Depending on what you want to do, it’s probably safer to not have it always output 12v all the time (accidentally plugging a 5v device onto a 12v output USB port will likely fry it…
Anyway, this may be what you’re looking for:
5v to 12v step-up USB cable to DC 2.1x5.5mm (5v/2A => 12v/750ma max — possibly good for some low-power/basic wifi routers)
(the step-up module converts the 5v to 12v (this works on any 5v USB power adapter or powerbank, even non-QuickCharge ones) but lower output current only)
(this one requests the power output from the power adapter / power bank itself)
oops, didn’t notice the QC2/3 trigger device already mentioned above…
(btw, I don’t think the RD Tech USB 2.0/3.0 meter posted above has a “trigger” mode).
Some other meters like the YZXStudio ones also have a QC2/3 trigger.
for instance, this example of a ZY1276 USB meter triggering a QC2/3 wall charger to 12v and powering a small DC12v fan:
12v @ 2.5amps = 30 watts, that seems more than most non-USB-PD power banks can supply. I wonder if a USB-PD trigger can be used to request 12v @ 2.5A (am not familiar with USB PD yet…) which requires a powerbank that supports Type-C PD output…
The above are just meant as temporary “quick-fixes” probably not designed for long-term use if you really need 12v @ 2.5A, better just get a real 12v power supply that can supply the current your 12v device needs…
I was interested in using QC2/3 powerbanks as a relatively cheap, readily available and safe way to power a portable Class-D amplifier off of lithium ion batteries. My plans to make a set-and-forget trigger fell by the wayside though when I realized the Blitzwolf BW-P3 I was using could deliver 3.6A @ 5V, or 18W without any QuickCharge negotiation, so I just fed that into a “low noise” (which is to say LC filter on the output) boost converter module and fed the amp off of that, no problem.
It will be interesting to see what develops with USB-PD.
There will be powerbanks delivering up to 100W with QC soon.
Currently power sources up to 89W for USB-C are available. In the future, more devices, cables and power sources will develop maximum power in this direction.
Pardon the late reply, I just got the Blitzwolf BW-C10 QC3.0 car charger the other day. I can confirm that it can quick-charge the Mi 20000mAh v2 (PLM05ZM).
I only did a quick check though. USB meter reports charging at 11.6v at 1.10A when I plugged the PLM05ZM powerbank to the BW-C10’s QC3.0 port. Not sure what is the highest current at 12v that the BW-C10 supports in real-world testing, will re-test when I’ve got more time (official spec says 12v @ 1.5A).
Not to mention the specs on that supposedly wonderful thing...
Charging time could be measured by the erosion of stones using 5V @ 1A ;) About 15 hours for a full charge!
so basically the PLM05ZM is THE BEST power bank of the world at the moment…!
of course among the 20k power banks…. going OVER is just stupid and corrupts portability
AVHzY CT-2 / KT001 meter and YZXstudio ZL1100 load. Testing the offline curve recording functions right now. I had the ZY1276 but the AVHzY is superior in every way.
Maybe you could do a quick-look mini-review of this USB meter in a separate thread? Looks interesting. Just did a Google search, it looks like the CT-2 is also marketed as the KT001 (Power-Z) and the Kotomi Premium (Kotomi “Pre”).
Many new USB meters with more powerful features have just arrived the past year, though one important functionality is interfacing with a PC software and to be able to record/graph/chart data values (which the ZY1276 unfortunately does not — it only outputs raw values, but no in-house PC software that can do graphs other than read values).
Of course, one other thing is whether the USB meter is as accurate as it says (4 decimal places is already very accurate, in my opinion). Unfortunately, would need specialized equipment (like HKJ) to verify that they’re really precise… I’d like to think that the ZY1276 is factory-calibrated to be accurate (can’t be sure if it really is though…)
Another thing is to allow the USB meter to be powered independently (so it doesn’t drain a minimal current from the USB power device it is testing, which affects the result) — ZY1276 doesn’t have this, but it looks like the KT001 can have independent power source so as not to affect results of the device being measured.
Recharge time 6hr 11min @ 12V/1.6A max (with QC)
I don’t have a QC charger, but I do have a charger that can deliver 3.5A over a standard USB micro cable.
So my question is: Can the PB charge fast without QC but high amp ‘regular’ charge at 5v?
Better interface, easier navigation with 3 button, QC trigger, MFi authentification, USB PD support, PD listener, more user friendly Desktop app, internal memory for 5 graphs… and the list goes on
