QC-MINI QC 2.0/3.0 USB fast charging board sells for $2

QC-MINI is a USB fast charging board that can take 6V to 32V DC input from a power source such as solar panel, and outputs 3 to 12V via a USB port using QC 2.0/3.0 and other fast charging standards.

The board can be useful to implement fast charging in any project, and it won’t break the bank as I’ve just come accross the module on IC Station for just $1.99.

QC-MINI USB Fast Charging Board

QC-MINI key features and specifications:

  • Input voltage – 6.0V to 32V DC
  • Output
    • 5V DC up to 3.4A by default
    • Fast Charging
      • QC 2.0, QC 3.0 with 9V @ 2.5A and 12V @ 2A support
      • BC1.2 protocol
      • Apple protocol
      • Samsung protocol
      • MTK PE1.1/PE2.0
      • Huawei Fast Charge Protocol FCP, does not support mate9 (SCP)
      • Spreadtrum Fast Charge Protocol SFCP
  • Safety – Overvoltage protection, undervoltage protection, overcurrent protection, short circuit protection, over temperature protection.
  • Misc – LED load indicator with brightness increasing with load
  • Dimensions – 38x20x10 mm
  • Temperature Range – -20℃~85℃
  • Humidity – 0% – 95% RH

QC 3.0 charging module

Typical applications would include solar panel to mobile phone charging, car charging retrofit, driving recorder power supply, and “household power supply transformation”. The $2 price tag initially looked really inexpensive to me, but afer looking for QC-MINI on Aliexpress, I failed to find the board there, but realized QC 3.0 car chargers – for example – are equally cheap going for less than $3 shipped. It remains to be seen whether those cheap QC 3.0 hardware platform do work as advertised.
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KinioJakub WędrowyczDimCampGarethMiha Recent comment authors
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0617
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0617

32955045499 on AliExpress =1.35
32955063881 on AliExpress =1.29
32947655155 on AliExpress =1.15
Search phrase is “USB QC3.0 DC DC”

Forth
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Forth
Diego
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Diego

I’m curious how it performs when connected to a dumb sink, like a rpi or similar. Also didn’t find any clue about USB PD, which might be interesting for SBCs with USB C, if properly supported.

Diego
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Diego

If qc3 is no requirement you can also get something for .74

https://m.aliexpress.com/item/32856994286.html?pid=808_0000_0101

T-C
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T-C

any buck&boost variant out there?

Julien
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Julien

I found as boost converter https://www.aliexpress.com/item/QC2-0-QC3-0-Single-Cell-Lithium-Battery-Boost-Power-Module-3-7V-4-2V-Liter/32954411451.html
It has TPS61088A chip. Normaly the cost much more when you are searching with is denomination.

Miha
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Miha

Bah all the boards are without the holes one could use to fasten them into some kind of enclosure.. e.g take 10 of them and a power supply and use this in small production line to charge batteries

CampGareth
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CampGareth

You could probably build a little holder with some nylon pins into a sheet of plastic and have the pins hold the board by the edges. If you’re using the USB port those output holes could also be used as mounting holes.

Dim
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Dim

Also ebay:
https://www.ebay.de/itm/DC-DC-9V-12V-24V-to-5V-Fast-Charging-Step-Down-Buck-Power-Converter-QC-MINI-USB/123556274863

It would be nice if it also had a full bridge rectifier and a small case for wall sockets.

Jakub Wędrowycz
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Jakub Wędrowycz

All of them can’t output 20V, only 12V, so not really QC3, only QC2

Kinio
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Kinio

I am thinking about building a smart docking station using 5 to 6 of this step down boards, a Bluetooth 4.2 aptx enable audio receiver and small stereo amp. All needs 16v to run. Can anyone suggest to me a good psu that provide power for all this components and won’t break my budget… Charging station will charge 2x huawei p10,Samsung s9, linx tablet and power bank so I want to use separate boards for every usb port to make sure that ports are working with right protocol and delivery adequate current to each device… Sorry for my bad English