Seems like the ChargerLAB POWER-Z KM001 is quite well asked in this Thread (;
And I already have it, but have not looked at it yet.
There’s a QC & USB-C DIY powerbank with included LED light:
http://www.ebay.co.uk/itm/QC3-0-2-Input-Type-C-Dual-USB-9V-12V-5x18650-Fast-Charge-Power-Bank-Case-Kit-/162304734888?var=&hash=item25ca1db6a8:m:m_jQsqLkrIlAwsWqt032jCQ
From what I understand, the type-C is only for input (QC3 input); but not type-C USB Power Delivery. Output looks to be USB-A (I wonder if it supports 2xQC3 output. So far, I don’t know any power bank that supports dual (or more) QC3 outputs (maybe only the YZXStudio DIY powerbank?) I believe Anker or RAVPower (and maybe other “branded” ones) are already starting to release USB-PD powerbanks that support up to 30-watt output…
not sure if it’s the same as the one (8x18650 version instead of 5x18650) reviewed here:
I quote the ebay article describtion:
“Double input ports with Type-C and Micro USB interface. Support charging and discharging simultaneously”
Sure, Vinsic VSPB303B Aukey PB-Y3:
With QC and USB-C its possible.
I think that means it supports passthrough charging.
Otherwise the micro-usb would be would be in- and output too.
Hey, i’d buy one of this USB power Switch.
It’s even USB 3.0 
https://www.gadgethuset.dk/shop/85-diverse-computer-tilbehoer/3407-usb-taendsluk-knap/
https://www.google.de/shopping/product/11491495709799637935?prds=scoring:tps
There are also a lot of positive reviews:
https://www.amazon.co.uk/USB-OFF-SWITCH-3-0-HmbG/product-reviews/B00RC1NFEI/
Funny thing is that this is the only product of the company (:
http://www.hmbg-gmbh.com/HmbG-1401-USB-Switch-Product_Data_Sheet_EN.pdf
I wonder how much it does.
It is easy to switch power with a ordinary switch.
USB 3 cannot be switched with a ordinary switch, it requires a chip or a very special switch (I doubt that is the case).
They write that power and data connections are cutted.
I’d try it with an USB 2.0 Webcam and an USB Voltmeter and it seems to me like that’s correct.
@HKJ any good 6/8 variable output + display powerbank in the queue? I'm looking for Qidian but still open to alternatives...
Maybe YZXstudio 8th Gen 8-cell powerbank?
Or tthe Vinsic VSPB303B with LCD numbers:
http://www.vinsic.com/Products/sku-VSPB303B
Found this USB 3.1 Type-C Power Delivery Sniffer:
http://plugable.com/products/usbc-tkey/plugable-usb-3-1-type-c-power-delivery-sniffer-user-guide/
Seems to have a good reputation on amazon:
https://www.amazon.com/Plugable-Type-C-USB-C-Delivery-Sniffer/product-reviews/B015X29HLM/
That is a Indiegogo project, I may look at it when I can get it from a shop.
Now production seems to start in november, so maybe in 2018 some copies hit online shops.
Again some interesting power/cable metering/indication devices:
https://www.amazon.com/dp/B01LYJU6AG/
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https://www.amazon.com/dp/B06XJHGGYT/
This Xiaomi ZMI 20000 mAh?
https://www.gearbest.com/power-banks/pp_662137.html
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.
Here’s the Amazon page: https://www.amazon.co.uk/SmartPower-Technology-Raspberry-Readers-External/dp/B00XP727SS
Looks identical to 5-port power supplies sold under a lot of different names, doesn’t it?
Here’s another description of the thing: The worst gadget ever supplies mains power over USB | Boing Boing
That is “only” a QA problem, not a design problem with the charger.
> not a design problem
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.
It is not really surprising when you look at some of the cheap chargers, some of them are very bad in safety.