Well, this Satechi Type-C Power Meter seems to be making the rounds on some of the techsites I read :
But the $30 dollar pricetag seems a little high for a UPM without any form of logging or analysis like the YZXStudio's.
Banggood sells a combination USB-charger with wall outlet. I doubt they are good, but a test would be interesting.
http://m.banggood.com/5V-2A-Dual-USB-Port-Wall-Charger-Adapter-EU-Plug-Socket-Power-Outlet-Panel-p-1107847.html
I would buy a certified socket from a respected retailer in your country so you know it has passed all the safety tests.
I bought 4x UK USB sockets from china, I found that the earth connection did not make contact with the plugs earth pin at all on any of the 4, I contacted the seller and got a full refund and binned the possibly lethal sockets.
Buy quality when you are working with mains ac voltage.
John.
Well for that price you have almost ever issues. I don’t know if a good one exists, the thing from Busch & Jaeger has below 1A and for the price of this http://www.amazon.de/dp/B018KM3QVE
you get two x6 Anker USB charger.
@HKJ
If you consider these, please very thoroughly test
- heat development (especially with one cell discharge)
- unbalanced charge termination and
- low discharge protection.
My Soshine E5 (aka TOMO V8-3) has serious issues in all these departements.
Gravest one: 2 cells in parallel went down to ~2.15V over night; I then tested with a single cell (just left in the case, nothing attached) and halted the test at 1.86V resting. Pretty scary.
I like the design of that one, but I do not like the price. It is a bit expensive to buy and just open up.
At the current time I cannot test advanced usb-c, i.e. I cannot test this. I might return to it when I have a setup that can handle the testing.
I already have this one in queue.
I will probably also take a look at this one.
I have already published the review of the TLife version, it did not have all these problem.
22% off for valentines day with code JM201702 (valid 08.02 - 14.02.).
Also i’d find a sketch of the layout of the JustMobile AluCharge.
The layout may not be safe, but these drawing are usual not very precise (Problem may be spacing between high/low volt at the transistor and rectifier). Some yellow tape will fix this (There will probably also be some around the transformer also).
What they have illustrated is fuse, two (probably) common mode coils, safety capacitor, switcher controller and transistor. The rectifier diode looks a bit strange with too many pins.
Bridge rectifier and opto coupler is probably on the other side.
With the discount it was “only” €56
I’m still not sure what I can buy to “play” with my usb-c devices. Any suggestions?
Seems there are many USB dummy loads and current meters but when you go USB c they get sparse.
fsp-group.com.tw/index.php?do=pressinfo&id=255
newertech.com/products/nupower-usb-c-power-adapter/
trust.com/en/product/21478-moda-universal-60w-usb-c-charger
trust.com/en/21478/leaflet/en-GB
google.com/search?q=8713439214789&tbm=shop
satechi.net/index.php/satechi-type-c-power-meter
If you’re handy with the computer get a “Twinkie” (Type-C Power Delivery Sniffer)
https://www.amazon.com/dp/B015X29HLM
Or this one just for volt / amp measurements:
https://www.amazon.com/dp/B01NAWYSVK
Be careful with untested USB C chargers, even though it is the future of USB connectivity, it is still very unsafe. It might take a couple years for it to fully standardize.
You could take a look at YZXStudios stuff, like the ZY1271 which has two usb-c ports and ZY1273 which has one. I shot an e-mail to Franky Tong for some info on obtaining one or both.
wow the YZ1271 is a thing of beauty. I dread the price but heh the good things in life are often bloody expensive 
The ZY1273 is $42,99 shipped from Franky, I already know that, so I expect the ZY1271 to be about the same or maybe a few dollars more. As soon as I get a reply, I'll post more info.
Hi @HKJ Could you explain the importance of Y-capacitors in chargers and its relation to touchscreens?
Thanks
I did explain a bit here: How does a usb charger work
It reduces the electric noise generated and touch screens are sensitive to some electric noise.
The reason for the Y/safety capacitor is not so much for the touch screens, but due to legal reasons (The power supply would not pass CE & FCC test without it).
Thanks a lot for this. very informative.
Hello!
Lil question aimed at HKJ. I've observed certain USB power devices offer a relatively low output voltage. You once told me you measured output voltage from a small patch of cable, which without a doubt has less resistance than the actual 1-2m cables people employs (cable plus connector losses). I think this can mean those sources won't be able to actually fully deliver their rated current, as by the time it reachs the device voltage is too low and it would re-negotiate (lower) the charging rate. As a general rule, I'd start to be concerned with anything below 5.1V for USB power devices without load output voltage compensation.
Comments? 
Cheers ^:)
most of my supplies seem to provide ~4.95-5.05v direct from the supply rather than at the end of a test lead.