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18650 Solar Board – 5 V Output & Li-Ion Protection

Power your outdoor electronics with this compact and smart 18650 solar charging PCB! Designed for low-power IoT projects like ESP-based sensors or automation nodes, this board combines a TP4056 charging module (with integrated undervoltage protection), a TPS61023 5 V boost converter, and two optional switches for flexible power management. The board runs from up to five 5V solar panels and supports one or two 18650 Li-Ion cells. Ideal for garden sensors, smart weather stations, and other mobile DIY projects. For full assembly instructions and detailed specs, visit: https://smarthomeyourself.de/18650-solar-platine This is a non-commercial community-driven design. Feel free to build and share it! ????️ Components & links below

18650 Solar Board – 5 V Output & Li-Ion Protection
 
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Story

 

This compact DIY board is designed to power small outdoor projects like ESP-based sensor nodes or actuators using a combination of solar energy and 18650 batteries.
It includes a TP4056 charging module with integrated protection, a TPS61023 boost converter, and switchable solar and battery paths for maintenance and safety.
The board delivers a stable 5V output and supports 1–2 batteries and up to 5 small solar panels.

 

 

 


📌Components used:

 

Video


https://www.youtube.com/watch?v=HXCUg6hba9w

 

Full details, schematics, and use cases can be found on my project page:

👉 https://SmartHomeYourself.de/18650-solar-platine

 

Note: The links above are affiliate links. If you use them, I may earn a small commission – this helps support my projects at no extra cost to you.

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18650 Solar Board – 5 V Output & Li-Ion Protection

Power your outdoor electronics with this compact and smart 18650 solar charging PCB! Designed for low-power IoT projects like ESP-based sensors or automation nodes, this board combines a TP4056 charging module (with integrated undervoltage protection), a TPS61023 5 V boost converter, and two optional switches for flexible power management. The board runs from up to five 5V solar panels and supports one or two 18650 Li-Ion cells. Ideal for garden sensors, smart weather stations, and other mobile DIY projects. For full assembly instructions and detailed specs, visit: https://smarthomeyourself.de/18650-solar-platine This is a non-commercial community-driven design. Feel free to build and share it! ????️ Components & links below

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