Review request for HKJ [USB Power Devices]

+1
I´m very interested in this.

I say “Fie!” to that! :slight_smile: I’m technically a homegamer too. Just a lucky one. Please consider writing TotalPhase expressing interest and perhaps they can offer a restricted suite for less.

Actually, it runs a webserver and appears as a network adapter. You plug it in, it adds an NDIS internet IP adapter, and you type in the box’s private IP address and you do all work through the web browser interface on the box. It’s all self-contained.

The only reason you’d need any of those utilities is for firmware updates, which are free on the website. The only consumable is the box on the left. It is “only” rated for 10k connector insertions… and the box keeps track with a monotonically increasing counter. This is again to prevent fraudulent data from factories when the connector wears out. There are also adapters to cover A-to-MicroB and C-to-A etc. cables. Pins are pins.

Please let me know if you would like to know more about the specifics of what to look for in USB-C cables.

  • The important part is to independently measure the IR drop (resistance*current at max capacity of 3A or 5A) on the Vbus and GND pins. There are different thresholds for each. (500mV Vbus, 250mV GND) due to data signaling concerns.
  • All 4 Vbus and all 4 GND pins must be tied internally in the connectors/cable.
  • Some cables also bridge GND to the shield braid of the cable to get a “free ground conductor”.
  • Some get it backwards and use the shield braid for Vbus, which is VERY dangerous!! Especially if the cord frays.
  • Some connect the shell to ground, others keep it separate.
  • USB 2.0 cords are NOT supposed to have SBU wires
  • SBU1/2 wires are supposed to be “crossed over”, like the SSTX/RX pins.

If you just need to do continuity checks, here’s an open-source Arduino Mega schematic I created. It’s fairly crude however: it doesn’t do resistance measurements since I don’t know how to make it accurate enough.

I apologize if I went off-topic.But I really want to help as much as I can.

Thanks for that, but do not expect a review in the near future, I have a couple of chargers in queue.

i hope you will continue reviewing blitzwolf powerbanks.
i pre-ordered one of their latest powerbanks:

do you think you will review it?
(i have the old xiaomi 4x18650 10400mah powerbank, and the single cell blitzwolf powerbank, but have been thinking about something in-between them as well, when this one appeared at a pre-order price of $12.99)

Blitzwolf sometimes send stuff to me for review, I do not know if I will get that power bank.
Due to the amount of items I have in queue I will not be buying it myself.

for comparison: https://www.youtube.com/watch?v=3Hdn0MuCK_0
Familiar looking box with 5 USB ports, beware the clones …

he’s dissecting what appears a well designed board with decent separation between AC and DC sides but a dead short somewhere inside

May I ask how to donate equipment to you? I’d be interested in your opinion of the Belkin F7U005bt04-BLK illustrated here. (Comment split from BlitzWolf BW-C4 thread.)

Or I can ask Jen Warren (Global Director of PR, Belkin) to send you a sample. I presume they have their own warehouses nearby, and would appreciate a counter-point to my initial criticism of this charger when used with the Google Pixel (Sailfish model).

https://plus.google.com/102612254593917101378/posts/dgqeFSM19bd

Please let me know what option is best with you, and I will endeavor to get it to you!

May I ask a review of the Xiaomi Dual USB car charger with Bluetooth? Xiaomi Roidmi 2S http://m.banggood.com/Original-Xiaomi-ROIDMI-2S-Dual-USB-3_8A-Dual-Mode-Bluetooth-4_2-Hands-free-Calls-Car-Charger-p-1042119.html

I wonder if they have correct overload protection.

I will add it to my queue.

Thanks! I have an older version and the Xiaomi car charger seems quite nice. I hope the inside is also good.

Hi, if you could please review this charger:

Xiaomi charger

Hello HKJ,

please consider the TOMO T4. Would be very interesting, since it allows the use of own cells.
http://www.tomopowerbank.com/shop/tomo-t4/

https://www.amazon.com/V8-4-Portable-Display-Battery-Charger/product-reviews/B013G6M4A8/
https://www.amazon.com/Aurabuy-External-Battery-Charger-Display/product-reviews/B00IM3NZ86/

It’s similar to the Soshine E3S.

http://www.gearbest.com/chargers/pp_493560.html

I wouldn't call it similar, i'd call it a clone/oem/made to order model :)

Tmart has it too, under their TLIFE brand. I did a video on one recently.

I have just posted a review of the TMart model: Test/review of TLife Power bank TC-01

Thanks!

I found this USB charger, which is unusual/rare because of the horizontal orientated ports. This makes it useful for USB Voltmeters on each port :slight_smile:
just-mobile.eu/alucharge-eu.html

Link is already adjusted for Denmark :wink:

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.