It supports QC 3 and USB PD 2.0 protocols. It means you can charge some USB-C notebooks (like Mi Notebook Air or Macbook Pro) or QC powered devices. Seems really good. Price is even better (40€ right now). Would appreciate a review!
Thank you
Here’s a “Big Clive” video teardown of one of those rectangular five-port-USB power supplies (this one labeled “Swees”) that leaked a potentially lethal mains 220v onto the USB side:
Bad assembly QA — transformer winding insulation had been scraped off during assembly, allowing the transformer to short internally, then the fault had been taped over.
Yep. The reviewer made the point that it was well laid out with good components, just poorly or carelessly assembled leaving a gap in the insulation on the transformer winding wires that put mains voltage on the USB side.
When I google ‘USB charger electrocution’ I see a surprising number of reports where the mains power somehow got to a person via a USB cable that should have only been carrying 5 volts.
I’m glad my utility only supplies 110v rather than 220v.
Can't find a real manufacturer name for it, but it comes in two models apparently
WEB-U3SE and WEB-U3MFi. Or WEB- is the brand, I don't know :)
But The MFi model looks like an affordable way to check lightning cables...
IIRC, there are 2 ways to check ‘certified’ MFi cables:
without connecting any load, the Lightning cable should have around 0.0004A (not sure how much tolerance allowed)
when switch to QC2/3 mode, and changing a voltage > 6.xx volts, the Lightning cable will not allow it (something like that, I can’t remember the details where I found it… will check)
So, the MFi likely uses one of the above methods.
The ZY1276 with latest firmware (Oct 2017?) is supposed to also add the MFi-checking feature…
Power bank supporting PD3.0 and QC2.0, have three ports, micro USB for input (QC2.0), USB C in/out (QC, PD3.0), USB A for output (QC3.0, PD3.0)
price is about 25 USD
ROMOSS PIE20 PRO 20000mAh Power Bank QC3.0 PD3.0 External Battery For iPhone8 iPhoneX Type C Two way Quick Charge PD3 Power Bank
I have a Lenovo P2 smartphone. It has a very large battery (5100mAh) which is charged very quickly when using the supplied charger (rated at up to 12V - 2A). This phone is sold in Germany and thus the charger supposedly meets all the safety requirements here (GS, TÜV Rheinland).