DIY Solar Battery Charger (LiPo/Li-Ion)

About: Awesome Electronics Tutorials, Projects and How To´s

In this project I will have a look at a commercial solar battery charger. That means I will conduct a few tests with it and afterwards create my own DIY version that improves the functionality of such a solar battery charger. Let's get started!

Step 1: Watch the Video!

The video gives you all the information you need to create your own Solar Battery Charger. During the next steps though, I will present you some additional information.

Step 2: Order the Components!

I got my components from LCSC.com: https://lcsc.com/

Here you can download the BOM files for the project. There you can find the part numbers. But feel free to check with the schematic whether you ordered all the required components.

Step 3: Order the PCBs!

Here you can find the schematic, board layout and Gerber files for the project. Feel free to upload the Gerber files to https://jlcpcb.com/quote to order 10 PCBs for cheap.

Or you can simply open my EasyEDA project with my board design and click the fabrication output button: https://easyeda.com/GreatScott/SolarLiPoChargeProt...

Step 4: SOLDER!

There is not much to say here. Solder all the components to the board and you are done. Feel free to use the attached pictures as a reference.

Step 5: Success!

You did it! You just created your own Solar Battery Charger.

Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab

PCB Contest

This is an entry in the
PCB Contest

Share

    Recommendations

    • Toys Contest

      Toys Contest
    • Comfort Food Challenge

      Comfort Food Challenge
    • Epilog X Contest

      Epilog X Contest

    8 Discussions

    0
    None
    georgek52

    11 days ago

    awesome work Scott. Can you please let me know what resistors I have to use for a 12v 10W panel?

    0
    None
    Efficient Sparks

    22 days ago

    Terrific job! Your tutorials are always so presice and consise. I will always await for the realease of new videos of yours!

    0
    None
    UmangG8

    5 weeks ago

    Nice hope to see u here .but can u tell me what software can i use to design pcb and schematic fan of urs and hope u would answer .easy eda doesn't work as i have a 32 bit laptop .....please help me scott

    0
    None
    Spike718

    6 weeks ago

    For those who are new such as myself there are additional components not in the Sheets.
    Resistors in the 0603 Package:
    100, 1K, 2k, 7.5K, 33K, 180K (if using 18V-21V panel), I May be missing a resistor if using 5V panel.

    LEDs: 0603 Package - Red/Green/What Ever Color

    Correction- If your going to use a 18V-21V panel you can use a 28K instead of using a 33K+180K- In parallel.

    More Parts:
    C84817 - MT3608 - saw it in the EDA tool after thinking about what is doing the step-up

    C32254 - FS8205
    - Saw it in EDA Tool.

    I think for a 5V panel, the resistors could be 8.66K for R9 and 2.74K but I'm not 100% sure on this.


    Total Items missing:
    Resistors in the 0603 Package:
    100, 1K, 2k, 7.5K, 33K, 180K OR 28K(if using 18V-21V panel)
    LEDs: 0603 Package - Red/Green/What Ever Color
    C84817 - MT3608 - DC-DC Converters Step-Up Adjustable 1 2V 24V 28V SOT-23-6

    C32254 - FS8205
    - MOSFET 2 N-Channel (Dual) 20V 6A 1.2V @ 250uA 28 mΩ @ 4A, 4.5V SOT-23-6

    0
    None
    CrazyW

    6 weeks ago

    Can I use arduino to adjust the mppt voltage ?

    0
    None
    Spike718

    Question 6 weeks ago on Introduction

    Thanks for the schematics and the videos!
    What LED # did you use? I wanted to try and make this but the sheet did not include the LEDs
    Thanks Again!

    1 answer
    0
    None
    jrock321

    6 weeks ago on Introduction

    This is a great project. I would like this with a potentiometer to adjust the mppt voltage.