Original OEM Fast Car Charger FB-001-QC2.0

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Official specifications: I got it from ebay dealer: cnfu7527

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No fancy box for this charge, just an envelope and a plastic bag, but it did include a USB cable.

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The fake QC specifications.

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Measurements

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The QC marked output can deliver about 2.6A

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And slightly less at 24V supply

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The 2.1A marked output is exactly the same.

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And also when they are used in parallel.

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There was no problem running 1 hour with 2.1A load.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.

Temp6294

M1: 34.4C, HS1: 57.4C

Temp6295

M1: 39.3C, HS1: 51.4C

10ohm

At 0.5A the noise is 61mV rms and 353mVpp.

5ohm

At 1A the noise is 64mV rms and 406mVpp.

2.5ohm

At 2.0A the noise is 74mV rms and 556mVpp.



Tear down

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I could easily pull the front off, but getting the circuit board out I broke a capacitor!

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On this side is the two capacitors, the inductor and a led.

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The "fuse" is a zero ohm resistor. The switcher (U1: HC8813) is a 2.1A chip with 10V to 30V input range and support for cable compensation.

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Being a 12V device there is no need to test with high voltages.



Conclusion

This charger is a fake, it do not in any way support QC. With that said, it is an acceptable 2.1A charger, it is without any auto coding and has some noise.



Notes

Read more about how I test USB power supplies/charger
Compare car chargers and other DC supplied chargers