Test/review of 2A Dual port XHC10

EDC Gear for Flashlight Carriers USB Power Devices
1

2A Dual port XHC10







Official specifications:

  • Protective circuit to prevent overcharging.

  • Use your existing USB charge/ sync cable for charging.

  • Pocket size, Compact, lightweight, durable, easy to take anywhere.

  • Plug Type: EU Plug/US Plug

  • Output: 100-240V 50-60HZ

  • Output: 5V-2A


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








Measurements

  • Power consumption when idle is 0.1 watt

  • Ipad usb output is coded as Apple 1A

  • Galaxy output is coded as Samsung

  • All outputs are in parallel.






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



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



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.



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



M1: 50,3°C, HS1: 70,2°C



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



M1: 46,3°C, M2: 55,3°C, HS1: 58,8°C



M1: 49,0°C, HS1: 60,8°C





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



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



Tear down



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



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.








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



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





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

Index of all tested USB power supplies/chargers
Read more about how I test USB power supplies/charger
How does a usb charger work?
2

Thanks HKJ! The soldering looks like i done it after doing a shoulder workout lol :stuck_out_tongue:
On a serious note this could turn your phone into a mains supply. I wonder how much power a standard USB cable can handle before it melts?

3

Yes. The power is not the problem, voltage is. Touching a phone with mains voltage on can be bad for your health.

4

HKJ can you recommend me an usb wall charger that I can buy from either Banggood or Ebay that is safe to use with 220v?

I really have bad luck when it comes to usb wall chargers from China, they get immensely hot and really fast too.

One even started melting :open_mouth: and I only use it to charger my Lumia 630, so I don’t even need 2A.

The Lumia 630 is a 0.75A draw device.

Thanks

5

Look at this list: Index of tested and reviewed USB power supplies/chargers
Anything without skulls is fairly safe (I do not test according to the full CE requirements therefore I will not say unconditional safe).
Then select the current and coding you need and find one with noise not below 40/400 (Noise level is usual not very critical).
When you have found a few candidates, check what I write in the review.

One candidate is Blitzwolf.