Power Manager
• 1x Screws pack