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⚡ Charge Smarter, Not Harder — Know Your Power Like a Pro!
The YOJOCK USB C Tester is a compact, multifunctional digital multimeter designed for professionals and tech-savvy users to monitor USB and Type-C charging performance. It measures voltage (3.6-32V), current (up to 8A), capacity, power, and more, featuring an upgraded 8-mode IPS color display for easy data reading. Compatible with the latest fast-charging protocols (PD3.0, QC3.0) and a wide range of devices including iPhone 13 Pro and MacBook, it also offers advanced safety protections to prevent damage. Ideal for diagnosing charging issues and testing power bank capacity, this tool is a must-have for anyone serious about power management.
| ASIN | B09T3KHBFL |
| Best Sellers Rank | 9,014 in DIY & Tools ( See Top 100 in DIY & Tools ) 10 in Multi Testers |
| Brand | YOJOCK |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,137) |
| Included Components | USB Tester |
| Item Dimensions | 7.1 x 3.2 x 1.2 centimetres |
| Item Weight | 40 Grams |
| Manufacturer | YOJOCK |
| Manufacturer Part Number | UT003 |
| Maximum Operating Voltage | 32 Volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 3.7 Volts |
| Model Number | FT-ut003 |
| Power Source | USB Powered |
| Specification Met | CE, RoHS |
| Style Name | Modern |
| Unit Count | 1.0 count |
S**V
Great Diagnostic Tool for Tracking Charging Problems
Purchased this to test the USB-C ports on my Mac and phone after experiencing charging problems. The tester provides clear voltage and current readings, which made it easy to identify whether the fault was with the cable, charger, or device port. Having both USB-C and USB-A support is very helpful as it works across all my chargers. Straightforward to use and very informative. A useful diagnostic tool for anyone troubleshooting charging issues.
�**�
Neat & compact tester. Comes with Micro-USB adaptor.
I did pay for this myself and it isn’t part of the Amazon Vine Program. I do have one of these under another brand but needed a 2nd one and this looked the best value at the time. These do seem to be generic, with some having a brand name on them and others don’t. As I test a lot of charger and cables, these are really great for seeing what is happening vs. the spec. Where this differs from similar products is that you can go from USB-A to USB-C and visa versa. I have another design that, if you plug one end into a USB-A port, then the other end must also be plugged into a USB-A port as well. Personally, I find that too restricting. You can change the display arrangements but some are tricky to read due to the amount of info it’s displaying, that is unless you’re up close. I tend to focus predominantly on a setting which shows me Volts, Amps and Watts at that time and ongoing. It is easy to use and the display is clear, if a bit small sometimes. You even get a Micro-USB adapter included and a simple plastic storage case. Pricing on this specific design does tend to fluctuate quite a lot depending on the brand, I paid £16.74 for this one, but have seen these (not this specific one) for £25 upwards. For the price, I thinks it is decent value and highly portable. I did run a comparison test compared to the other one I had, they are exactly the same device, and the readings were the same on both. I hope you found this review & photos interesting, informative, and useful. Thanks for reading.
M**A
Nice and useful bit of kit
Proving to be really useful at identifying which chargers and leads are capable of delivering a reasonable output charge to our devices.
M**N
Works very well
Very clever little tool
P**A
Amazing and something for testing and curiosity
Something like this is great to have around to test the quantity of energy delivered throughout the cables or the plug ....
C**L
Does what it says on the tin.
Just plug this guy either between your power supply and the cable to the device, or between the cable to the device and the device itself, and it tells your the V, A, and resulting wattage. I don’t own like, a commercial grade power meter to verify the accuracy, and since this is just a little, cheap device not by a major company it’s not reviewed by sites that would do that kind of testing. Since it was pretty cheap though — and well rated on here — I figured I may as well give it a go after investing in a high wattage wall adapter and cables. I definitely noticed my devices charging considerably faster and so was quite sure fast charging was happening. This guys readouts aligned perfectly with the results I was getting and so I feel this device is pretty accurate and worked perfectly for what I’m using it for.
J**E
Great product
Outstanding..well chuffed with it..👍😁
S**N
Does a job
It works, it gives the info I needed - plus a load of other measurements that I didn't. It's OK I suppose, just a bit fiddly and quite hard to read in some applications. It's also flimsy and I can't see it lasting too long...
J**C
Funciona a la perfeccion, para saber la carga de diferentes cargadores que tenia por casa y en la oficina, asi puedes comprobar si realmente cargan a la potencia que dicen. Da mas informacion de la que necesito, es muy completo y esta hecho con calidad, buena compra.
A**E
Gebruiksvriendelijk, nuttige informatie over laadstroom, lader capaciteit en over ondeugdelijke kabels!
J**U
Wszystko OK , działa jak powinno , polecam Ogólnie mniej niż doba od kliknięcia i przesyłka była dostarczona , szok!
H**N
Underbar sak som gör sitt jobb väl. Där ser man om det drar någon ström eller inte laddar alls. Bra verktyg.
D**M
It is working now, it looks very good, for how many days the display and device work well ❤️🩹
Trustpilot
2 months ago
2 weeks ago