2A Dual port XHC10

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Official specifications:
I got it from Ebay dealer: china-town-us and selected model for "HTC One M9/M8/M7/Mini/X/V/XL/S/Max"

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Measurements


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Each output can deliver exactly 1.5A before the overload protection trips.

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And because they are in parallel the total output is also 1.5A, not the rated 2A.

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I could draw 1.5A for 1 hour without any problems.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.

Temp2917

M1: 44,2C, HS1: 56,2C
HS1 is the rectifier diode.

Temp2918

M1: 50,3C, HS1: 70,2C

Temp2919

M1: 61,8C, M2: 65,0C, HS1: 74,9C
M1 is the rectifier diode.

Temp2920

M1: 46,3C, M2: 55,3C, HS1: 58,8C

Temp2921

M1: 49,0C, HS1: 60,8C



10ohm

Noise at 0.5A load is 134mV rms and 1250mVpp

5ohm

Noise at 1A load is 87mV rms and 1080mVpp



Tear down

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Using my vice I could pop it open, but the plastic broke in the seam.

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On this side there is a fuse, a blue 1000 volt capacitor that will short on high voltage (Very bad). There is also a rectifier diode.

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Here the fuse, the blue capacitor and the rectifier diode can be seen. A close look on the capacitor will show the 1KV marking.

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On this side a bridge rectifier and a switcher IC can be seen.

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The isolation distance is 4mm, this is below requirements, but not directly dangerous. The dangerous part is the blue capacitor.

The charger passed an isolation test with 2500 volt, but failed a 5000 volt test and shorted between low volt side and mains, this makes the charger dangerous everywhere.



Conclusion

This charger has very bad safety, stay away.



Notes

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Read more about how I test USB power supplies/charger
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