I’ve been messing around somewhat, thus far, I produced these :
I notice very strange things going on when playing around with QC charging…
Just got my YZXStudio 8th gen power bank. Seems quite good, when I tested it with a single Sanyo NCR18650GA.
Compared to a Miller ML102 (v9) it manages to squeeze out 11 % more energy (10.2 vs. 9.2 Wh) before shutting down. All while supplying a rock solid 5,13 volts from the usb output. I stopped measuring the ML102 after the output had dropped to 4.5 volts. Usually I consider 4,75 volts as the lower limit as per usb charging specs.
I just wired it temporarily to a 18650 holder before having 4 18650GAs spot welded to form a 4P pack.
!
It has been a year since I bought I bought my then ‘new’ YZXstudio usb monitor from Frankie Tong, and since then I have not kept up with the newer products.
This new powerbank has caught my interest.
I hope to read more about YZXStudio 8th gen power bank here or even have its own thread.
While searching online about YZXStudio devices, I notice there’s another model not yet referenced here: ZY1276, anyone who has this and have some first looks/reviews?
There’s also the ZL1100 load tester/protocol detector (it doesn’t have meter function? unlike the ZKE EBD-USB+ which is both a load tester and meter, but needs a PC and the software to view/control) from YZXStudio. There are a few reviews/images of the ZL1100 in the Chinese forum http://chongdiantou.com. But otherwise, similarly hard to find further info about it.
Found them in YZXStudio Taobao Store (in Chinese though, may need to use a translator…)
ZY1276:
USB快充協議測試儀電壓電流表容量QC4+PD3.1POWERZ檢測YZXSTUDIO - Taobao (select the image to the right that shows ZY1276)
ZL1100:
I have the new ZL1100 which is basically a more functional and accurate version of the ZL1000, I’m still trying to figure out some functions but so far it seems to be an excellent discharger. And because it draws external power it can also be used to discharge test batteries.
Took a while to program data logging via serial port but I finally managed to do it, however I wish there was an option to set reading intervals.
Let me know if you need to know anything else about the ZL1100
Fancy meetin' you here, d_t_a :D
I did a little video about the ZL1100 a while ago, use it quite a lot in cabletests on my channel.
Same offer as above, ask away :)
I'm pondering the ZY1276, but it doesn't really do anything that I can't already do with my collection of YZXStudio stuff...
Hi there dodge, Have you managed to set up the USB serial data logging? Do you know how to lower the data refresh rate like in the YZ1270 when logging via bluetooth serial?
Now I’m data logging at full speed at about 11 readings per second which is an insane amount if I were to do a 12-hour discharge test 
Nope, I'm afraid I don't use that particular feature of it.
I've got 4 EBD-USB' for that and I was getting tired of messing around with Excel for my graphs.
I need them timelapsed nowadays, for the videos, so that's why I use the EBD-USB's instead.
But I believe our buddy maukka knows a bit more about the USB serial data logging.
Hey! If you're gonna spam, at least spam some nice coupons along, dammit!
Thanks for the coupon :) If I hadn't said anything, we wouldn't have gotten that coupon :D
Dodge_911, nice to meet you here. Didn’t know you’re here. Am new here. =)
Anyway, just noticed your signature has links to data with cable resistances. I’d like to know the procedure you use to measure them (probably have to move to another message thread — I actually started a message / question about that in another thread here a few days ago).
I have some of the cables you mentioned — like the short flat micro-usb cable that came with the Mi 20000mAh powerbank and also the TronSmart 1.8m micro-usb cable; can probably make some comparisons by following your procedure (I only have a very few basic equipment though, so might not be able to actually replicate what you did).
Kaayee, I’m wondering if the other models, eg. the newer ZY1276, also support the Bluetooth module? If so, how is the module ‘installed’ to the ZY1276? (Unfortunately, I’m from a different part of the world than most people here, I guess… So Amazon isn’t exactly available to me, or if Amazon does ship to my location, the shipping cost will likely be more than the cost of the item itself. But the YZXStudio items has gotten my interest, but haven’t actually bought any yet…)
I will suggest you check my 1270 review:
1270 with Bluetooth: Test of USB YZXStudio ZY1270
There you can see how the Bluetooth module is installed and I will be surprised it the 1276 is missing that interface.
Hello HKJ, it seems there’s a new USB Type-C voltmeter from YZXstudio:
www.ebay.de/itm/YZXstudio-ZY12PD-USB-PD-PD2-0-ecoy-type-c-poller-fast-charge-trigger-detector-/122604161897
It do not look like voltmeter is the main function, but before I can play/test that I need a real USB-C power supply.
I'm also still kind of new here :) But, check out the first lightning cable test videos on my YouTube channel, that shows you one way you can measure voltage drop and calculate the resistance without YZXStudio meters.
Check the thread you started for more info.
There's probably more and better ways, but I don't know those :)
Many thanks KAAYEE!
After google translating the readme.txt I suppose the ZL1100-V100N00-170828.hex is for the old and the ZL1100-V100P00-170828.hex for the new version.
Can the version of the ZL1100 be determined by looking at the PCB or just trying to hold down OK when powering up the meter? Mine says ZL1100 V10 and doesn’t do anything when pressing OK while powering it up. And it doesn’t have the PD trigger as far as I know.
Could you please point out where exactly the short circuit should be made and clarify the updating process?
“Old version of ZL1100: short-circuit power supply next to the two circular pad, then the power Micro port connected to the computer.”
Hi Maukka,
You’re right that the ZL1100V100N00 is for old version and ZL1100-V100P00 is for New version.
I’ve updated the Readme doc to English version for easier way of understanding. You could re-download the ZIP file.
For quick way, I paste it below:
The way to confirm the version of ZL1100 USB Load.
- Put the USB Load on the table with fan attached towards the table and display screen upward.
- If the Type C port is to the left of the USB plug, it’s the old version.
- If the Type C port is to the right of the USB plug, it’s new version.
For the Old Version ZL1100, please use the firmware of: ZL1100-V100N00-170828.hex
The way to flash the firmware:
- Please short circuit the two round shape soldering pads that close to the power in Micro USB port of the ZL1100.
- Find a charging cable with Micro USB plug. Connect the USB end to PC/Laptop, and the Micro USB end to the power in Micro USB port on the ZL1100.
- The ZL1100 will boot to flashing mode with the display screen black out.
- Run the flashing software to flash the firmware.
For the New Version ZL1100, please use ZL1100-V100P00-170828.hex firmware.
The way to flash the firmware:
- Press and hold the OK button.
- Find a charging cable with Micro USB plug. Connect the USB end to PC/Laptop, and the Micro USB end to the power in Micro USB port on the ZL1100.
- The ZL1100 will boot to flashing mode with the display screen black out.
- Run the flashing software to flash the firmware.
Hope this helps.
Dennis Z.
KAAYEE Tech
Seems I have the old model as I suspected. Starting the ZL1100 in firmware upgrade mode works (screen is blank), but the updater (STM32…exe) is in Chinese. It does recognize the COM8 port, but what baud rate and other settings should I use? Just pressing FLASH does nothing.
The last button in the right is “Start Flahsing”
The one you chose in the pic is “Read the Flash File”.
Will double check with the engineer to get the English software.