I have tested one: Performance test of 5V to 12V 6W boost converter
The usb input connector was not mounted, but as can be seen it has holes for it.
Oh, great!
Thanks 
There are so much reviews on your website…
Can you please tell me if it’s good enough for powering small DSL-Routers like a Fritzbox 4020?
They usually have around 5W.
This one is rated for about 0.5A at 12V, but can deliver 1A (For a short time).
I do not like that type of devices!
When I want to zap something I uses more serious equipment and that would probably also zap the test shield.
But any equipment rated for mains usage must survive this test.
PS: That tester is a bit on the dangerous side.
Such a device with a higher discharge current than 3A would be even more interesting.
What about this two?
I own something like that 6-in-1 thingamajig. Basically it’s 3 loads you can combine : 0,5A, 1A and 2A.
At least that’s what they’re supposed to be, they’re ceramic loads, so it may ‘vary’ a little.
It’s also equipped with a bunch of LED’s on the back, which consume about 0,8A and you can connect 4 more loads/devices to it.
Don’t believe mine has the mini/micro)usb connectors, but otherwise it’s identical…
Back in the day, before I had fancy electronic testers and loads, this is what I used to test stuff. It’s quite old…
I might take a look at them.
The problem with usb isolators is that they only support fairly slow speeds.
Please consider to review following devices:
YZXstudio 8th Gen powerbank DS2784
Omnicharge PowerBank
PLX Devices Legion Portable Battery Charger 11000mAh
Where can I buy it?
That is a Indiegogo project, I may look at it when I can get it from a shop.
Shipping is $22, that is a bit much for a $40 device.
Forum members order by email from Franky Tong, tong@franky.com
YZXStudio 8 Power Bank Review (4x18650) - #29 by will34
Shipping on the PLX Legion is a bit more than ususal, but this device has been the first powerbank with OLED. And also multiprocessor (temperature, voltage, current, etc.).
It’s currently in the selling out phase, the black one and the smaller 5.500mAh capacity already sold out.
It’s also availiable on eBay:
http://www.ebay.de/itm/152042348931
There's currently the Vitebo VTB-28 on sale for 24€ instead of 40€ at reichelt:
reichelt.de/Mobile-Powerpacks/VTB-28/3/index.html
Also very interesting is the Vitebo VTB-80A with 2(!) microUSB inputs:
vivis-home.com/pd.jsp?id=37
What the heck is that?
I have ordered one and maybe I will do a review (If I can figure out what it is).
For now I believe it is a usb charger (Power supply) with a bluetooth sound receiver that is routed to a jack connector.
I am taking it easy with power banks, i.e. I will not be buying any at the moment (I have some I bought a long time ago that I did not get time to review). Reason to review a power bank is:
- It is very interesting (Like the YZX studio, but is must be possible to buy in a usable version).
- Somebody send my one (Like Blitzwolf).
When I am lower on usb chargers I will probably review more power banks with less reasons 
but that is a couple of months away.
Have you reviewed Ugreen chargers? They’re a pretty well known brand in China making quality components and cables.
I’ve tested one of their cables, and they are very nice quality.
I have one on the way.