Solar Power Management Module, for 6V~24V Solar Panel

SKU: 16120
Part Number: Solar Power Manager (EN)
Brand: Waveshare


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Solar Power Management Module, for 6V~24V Solar Panel
Solar Power Management Module

Compatible with 6V~24V solar panels, supports 850mAh Li battery

Recharged From Solar Panel, Or USB Power Adapter
5V/1A or 3.3V/1A Regulated Output

Features at a glance

This solar power management module is designed for 6V~24V solar panel. It can charge the 3.7V rechargeable Li battery through solar panel or USB connection, and provides 5V/1A or 3.3V/1A regulated output.

The module features MPPT (Maximum Power Point Tracking) function and multi protection circuits, therefore, it is able to keep working with high-efficiency, stability, and safety. It is suited for solar powered, low-power IoT, and other environmental protection projects.

  • Supports MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel
  • Supports solar panel / USB connection battery charging
  • For 6V~24V solar panel, DC-002 jack input or screw terminal input
  • Onboard MPPT SET switch, select the level closed to input level to improve charging efficiency
  • Onboard two power output interfaces: USB port for 5V output, pinheader for 3.3V or 5V output
  • Onboard high capacity aluminum electrolytic capacitor and SMD ceramic capacitor, reducing the ripple, stable performance
  • 14500 battery holder and PH2.0 battery connector, for connecting multi kinds of 3.7V rechargeable Li battery
  • Several LED indicators, for monitoring the status of solar panel and battery
  • Multi protection circuits: over charge / over discharge / reverse protection / over heat / over current, stable and safe to use

Specification comparison
Solar Power Manager

Solar Power Manager (B)

Solar Power Manager (C)

Solar Power Manager (D)
SOLAR IN 6V ~ 24V (6V by default) 6V ~ 24V (18V by default) 6V ~ 24V
Recharging Solar panel, power adapter, USB
Battery 3.7V 14500 Li-ion battery (NOT included) 3.7V 10000mAh Li-po battery 3x 18650 Li-ion battery (NOT included)
USB input 5V (Micro USB) 5V (TYPE-C, with PD quick charge support)
5V output 5V / 1A (USB OUT, pin header)
3.3V / 1A (pin header)
5V / 3A (USB-OUT, TYPE-C) 5V / 3A (TYPE-C, screw terminal)
Recharging cutoff voltage 4.2V ± 1%
Over discharging protection voltage 2.9V ± 1% 3.0V ± 1%
Solar panel recharging efficiency ~78%
USB recharging efficiency ~82% ~93%
Batteries boost output efficiency ~86% ~90%
Quiescent current (Max) <2mA <80mA <30mA
Case N/A Metal case N/A
Operating temperature -40℃ ~ 85℃
Dimensions (mm) 65.2 × 56.2 × 22.9 108.0 × 71.0 × 25.2 119.0 × 71.0 × 25.2 45.0 × 40.0 × 10.1

Supports 6V~24V solar panels

5-level voltage switch, for setting solar panel input voltage to improve efficiency

Application example
for reference ONLY, the MCU board and solar panel are NOT included.

What's on Board
  1. Solar panel charging input:
    charged by solar panel, DC-002 jack or screw terminal
  2. USB charging input:
    charged by USB connection, connect a 5V power adapter through the Micro USB port
  3. Power output:
    USB port: 5V/1A output
    pinheader: 5V/1A or 3.3V/1A
  4. Battery interfaces:
    for connecting 3.7V rechargeable Li battery, PH2.0 connector or 14500 battery holder
  5. CS8501:
    USB power management chip, for USB charging and 5V/1A boost output
  6. CN3791:
    solar power management chip, for solar panel charging and buck input
  7. Li battery protection chip:
    Li battery over charge / over discharge protection
  1. Battery switch
  2. MPPTSET switch (bottom side):
    supported level: 6V/9V/12V/18V/24V
    select the level closed to input level to improve charging efficiency
  3. BOOT key
  4. Battery capacity indicators
  5. USB charging indicators:
    USB Charge: on when USB charging
    USB Done: on when the battery is full charged by USB
  6. Solar panel charging indicators:
    Solar Charge: on when solar panel charging
    Solar Done: on when the battery is full charged by solar panel
    Solar Warning: on when solar panel reverse connection
  7. Battery warning:
    on when battery reverse connection
  8. Power output indicator:
    5V/1A output

Product Show

Outline dimensions

Resources & Services

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.


  • Li-ion and Li-po batteries are quite unstable. They may cause fire, personal injury, or property damage, if they're not properly recharged or used.
  • Do not reversely connect the polarities when recharging or discharging the battery. Do not use inferior charger/charging panel to recharge the battery.
  • Do not mix use old batteries with new ones, avoid using batteries of different brands.
  • When buying Lithium battery, should always make sure the battery specification is compatible with the expansion board. Choose batteries from formal manufacturer, and ensure the batteries will work stably and safely by aging test.
  • Lithium batteries have limited cycle life, they will also deteriorate as time goes by. Should be replaced with new ones when the batteries reaching their max cycle life, or working over two years, whichever comes first.
  • Should be placed carefully and properly, keep it away from inflammables and explosives articles, away from children, avoid any safety accident caused by careless storage.

Weight: 0.029 kg

Quick Overview

Note: the 14500 battery is NOT included.

  1. Solar Power Manager x1