kws-x1 usb tester from kowsi  - Page 1
Forum section: electronics / general

author: zerkis
author_rank: Newbie
timestamp: March 19, 2025, 10:50:39 am
content: i've ordered kws-x1 usb tester on aliexpress recently and i've tried to find people who have bought it and on youtube there is only one video. i think it is quite new i haven't seen it on aliexpress before. But the thing that caught my attention is the capability of the device it can diagnose the ripple of the power supply,trigger pd,test pd and more. I think it really has a big potential for firmware upgrades. unfortunately i don't understand enough programing to try and modify the firmware. if anyone is interested to look into it.

author: tom66
author_rank: Super Contributor
timestamp: March 19, 2025, 01:34:53 pm
content: I've got the basic KWS-2302C dongle for seeing how much current and at what voltage a USB-C device works at, it's quite a neat device. It wasn't very expensive and based on comparative measurements made by my laptop's BMS, it seems to be reasonably accurate.

author: thm_w
author_rank: Super Contributor
timestamp: March 19, 2025, 10:33:27 pm
content: The Fnirsi also does ripple as well, but the UI is horrific.https://www.fnirsi.com/products/fnb58At least this one has multiple buttons, that might help.https://www.eevblog.com/forum/testgear/which-usb-power-tester-do-you-recommend/https://www.eevblog.com/forum/testgear/fnb58-app/

author: nieldk
author_rank: Newbie
timestamp: May 21, 2025, 11:53:51 am
content: There is a flashing tool, and updated firmware (v1.0.2) listed herehttps://mysku.club/blog/aliexpress/102921.html

author: schmadde
author_rank: Newbie
timestamp: June 21, 2025, 10:27:29 am
content: Quote from: tom66 on March 19, 2025, 01:34:53 pmI got one of those, too. While it looked nice at first, I consider it the worst piece of junk I ever bought concerning USB "Multimeters".It measures o.k. in the 5-15V range at lower power settings, but at 20V 45W+ the energy count is completely off (by at least a factor of two!), while voltage and current look reasonable, and even Capacity looks reasonable.At 28V even the current is way off (again, by about 2* factor) and energy counted is only a fraction 1/5 of values measuered by every other equipment I have.Does your Meter show the same behaviour?

author: tom66
author_rank: Super Contributor
timestamp: June 21, 2025, 10:29:32 am
content: Quote from: schmadde on June 21, 2025, 10:27:29 amIt seems to be accurate at 20V in terms of voltage, current and power, I have no devices that operate above this voltage to confirm if it is erroneous above that point.

author: schmadde
author_rank: Newbie
timestamp: June 21, 2025, 11:01:32 am
content: Quote from: tom66 on June 21, 2025, 10:29:32 amVoltage, current and power look ok on mine too at 20V. But energy count ist completely off and that is what I care most about (I use those devices to measure powerbanks frequently)At 28V also Current is wrong.

author: CVN-5510
author_rank: Newbie
timestamp: June 27, 2025, 06:19:37 am
content: Коллеги с 4PDA выложили новые прошивки для Kowsi-X1: 1.0.3 и 1.0.4Там появилась функция проверки кабеля с E-Markerhttps://disk.yandex.by/d/LE5O7s4li4FFiQ/в разделе "Тестеры других производителей" - Kowsi-------Те кто эти прошивки установил, говорят что они портят определение протоколов.Ставить пока не стоит !!!!!

author: gnif
author_rank: Unknown
timestamp: July 01, 2025, 06:23:19 am
content: Quote from: CVN-5510 on June 27, 2025, 06:19:37 amThis is an English forum, if you're not wiling to post in English please find a community that is in your preferred language.

author: Teetanium
author_rank: Newbie
timestamp: July 25, 2025, 12:35:11 pm
content: Firmware v1.0.4 support check E-marker:https://drive.google.com/file/d/1kQRsacXMCYl7J0iXY8z0MHr-mgAhhsHx/viewPress and hold the Back button and the OK button at the same time to enter Bootloader

author: Magnets
author_rank: Contributor
timestamp: October 04, 2025, 08:47:03 pm
content: Is this thing able to remember PPS trigger settings? i.e. set it to 24v, remove power, re-power. does it remember to trigger 24v?

author: u666sa
author_rank: Frequent Contributor
timestamp: October 05, 2025, 12:17:41 am
content: I've got witrn u3 and c5 with aluminum bodies in cherry red