DIY LiPo Charge/Protect/5V Boost Circuit




Introduction: DIY LiPo Charge/Protect/5V Boost Circuit

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

In this video I will show you how I combined a couple of ICs in order to create a charge/protect/5V boost circuit for a single cell LiPo battery. Along the way I will show you how I designed the PCB, how I ordered it and what kind of problems occured while soldering the components and testing the circuit. Let's get started!

Step 1: Watch the Video!

The video gives you all the information you need to create your own Charge/Protect/Boost circuit. In the next steps though I will present you some additional, helpful information.

Step 2: Order the Components!

Step 3: Create the Circuit/Order the PCB

Here you can find the schematic of the circuit and the Gerber files. You can use them to order the PCBs with JLCPCB:

Or you can simply open my EasyEDA project with my board design and click the fabrication output button:

Once you receive the PCBs, all you have to do is solder the components to it with the help of the schematic.

Step 4: Success!

You did it! You just created your own LiPo Charge/Protect/5V Boost circuit

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

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

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16 Discussions

I know this was posted months ago, so I apologize for necromancing this thread.

In the parts list, two 22uF ceramic capacitors in package size 1812 were used. But of all the components, these LCSC #C28504 are the most expensive - 0.81 USD at the time of this writing. If you wanted to build 10 of these boards, you're nearly $15 USD just for these capacitors.

I suspect you selected these because you already had some on-hand. But this leads me to a question...

Is there any reason a capacitor of the same or similar values (eg. LCSC #C129303) could replace this? The latter cost currently 0.07 USD. I think the answer is no, but I want your opinion.

Now this leads to another question about making the board a little bit "modular"? What I mean to ask is, in your experience, is it reasonable to create a board that will accept the same part in a different package sizes on the same, largest pads? I've attached a picture to help clarify.

The best reasons I can think of are

1: It could be confusing, complicates or messes up the BOM

2: It's (probably) not a best practice, or for some reason frowned upon.

3. EasyEDA might not let you (still inexperienced, so I don't know the answer to this.)

What are your thoughts on this subject?


Don't waste your time on this. It's nothing more than an a PCB vendor promotion.This is yet another junk circuit from JLCPCB.I got PCB from jlcpcb, but cannot

recommend them (cheap, but bad quality)

I modded the device to 12V, but unfortunately the step up driver gets very hot when it is loaded with a 400mAh load. I added a heat sink so the circuit does not enter the overheat shut down protection but it still gets very hot. I added a thermal image after using it for 10 minutes. You see around the step up switcher ic, the temp is at 70 degree Celsius.


Regarding ordering components from LCSC - I see on their website a "BOM TOOL" which can import a spreadsheet listing all the components. So, why not include a parts spreadsheet?

Awesome...always love your designs and things!
Shared this at OSHPark for another way to order the boards...

why did you choose 603 parts.


11 months ago

Awesome! What should I change if I want the exact same characteristics but with an output of 3.3V?

4 replies

Try creating a voltage divider on the output of the circuit.

but it s a boost converter ic , i don.t think you can get lower than the 4v or input voltage of i.c

voltage divider maded by 2 resistort and midle to fb of boost ic .

Would more than one amp (about two) be possible with some small changes?

1 reply

I've tested out boards from Amazon, and milled out my own version of Great Scott's, you can get 1amp easy with the MT3608. However, due to the current limiting factor of my lab bench power supply I could get it to only get to about 1.3amps or so. The power supply reaches the 3 amp current limit. Keep in mind if you are planning to pull 1amp or more from the MT3608, while possible, the chips get very warm, and the voltage drops to about 4.8vdc.

I would make sure the coil and schottky diode can handle the extra current. The diode that GS uses should be more than adequate. BTW, according to the MT3606 data sheet, the schottky diode recommendation formula is SQRT(Iout×Ipeak).

Hello, It is a good project. I have couple of LiPo batteries and I use them on same way but not on one board :(.

I use TP4056 with protection board DW01A and I solve the problem for low voltage protection for LiPo with use of voltage divider on 100 ohms resistor on pin that read VCC.

I see this from one Russian blogger, he use diodes for voltage drop, but I thing why to not add one resistor to ground :).

Stumbled over here looking for PCB tutorials. I always enjoy seeing a new 'ible from you! can wait to see the video!