Solar Power Manager (C)

WaveshareSKU: WAV-20909
Sale price £23.70
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Voltaic SystemsLarge 6V 3.5W Solar panel (3.5 Watt)
Sale price £51.50 incl. VAT excl. VAT

This solar power manager is the ultimate base for this summer's solar power project!

The unit accepts 3x 18650 batteries (batteries not included) which can be recharged from either your connected solar panel or a type-C power adapter (5V, with PD quick charge support).

It's compatible with 6-24V solar panels with a DC-002 (3.5mm) connector, but also comes with a DC-002 terminal block adapter to wire your panel manually. The onboard MPPT (maximum power point tracker) SET switch allows you to tune charging efficiency by matching the voltage level to your input level.

The power manager outputs a regulated 5V 3A via the USB-A or USB-C output, which supports various protocols (PD/QC/FCP/PE/SFCP). The integrated LED indicators keep you informed on charging, polarity errors and other information.

Please read the Product Wiki before using.


  • Supports MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel
  • Flexible battery recharging: Solar panel or USB Type-C power adapter
  • Compatible with 6V~24V solar panels, DC-002 jack input or screw terminal input using provided adapter
  • Onboard MPPT SET switch, select the level close to input level to improve recharging efficiency
  • Onboard aluminium electrolytic capacitor and SMD ceramic capacitor, reducing ripple
  • Embedded battery holder, supports 3x 18650 rechargeable Li-ion batteries (not included)
  • Multiple protection circuits: Over-charge, over-discharge, reverse-proof, over-heat and over-current
  • Several LED indicators, for monitoring the status of the solar panel and batteries:
    • Solar Warning: Indicates if the solar panel is reversed
    • Solar Charge: Indicates when the unit is charging from the solar panel
    • Solar Done: Indicates when the battery is fully charged
    • Quick: Indicates quick charge active

Feature Detail

Solar Power Manager Features

1) Solar panel input
 - Recharging through DC-002 jack or screw terminal
2) Type-C recharging/output port
 - Supports 5V power adapter for recharging
 - Supports PD protocol quick charge adapter
 - Supports PD/QC/FCP/PE/SFCP multi protocols output
3) USB output port
 - 5V/3A regulated output
 - Supports PD/QC/FCP/PE/SFCP multi protocols output
4) Battery on/off switch
5) BOOT button
6) Quick charge indicator
7) Solar panel status indicators
 - Solar Warning: lights up if solar panel is reversed
 - Solar Charge: lights up when recharging from solar panel
 - Solar Done: lights up when the battery is fully recharged
8) Battery life indicators


Solar In 6V ~ 24V (18V by default)
Charging Solar panel, power adapter, USB
Battery 3x 18650 Li-ion battery (NOT included)
USB input voltage 5V (TYPE-C, with PD quick charge support)
5V output 5V / 3A (USB-OUT, TYPE-C)
Charge cut-off voltage protection 4.2V ± 1%
Over-discharge protection voltage 3.0V ± 1%
Solar panel charge efficiency ~78%
USB charge efficiency ~93%
3.7V battery boost output efficiency ~90%
Max quiescent current <2mA
Enclosure Metal case
Operating temperature -40°C - 85°C
Dimensions 119.0 × 71.0 × 25.2

Package Contents

  • 1x Solar Power Manager (C)
  • 1x DC-002 Terminal Block Adapter

18650 cells not included


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