Heads up, when the PD Com switch is in the ON position, VBUS on USB A (IN and OUT) and USB C (IN and OUT) are all connected together. For instance in listening mode your laptop charger negotiated 20V, the type A connector at that instant was also being back fed by the same voltage. I also have the same Anker battery bank and I tried the same test you did and the Anker battery bank survived the test. We got lucky that the USB A on the Anker device has a high over voltage protection threshold. For listening mode power the FNB58 from the USB micro labeled “PC” instead, that bus is isolated from the main VBUS. Also I notice that in listening mode or trigger mode sometimes the FNB58 wasn’t finding my device or charger. Turns out that the for these tests the cable orientation matters, at least for the cables I was using. If you are having trouble connecting in these modes try disconnecting the type C mainly at the FNB58 and rotating it 180 degrees. I haven’t really researched this, I will later, but I think it has to do with the CC lines being only located on one side.
Yes, you're right, you should only use the PC port for PD listening feature. But all good-quality power supplies typically have protection mechanisms in place to prevent voltage from flowing back into the supply when connected in parallel or from causing any damage due to reverse voltage. This is somewhat analogous to the concept of a diode, which allows current to flow in one direction but not the other.
@@ElectronicsComputers yea i agree, I won’t worry about a bench supply or a wall adaptor. But since USB A is an output only port a PC maker may only have a current limit IC inline with the 5V buck with an absolute maximum rating of 6V. If that’s the case applying more 6V on VBUS will definitely blow up the IC.
I appreciate some clear comparison of these USB testers, in addition to your other comparison video. Saved me a lot of time trying to figure out what did and didn't support older USB A\2.0 tests. The AVhzy C4 looked cutting edge with EPR etc. but had no easily apparent old USB testing support which I needed.
As an electronics enthusiast, I'm glad I came across of your video to choose which USB tester is best for my hobby, I almost bought the expensive one but this FNIRSI has got me and impressive of all the features. Thank you for this content.
I have a AVHzY CT-3 tester and it’s fantastic. I opted for it because it supports Lua scripting, which allows you to automate things like battery tests and whatnot. It also has the option for a load tester to attach to the back. The software is also quite good. I love it. Either way, you can’t go wrong with these two choices.
I've been using the AVHzY CT-3 for almost two years. It's a nice meter, and I've repaired dozens of laptops with its help. The only thing I don't like is its open case design. It's okay for home use, but in a repair shop, it's not ideal. I shorted some meters with tiny wires and screws that accidentally got inside and caused a short.
Just got this so I can test devices, but curious how it stacks up to the CT-3 there is one reason i really want that one, and its the load module so I can stress test devices to ensure they are up to spec and also have a fast way to get battery capacity. It just seems well made and nicely integrated. I can keep the 58 and get a generic load tester and it wouldn't be nearly as nice and cost may more. The advantage would be testing othet devices like power tool batteries, i can already do 18650 batteries with the charger i have. There is also now the CT4.
@@ElectronicsComputersYeah, that's the route I think I'm taking. They all seem kinda hacky yet still expensive for the ones I'm looking at. Do you have a specific recommendation? I ordered a 150w variable one that has a breakout board for USB. The nice thing about combining these two devices is I can verify readings from two devices and if the load doesn't negotiate a voltage/amperage I want I can use the 58 to spoof and get the power output I want.
These voltage testers are quite fun, would love to get some myself, but you have like 20+ different versions, ranging from cheap ones that are 10-15 euro to ones that cost 50+ euro.
@@ElectronicsComputers The FNB58 might indeed be nice. would have to see how much credits I can still get with aliexpress to make it quite interesting to get.
If you already have a PSU connected to the USB-C IN port, do you still need to connect the FNB58 to the built-in USB-A (male) port to a power source (in your case, it's a USB-A power bank)? Just wondering if I need to always power the FNB58 using that USB-A connector even though I'll be testing only USB-C PSUs/devices. Wondering because this seems to be the most versatile tester (also very nice interface), but if it needs to be powered by the USB-A male connector to test USB-C power sources, that's unwieldy and inconvenient. For now, I want to test the Baseus CCZX-100CO car charger I just purchased (let me know if you have any opinions on this charger as well) but I'd have to do it in my car. Here's a video I did just as a preliminary test to see it's capabilities between my Pixel 7 Pro and a laptop that can draw 65W. th-cam.com/video/mogYzbiRtBo/w-d-xo.html But I want to verify ALL of the protocols it claims to support. I'm a bit suspicious of a small car charger that claims to do 100W. Even if it does, I'm afraid of the heat it will generate. Thanks for a great video. You've earned my subscription!
No, you don't need to use a second power source. There's only one feature that requires a second power source, which is PD listener, and it should be that way. Baseus makes pretty good stuff, but I always recommend using Anker chargers if you can't buy an original one.
@@ElectronicsComputers Thanks for responding. Price was a driving factor, and the reviews seems genuine on Amazon (most complaints are about the dim display). Btw, when testing USB-C, does it pass through device negotiation? Example, if phone asks for 9v, will that request get to the charger, or do I have to use the tester to manually request it? Wondering if it's possible to accidentally request (for example) 20v when the device is actually asking for a lower voltage.
@@ElectronicsComputers I just answered my question but I don't like the answer. Sometimes it passes the negotiation,. sometimes it doesn't. When it does, it charges like normal and you can see what they negotiated on the display. Sometimes it just doesn't charge at all. Sometimes it charges at 5v 1A. There doesn't seem to be any rhyme or reason.
It also supports PD3.1, but you likley need to update the device for that software... i reckon the latest is 0.68 but nice build, and better the you usually you see from Fnirsi, just a shame that they skimped on the max & min averages..
To trigger MI-PD, you have to select that option, then unplug the USB cable and plug it back in. So, I guess it's challenging to add that feature to automatic mode.
Some devices will work flawlessly, while others may fail. It depends on the charge controller. I wouldn't force any device to accept a higher voltage, even if it's one of the supported ones. All USB ports provide 5 volts initially, and only after establishing negotiation between the power supply/charger and the receiving device, then voltage change to 9, 12, 18, or 20 volts.
@@ElectronicsComputers yes, i always wondered what happen if you force higher voltage. it useful when your phone supports fast charging with different protocol
Question - can I use that tester (or do you have a recommendation) for testing the cable itself - specifically impedance. I have a few devices where its important to be right on spec of 90
This tester can measure only USB cable resistance. I have never seen USB testers with impedance feature and I doubt they exist. You should look for some dedicated meters.
If you connect an old phone that doesn't support fast charging and only requires 5 volts for charging then, yes it will burn the charge controller. There's no need to turn those high voltage modes for charging your phone. Your device can do it on its own if it has that feature and this USB testers allows you to see those processes.
Very instructive video. Thanks for sharing. By the way, where did you get your USB C to Alligator cable? I looked everywhere, and I only find USB A to Alligator...
Good jobs. Please advise which device I should go for according to my needs - the options I came across are: FNIRSI-FNB58, RD TC66C, KM003C ChargerLAB POWER-Z, AVHzY CT3A and WITRN U3 or ?. The options are expensive for me to act on the "trial-error" scheme... I want a device with which I can test chargers, cables and power banks. I'm not too interested in graphs/curves, I want to be able to check also what protocols are supported by the tested devices (automatic check is better) by 2024. I only have basic knowledge of electrical and electronics, so "deep digging" and statistics are not my priority, as well as dangerous tests. At the moment I have ATORCH UD24 and J7-c - I guess they are not too bad but they are old, maybe not very accurate - not very up to date as of 2024. Thanks in advance to whoever gave advice.
Thank you for the comment! Well, the ATORCH UD24 that you currently have is a pretty good option that covers most needs. However, the best USB tester as of today is still the Fnirsi-FNB58. It is the most feature-rich device, allowing you to trigger all power delivery and charging protocols individually and in automatic scan mode. You can also check the resistance of USB cables to identify the most efficient and high-quality ones. Additionally, it can read the specs of the chip in the cable (if it has one). The scope feature is also beneficial, showing how "refined" the voltage coming from the charger is. Some cheap Chinese chargers have terrible filtering, which is not good for charge controllers in phones, tablets, and other devices. This tester has a very user-friendly interface. I use it almost daily and have never had any problems with it. Moreover, Fnirsi regularly posts firmware updates for their equipment, which is something other brands usually do not do.
@@ElectronicsComputers Thanks a lot for the quick reply. I also did some research - yes, FNIRSI-FNB58 is definitely a candidate for me. What worries me is that there are often cases, let's call it "incompatibility" with the tested devices. I assume this is also the case with other test devices. It's an expensive tool for me, and if it turns out that it doesn't "get along" with my devices, it will be unpleasant. Of course, there is no way to know without a sample. And what about the WITRN C5? What I've read is that it's just as good and rarely has problems like the FNIRSI-FNB58... Advice?
@@svilenp The only possible incompatibility with USB testers is if you have an old one that doesn't support new protocols or if you bought a new one from a brand that doesn't bother to make firmware updates for their devices. That's why I recommend buying Fnirsi. For example, with the latest update, they added power delivery PD 3.1 support. I haven't tested the WITRN C5, so I can't say anything specific, but I think your current tester, the ATORCH UD24, has pretty much the same features, if not more.
@@ElectronicsComputers Thank you for your response! Since I wrote here I've been poking around on the Internet and with my little knowledge of the subject I found myself at a crossroads between the Witrn U3 and the FNIRSI-FNB58. I should have added that the phone and charger I'm currently using is a OnePlus, which has something to do with the protocols (My current charger that I use to charge everything is the OnePlus Warp 65W, and my phone is the OnePlus Nord2 5G. The protocol is SUPERVOOC which is not available on many test devices. The charger has one USB-A port, so I have a cable (with the phone) USB-A to USB-C which ensures the speed of the protocol.). At this point I don't think I'm ready to go 100% to USB-C because otherwise I have to use USB-C to USB-A adapters sometimes (even for some Micro USB devices) and that will have an impact. If the FNIRSI-FNB58 has no problem with what I just wrote (SUPERVOOC, USB-А, Micro USB ets.) then I think my choice is clear?
Hi, Thank you nice review. When connecting the MacBook Air M2 2022 directly to a 140W fast charger, the charging speed reaches up to 70W. However, when the FNB58 is connected in between, it only shows 30W. Which settings need to be changed in the FNB58? The cables I used all support up to 240W/120W.
Have you tried reading the specs from the cable's chip? What power does it show? There have always been problems with Apple's devices, which is why, for repairing and testing Apple's products, I use a USB tester that can be directly plugged into the laptop's USB-C port without using any extra cables.
I also made a video where I tested the FNB48: th-cam.com/video/a7XaeHFuiPE/w-d-xo.html The FNB58 offers many more features compared to the FNB48. Unlike the FNB48, which has exposed PCBs and components, the FNB58 comes with a normal case. Additionally, the overall build quality of the FNB58 is way better.
Hey, nice video, thank you for sharing. I have same model USB Tester but with Bluetooth, and I don't have the one menu option you seem to have USB-C E-Marker. What firmware version do you have installed on the FNRIRSI FNB58? I have v0.68 firmware. Regards N
Thanks for checking for me. Is there any way to reflash without my PC installing their trojan, last time when i bough it, i updated firmware first, then saw Trojan, then rebuilt PC> I don't want to rebuild th e PC again for a firmware update, and on their site today FNIRSI i could have sworn firmware only for this model latest Firmware v0.62? The chinese thy courting backwards? i@@ElectronicsComputers Ill check again, but anyway to firmware update without PC you know of??
One last question for you my friend, if you have the time? You wouldn't know what these model numbers mean on ebay? FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P V1D9 FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P F1I3 1X(FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast 6669 FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P Z3N2 FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P X2D2 I'm struggling to understand which one is the latest/best the difference these days lol!!!
I have no idea what it means and where they found that information. For some reason you can only find it on eBay. Those testers have only two version with and without Bluetooth. The rest is absolutely identical. Firmware is upgradable on both versions. I recommend buying it from the official Fnirsi store on Amazon: amzn.to/48cCjul
Great video! What sort of functions can be used to test the quality of cables and usb wall plugs? For cables i would assume testing resistance would be best and maybe looking at ripples in the output of wall plugs. I generally never use quick charge and try to use the lowest output wall plugs to not degrade the battery on my samsung galaxy devices.
For your Galaxy devices, simply go to the battery settings and turn off quick charge. Your phone or tablet will then charge using only 5 volts instead of 9 volts. As for USB wall plugs, you can check the quality of the supplied voltage using a scope feature. If you have a load resistor, you can verify if the claimed charging current can indeed be drawn from the charger. When it comes to cables, you can check the resistance, but I've never encountered cables so poor that the difference between an expensive one and a generic one is noticeable.
@@ElectronicsComputers Thanks, that's exactly what I do and on top of that I use a samsung ETA0U61JWE 5V 1A usb wall plug, my galaxy s7 is still running perfectly 7 years later of daily abuse in extreme cold -30C and extreme heat +40C and the battery hasn't degraded significantly. What should I be looking at in the scope? Its hard for me to quantify and determine what wall plugs are objectively of higher quality and safety. Also have you ever seen wall plugs or chargers with manual variable output?
hi! Do you know a USB tester witch can limit a charge at 80% on non cellphone devices. I want charge my power banks pocket wifi and portable speaker at 80% charge all the time.
That would be great if such a USB tester existed, but unfortunately, it's nearly impossible to create one because there's no communication about the battery state between the charger and the battery. In theory, if you charge a completely drained battery, you can set a limit on the milliampere-hours (mAh) that the charger can pump into your device to charge the battery and stop charging at 80% capacity. However, if your battery, for example, has 20% charge remaining, it will still be charged to 100% with the same limit, and so on.
are you can calibrate the voltage? sometime device like this can drift and not pretty accurate, it will be handy if you can manual calibrate the device its self
It reads only the speed specifications from the cable's chip, which may or may not reflect the actual speed of the cable. There are no USB testers that can test a cable's speed.
The automatic detection mode doesn't represent the current your charger is capable of providing. It simply detects supported protocols. There can be several protocols rated at different voltages and currents. To see how much current your charger is capable of providing, you have to use a load, for example, like the one I showed in the video.
I just bought this tester and wanted to test a "26800mah" power bank I bought from Amazon. I don't quite understand how to read the results that's right in front of me. Lol. Is it a 9900mAh or 19600mAH capacity? Screen says the following: Battery CAP Calculation Group: 01 Time: 0 days 14:36:41 CAP: 9.92364 Ah NRG: 80.5495 Wh BAT Vol: 3.7V Conv Eff: 90% Results: 19.5931 Ah Thanks!
The battery capacity is about 19600mAh. If you performed this test with fully discharged power bank, then that result should be very close to the real capacity not advertised one.
The FNB48P has the same simple menu as FNB48 one and some features are limited. FNB58 is the best USB tester at the moment. The case on FNB48P is better in my opinion than on FNB58 but the set of features you get and a nice graphical interface makes it a perfect tool.
Kann der FNB58 mit aktueller Firmware nur 120 Watt? In den Spezifikationen steht maximal 120 Watt! Das schwächste PD3.1 Ladegerät kann 140 Watt! PD3.1 selbst geht bis 240 Watt.
Es gibt keine auf Verbraucher ausgerichteten USB-C-Adapter, die mehr als 140 Watt Leistung haben. Ich bezweifle stark, dass in naher Zukunft ein 240-Watt-Adapter veröffentlicht wird, da auf dem modernen Markt offensichtlich kein Bedarf für einen solchen Adapter besteht.
If you just need it for basic tasks and all your devices have USB-C ports, then I'd choose the Power Z KM003C. If you're doing some electronics repair or need a fully versatile USB tester for all possible cases and scenarios, then the FNB58 is a better choice.
@@ElectronicsComputersthank you so much. looks i need both. ok i will try this one first shipping on the go now. hopefully this is the end game for all my cheap usb c tester😁 Have a great day TYSM
Hi, you know how i can test accurate battery capacity?(battery CAP Calculation) if i test with default settings battery voltage: 3.7v and conv. eff: 90% i have more mah than real, tested against klein tools battery tester. i need move these battery settings?
Well, technically, to get the most accurate capacity measurements, you need to charge the battery outside of the device using a charger that can calculate the amount of mAh it pushes into the battery. Otherwise, the USB tester also adds to that capacity the amount of power the device itself draws from the circuit. Another problem is that we all know a lithium battery is considered fully charged when it reaches 4.2 volts and the nominal voltage for the battery is 3.7 volts. However, what is considered a fully discharged battery varies between devices, and there is no standard value. Typically, the safest low point is 2.7 volts, but usually, only power tools are allowed to drain the battery that low. Consumer electronics usually show 0% battery when they reach somewhere in the range of 3.2-3.6 volts. So, unless we have the datasheet for a specific battery, including details on what voltage is considered fully discharged, only then we can calculate its true capacity using an external charger.
Обновить его стоит. Детекшн уже версии 1.3, первой версии вешался часто. Глючно на китайских хай ватт зарядках реалми, оппо и т.п. работает. ТоварищЪ, у вас спешиал проносиэйшн, чую я. Успехов вам и каналу! ЗЫ: смена языка даёт приход от ютуба лучше?
You don't need to use the micro port. Just hold the button/wheel before plugging in a type C cable, and it works the same way. That's how I upgraded mine.
NEVER change voltage with the connected device to the USB tester. It may be fatal to that phone. All devices that support higher voltage during charging will switch on its own when the charge controller send the appropriate request to the charger. If you force it you will burn the charge controller.
@@zdnqds9546 That feature in the USB tester only for testing the power supplies and chargers. The devices like laptops, tablets, phones and some battery chargers can trigger different voltages depending on what they need. For example if you know that your phone supports fast charging and you bought some no-name charger, then using this USB tester you can check if that charger supports quick charge. Or maybe your laptop is not charging, then with this USB tester you can run a test to figure out where the problem lies in your laptop or charger.
The tester has a male usb-a plug. I plugged it into my dell inspiron 3668 which has 2 usb 3.0 ports on front panel. device says they're 2.0. can anyone try this?
It’s simply impossible to test Xiaomi's HyperCharge with this USB tester, and I’ve never seen a USB tester capable of doing so. The only option is to connect the charger through this tester to a Xiaomi phone that supports HyperCharge and observe the power ratings you receive. This way, you can determine whether it supports the HyperCharge protocol or not.
i dont think the cable spec check is useful. its surely not testing it in real time, its just reading whats in the EPROM probably, which could just be manipulated. so you will know at least your cable went thru extra step, whether it is indeed that spec, without a real load and real testing, it is just as useless i think.
Unfortunately, there's no tester that can determine the real specs of cables. Yes, the device can measure the resistance of the cable, but without knowing the cable length or wire diameter, you can't calculate the power it can hold. So you have to either enter those specs manually, or it will be just an estimated value based on cable resistance and the average wire gauge.
Thks but I thinks I'll wait until it does PD3.1 PS: Hmmmmmmmmmmmmmm FNIRSI FNB58 USB Tester ⭐ How to Firmware Update & Add PD 3.1 Support th-cam.com/video/k5vDx_qWqO8/w-d-xo.html
The .pdf manual is essentially useless. The website is likewise pathetic. How do you upgrade firmware from linux? Even if I used Windows, no way would I install software from some unknown CCP company. A tutorial that walks us through using it for usb port capabilities detection, then to other features would be useful.
Heads up, when the PD Com switch is in the ON position, VBUS on USB A (IN and OUT) and USB C (IN and OUT) are all connected together. For instance in listening mode your laptop charger negotiated 20V, the type A connector at that instant was also being back fed by the same voltage. I also have the same Anker battery bank and I tried the same test you did and the Anker battery bank survived the test. We got lucky that the USB A on the Anker device has a high over voltage protection threshold. For listening mode power the FNB58 from the USB micro labeled “PC” instead, that bus is isolated from the main VBUS.
Also I notice that in listening mode or trigger mode sometimes the FNB58 wasn’t finding my device or charger. Turns out that the for these tests the cable orientation matters, at least for the cables I was using. If you are having trouble connecting in these modes try disconnecting the type C mainly at the FNB58 and rotating it 180 degrees. I haven’t really researched this, I will later, but I think it has to do with the CC lines being only located on one side.
Yes, you're right, you should only use the PC port for PD listening feature. But all good-quality power supplies typically have protection mechanisms in place to prevent voltage from flowing back into the supply when connected in parallel or from causing any damage due to reverse voltage. This is somewhat analogous to the concept of a diode, which allows current to flow in one direction but not the other.
@@ElectronicsComputers yea i agree, I won’t worry about a bench supply or a wall adaptor. But since USB A is an output only port a PC maker may only have a current limit IC inline with the 5V buck with an absolute maximum rating of 6V. If that’s the case applying more 6V on VBUS will definitely blow up the IC.
I read this too late. The FNB killed my lenovo laptop with it's 20V from USB A port, which got 20V from the USB C PD. Stupid design
Excellent review!
Thank you kindly!
WOW! I have one, but You show lot of funcinailites, what is difficult to read from users manual! Its great device. Good job!
Glad it was helpful!
I appreciate some clear comparison of these USB testers, in addition to your other comparison video. Saved me a lot of time trying to figure out what did and didn't support older USB A\2.0 tests. The AVhzy C4 looked cutting edge with EPR etc. but had no easily apparent old USB testing support which I needed.
Glad it was helpful!
As an electronics enthusiast, I'm glad I came across of your video to choose which USB tester is best for my hobby, I almost bought the expensive one but this FNIRSI has got me and impressive of all the features. Thank you for this content.
I'm happy to help! As of today, it's this is the best USB tester on the market.
I have a AVHzY CT-3 tester and it’s fantastic. I opted for it because it supports Lua scripting, which allows you to automate things like battery tests and whatnot. It also has the option for a load tester to attach to the back. The software is also quite good. I love it. Either way, you can’t go wrong with these two choices.
I've been using the AVHzY CT-3 for almost two years. It's a nice meter, and I've repaired dozens of laptops with its help. The only thing I don't like is its open case design. It's okay for home use, but in a repair shop, it's not ideal. I shorted some meters with tiny wires and screws that accidentally got inside and caused a short.
The peelie’s left in the screens hurts my soul
Agree lol. However, the whole screen has a protective plastic layer, and it is attached to that peelie.
Great video. Thanks for leaving that last few seconds pitch black in the video. I thought my phone just died 😮😂
Happy to help!
Just got this so I can test devices, but curious how it stacks up to the CT-3 there is one reason i really want that one, and its the load module so I can stress test devices to ensure they are up to spec and also have a fast way to get battery capacity.
It just seems well made and nicely integrated. I can keep the 58 and get a generic load tester and it wouldn't be nearly as nice and cost may more. The advantage would be testing othet devices like power tool batteries, i can already do 18650 batteries with the charger i have.
There is also now the CT4.
You can use any load module with this tester as well.
@@ElectronicsComputersYeah, that's the route I think I'm taking.
They all seem kinda hacky yet still expensive for the ones I'm looking at. Do you have a specific recommendation?
I ordered a 150w variable one that has a breakout board for USB.
The nice thing about combining these two devices is I can verify readings from two devices and if the load doesn't negotiate a voltage/amperage I want I can use the 58 to spoof and get the power output I want.
These voltage testers are quite fun, would love to get some myself, but you have like 20+ different versions, ranging from cheap ones that are 10-15 euro to ones that cost 50+ euro.
If you just need a one USB tester packed with a bunch of features for all possible situations, then take the FNIRSI FNB58.
@@ElectronicsComputers The FNB58 might indeed be nice.
would have to see how much credits I can still get with aliexpress to make it quite interesting to get.
I would really like to see a USB cable toner for tracking those cables behind awkward places. But nobody sells such a thing.
Thanks - Great video.
You are welcome!
Great video.
Thanks for the visit
If you already have a PSU connected to the USB-C IN port, do you still need to connect the FNB58 to the built-in USB-A (male) port to a power source (in your case, it's a USB-A power bank)? Just wondering if I need to always power the FNB58 using that USB-A connector even though I'll be testing only USB-C PSUs/devices.
Wondering because this seems to be the most versatile tester (also very nice interface), but if it needs to be powered by the USB-A male connector to test USB-C power sources, that's unwieldy and inconvenient.
For now, I want to test the Baseus CCZX-100CO car charger I just purchased (let me know if you have any opinions on this charger as well) but I'd have to do it in my car.
Here's a video I did just as a preliminary test to see it's capabilities between my Pixel 7 Pro and a laptop that can draw 65W.
th-cam.com/video/mogYzbiRtBo/w-d-xo.html
But I want to verify ALL of the protocols it claims to support. I'm a bit suspicious of a small car charger that claims to do 100W. Even if it does, I'm afraid of the heat it will generate.
Thanks for a great video. You've earned my subscription!
No, you don't need to use a second power source. There's only one feature that requires a second power source, which is PD listener, and it should be that way. Baseus makes pretty good stuff, but I always recommend using Anker chargers if you can't buy an original one.
@@ElectronicsComputers Thanks for responding. Price was a driving factor, and the reviews seems genuine on Amazon (most complaints are about the dim display).
Btw, when testing USB-C, does it pass through device negotiation? Example, if phone asks for 9v, will that request get to the charger, or do I have to use the tester to manually request it? Wondering if it's possible to accidentally request (for example) 20v when the device is actually asking for a lower voltage.
@@ElectronicsComputers I just answered my question but I don't like the answer. Sometimes it passes the negotiation,. sometimes it doesn't. When it does, it charges like normal and you can see what they negotiated on the display. Sometimes it just doesn't charge at all. Sometimes it charges at 5v 1A. There doesn't seem to be any rhyme or reason.
I am just going to order it under Cyber Monday Deal. As I know it is the best devicein its kind today.
Yep! Good choice!
It also supports PD3.1, but you likley need to update the device for that software... i reckon the latest is 0.68
but nice build, and better the you usually you see from Fnirsi, just a shame that they skimped on the max & min averages..
1:24 MI-PD is Xiaomi's protocole, correct?
But it's not tested in the automatic detection menu?
To trigger MI-PD, you have to select that option, then unplug the USB cable and plug it back in. So, I guess it's challenging to add that feature to automatic mode.
@@ElectronicsComputers Interesting. Thank you
what will happen if you use fast charge test on a phone that supports fast charge? I mean manually setting voltage by tester, not by phone
Some devices will work flawlessly, while others may fail. It depends on the charge controller. I wouldn't force any device to accept a higher voltage, even if it's one of the supported ones. All USB ports provide 5 volts initially, and only after establishing negotiation between the power supply/charger and the receiving device, then voltage change to 9, 12, 18, or 20 volts.
@@ElectronicsComputers yes, i always wondered what happen if you force higher voltage. it useful when your phone supports fast charging with different protocol
Mine show error code 02 when power up with power bank. Is there a way to fix it?
Question - can I use that tester (or do you have a recommendation) for testing the cable itself - specifically impedance. I have a few devices where its important to be right on spec of 90
This tester can measure only USB cable resistance. I have never seen USB testers with impedance feature and I doubt they exist. You should look for some dedicated meters.
1:21 What does this mean on the screen? Will I damage my phone when charging it through this device?
If you connect an old phone that doesn't support fast charging and only requires 5 volts for charging then, yes it will burn the charge controller. There's no need to turn those high voltage modes for charging your phone. Your device can do it on its own if it has that feature and this USB testers allows you to see those processes.
Very instructive video. Thanks for sharing. By the way, where did you get your USB C to Alligator cable? I looked everywhere, and I only find USB A to Alligator...
Thank you for the comment! I simply bought a cable like this: alii.pub/6xk2hz and a USB-C connector: alii.pub/6xk2jj and made that cable myself.
Good jobs. Please advise which device I should go for according to my needs - the options I came across are: FNIRSI-FNB58, RD TC66C, KM003C ChargerLAB POWER-Z, AVHzY CT3A and WITRN U3 or ?. The options are expensive for me to act on the "trial-error" scheme... I want a device with which I can test chargers, cables and power banks. I'm not too interested in graphs/curves, I want to be able to check also what protocols are supported by the tested devices (automatic check is better) by 2024. I only have basic knowledge of electrical and electronics, so "deep digging" and statistics are not my priority, as well as dangerous tests. At the moment I have ATORCH UD24 and J7-c - I guess they are not too bad but they are old, maybe not very accurate - not very up to date as of 2024. Thanks in advance to whoever gave advice.
Thank you for the comment! Well, the ATORCH UD24 that you currently have is a pretty good option that covers most needs. However, the best USB tester as of today is still the Fnirsi-FNB58. It is the most feature-rich device, allowing you to trigger all power delivery and charging protocols individually and in automatic scan mode. You can also check the resistance of USB cables to identify the most efficient and high-quality ones. Additionally, it can read the specs of the chip in the cable (if it has one).
The scope feature is also beneficial, showing how "refined" the voltage coming from the charger is. Some cheap Chinese chargers have terrible filtering, which is not good for charge controllers in phones, tablets, and other devices. This tester has a very user-friendly interface. I use it almost daily and have never had any problems with it. Moreover, Fnirsi regularly posts firmware updates for their equipment, which is something other brands usually do not do.
@@ElectronicsComputers Thanks a lot for the quick reply. I also did some research - yes, FNIRSI-FNB58 is definitely a candidate for me. What worries me is that there are often cases, let's call it "incompatibility" with the tested devices. I assume this is also the case with other test devices. It's an expensive tool for me, and if it turns out that it doesn't "get along" with my devices, it will be unpleasant. Of course, there is no way to know without a sample. And what about the WITRN C5? What I've read is that it's just as good and rarely has problems like the FNIRSI-FNB58... Advice?
@@svilenp The only possible incompatibility with USB testers is if you have an old one that doesn't support new protocols or if you bought a new one from a brand that doesn't bother to make firmware updates for their devices. That's why I recommend buying Fnirsi. For example, with the latest update, they added power delivery PD 3.1 support. I haven't tested the WITRN C5, so I can't say anything specific, but I think your current tester, the ATORCH UD24, has pretty much the same features, if not more.
@@ElectronicsComputers Thank you for your response! Since I wrote here I've been poking around on the Internet and with my little knowledge of the subject I found myself at a crossroads between the Witrn U3 and the FNIRSI-FNB58. I should have added that the phone and charger I'm currently using is a OnePlus, which has something to do with the protocols (My current charger that I use to charge everything is the OnePlus Warp 65W, and my phone is the OnePlus Nord2 5G. The protocol is SUPERVOOC which is not available on many test devices. The charger has one USB-A port, so I have a cable (with the phone) USB-A to USB-C which ensures the speed of the protocol.). At this point I don't think I'm ready to go 100% to USB-C because otherwise I have to use USB-C to USB-A adapters sometimes (even for some Micro USB devices) and that will have an impact. If the FNIRSI-FNB58 has no problem with what I just wrote (SUPERVOOC, USB-А, Micro USB ets.) then I think my choice is clear?
@@svilenp The FNB58 supports SUPERVOOC and the rest of existing protocols.
SUMSUNG, nice, gives me confidence. Also no connect to monitor via USB C alt mode to DP Micro USB, in 2024? Really?
What Samsung has to do with Fnirsi USB testers?
Hi, Thank you nice review.
When connecting the MacBook Air M2 2022 directly to a 140W fast charger, the charging speed reaches up to 70W. However, when the FNB58 is connected in between, it only shows 30W. Which settings need to be changed in the FNB58? The cables I used all support up to 240W/120W.
Have you tried reading the specs from the cable's chip? What power does it show? There have always been problems with Apple's devices, which is why, for repairing and testing Apple's products, I use a USB tester that can be directly plugged into the laptop's USB-C port without using any extra cables.
hello sir, what is the different between fnb58 and fnb48p? what to buy fnb58 ($46) or fnb48p ($34)?
I also made a video where I tested the FNB48: th-cam.com/video/a7XaeHFuiPE/w-d-xo.html
The FNB58 offers many more features compared to the FNB48. Unlike the FNB48, which has exposed PCBs and components, the FNB58 comes with a normal case. Additionally, the overall build quality of the FNB58 is way better.
hi is USB marker now labeled USB data I have updated to the 0.68 firmware and I do not see usb marker but I see one called usb data
I haven't updated mine to the latest firmware version yet, but most likely they just renamed that feature.
Hello, would you say this is the best one currently available?
Yes, as of today it's the best one. And there's a new firmware available for that model with new features.
Hey, nice video, thank you for sharing. I have same model USB Tester but with Bluetooth, and I don't have the one menu option you seem to have USB-C E-Marker. What firmware version do you have installed on the FNRIRSI FNB58? I have v0.68 firmware. Regards N
I have the same firmware version. I'd try to reflash the firmware, that's the only thing that comes into my mind.
Thanks for checking for me. Is there any way to reflash without my PC installing their trojan, last time when i bough it, i updated firmware first, then saw Trojan, then rebuilt PC> I don't want to rebuild th e PC again for a firmware update, and on their site today FNIRSI i could have sworn firmware only for this model latest Firmware v0.62? The chinese thy courting backwards? i@@ElectronicsComputers Ill check again, but anyway to firmware update without PC you know of??
One last question for you my friend, if you have the time?
You wouldn't know what these model numbers mean on ebay?
FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P V1D9
FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P F1I3
1X(FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast 6669
FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P Z3N2
FNB58 USB Tester, Digital Voltmeter Current Tester USB Type-C Fast Charge P X2D2
I'm struggling to understand which one is the latest/best the difference these days lol!!!
I have no idea what it means and where they found that information. For some reason you can only find it on eBay. Those testers have only two version with and without Bluetooth. The rest is absolutely identical. Firmware is upgradable on both versions. I recommend buying it from the official Fnirsi store on Amazon: amzn.to/48cCjul
I need it!
the links in the description.
Great video! What sort of functions can be used to test the quality of cables and usb wall plugs? For cables i would assume testing resistance would be best and maybe looking at ripples in the output of wall plugs. I generally never use quick charge and try to use the lowest output wall plugs to not degrade the battery on my samsung galaxy devices.
For your Galaxy devices, simply go to the battery settings and turn off quick charge. Your phone or tablet will then charge using only 5 volts instead of 9 volts. As for USB wall plugs, you can check the quality of the supplied voltage using a scope feature. If you have a load resistor, you can verify if the claimed charging current can indeed be drawn from the charger. When it comes to cables, you can check the resistance, but I've never encountered cables so poor that the difference between an expensive one and a generic one is noticeable.
@@ElectronicsComputers Thanks, that's exactly what I do and on top of that I use a samsung ETA0U61JWE 5V 1A usb wall plug, my galaxy s7 is still running perfectly 7 years later of daily abuse in extreme cold -30C and extreme heat +40C and the battery hasn't degraded significantly. What should I be looking at in the scope? Its hard for me to quantify and determine what wall plugs are objectively of higher quality and safety. Also have you ever seen wall plugs or chargers with manual variable output?
hi! Do you know a USB tester witch can limit a charge at 80% on non cellphone devices. I want charge my power banks pocket wifi and portable speaker at 80% charge all the time.
That would be great if such a USB tester existed, but unfortunately, it's nearly impossible to create one because there's no communication about the battery state between the charger and the battery. In theory, if you charge a completely drained battery, you can set a limit on the milliampere-hours (mAh) that the charger can pump into your device to charge the battery and stop charging at 80% capacity. However, if your battery, for example, has 20% charge remaining, it will still be charged to 100% with the same limit, and so on.
are you can calibrate the voltage? sometime device like this can drift and not pretty accurate, it will be handy if you can manual calibrate the device its self
I have never seen USB testers with voltage calibration feature.
When I plug in my powerbank the Unit display error code 02. Does not open the main interface.
When you plug it into other devices, does it operate normally?
No it does not
Got feedback from FNIRSI. The microcontroller chip is damage.
@hardusvd Try to reflash the firmware. There's a new firmware update available.
I did reflash it the device. No improvement.
I'm new and confused, can I use this to test capabilities of my charging cables/wall chargers ??
Yes, you can but you also need a load to test all capabilities of chargers. The links in the description.
4:37 Can it test the data speed as well?
It reads only the speed specifications from the cable's chip, which may or may not reflect the actual speed of the cable. There are no USB testers that can test a cable's speed.
@@ElectronicsComputers The fact it reads the speed is already pretty nice. I must have missed it in the video
Is there a metal case version of the FNB58?
Both versions with and without Bluetooth have metal cases.
Does it has Windows software ?
Yes, there's a dedicated softwate for PC, and if you buy a Bluetooth version, there's also an Android app available in the Play Store.
@@ElectronicsComputers Is there a version for ios (iPhone)?
I have been testing some Chargers that are marked as five Volt 2 amp but when I do the automatic test it's saying it's 5 Volt 1 1/2 amp any ideas
The automatic detection mode doesn't represent the current your charger is capable of providing. It simply detects supported protocols. There can be several protocols rated at different voltages and currents. To see how much current your charger is capable of providing, you have to use a load, for example, like the one I showed in the video.
How many watts of Samsung charger do you use?
I use 15 and 25W ones.
I just bought this tester and wanted to test a "26800mah" power bank I bought from Amazon. I don't quite understand how to read the results that's right in front of me. Lol. Is it a 9900mAh or 19600mAH capacity?
Screen says the following:
Battery CAP Calculation
Group: 01
Time: 0 days 14:36:41
CAP: 9.92364 Ah
NRG: 80.5495 Wh
BAT Vol: 3.7V
Conv Eff: 90%
Results: 19.5931 Ah
Thanks!
The battery capacity is about 19600mAh. If you performed this test with fully discharged power bank, then that result should be very close to the real capacity not advertised one.
@@ElectronicsComputers yes...I tested it when it was fully discharged. Thank you!
Hiii what is the difference from finirsi fnb 48 p ???thnk u
The FNB48P has the same simple menu as FNB48 one and some features are limited. FNB58 is the best USB tester at the moment. The case on FNB48P is better in my opinion than on FNB58 but the set of features you get and a nice graphical interface makes it a perfect tool.
Kann der FNB58 mit aktueller Firmware nur 120 Watt? In den Spezifikationen steht maximal 120 Watt! Das schwächste PD3.1 Ladegerät kann 140 Watt! PD3.1 selbst geht bis 240 Watt.
Es gibt keine auf Verbraucher ausgerichteten USB-C-Adapter, die mehr als 140 Watt Leistung haben. Ich bezweifle stark, dass in naher Zukunft ein 240-Watt-Adapter veröffentlicht wird, da auf dem modernen Markt offensichtlich kein Bedarf für einen solchen Adapter besteht.
Power Z KM003C or this?
If you just need it for basic tasks and all your devices have USB-C ports, then I'd choose the Power Z KM003C. If you're doing some electronics repair or need a fully versatile USB tester for all possible cases and scenarios, then the FNB58 is a better choice.
@@ElectronicsComputersthank you so much. looks i need both. ok i will try this one first shipping on the go now. hopefully this is the end game for all my cheap usb c tester😁 Have a great day TYSM
Hi, you know how i can test accurate battery capacity?(battery CAP Calculation) if i test with default settings battery voltage: 3.7v and conv. eff: 90% i have more mah than real, tested against klein tools battery tester. i need move these battery settings?
Well, technically, to get the most accurate capacity measurements, you need to charge the battery outside of the device using a charger that can calculate the amount of mAh it pushes into the battery. Otherwise, the USB tester also adds to that capacity the amount of power the device itself draws from the circuit. Another problem is that we all know a lithium battery is considered fully charged when it reaches 4.2 volts and the nominal voltage for the battery is 3.7 volts. However, what is considered a fully discharged battery varies between devices, and there is no standard value. Typically, the safest low point is 2.7 volts, but usually, only power tools are allowed to drain the battery that low. Consumer electronics usually show 0% battery when they reach somewhere in the range of 3.2-3.6 volts. So, unless we have the datasheet for a specific battery, including details on what voltage is considered fully discharged, only then we can calculate its true capacity using an external charger.
@@ElectronicsComputers ok thank you!
Обновить его стоит. Детекшн уже версии 1.3, первой версии вешался часто. Глючно на китайских хай ватт зарядках реалми, оппо и т.п. работает. ТоварищЪ, у вас спешиал проносиэйшн, чую я. Успехов вам и каналу! ЗЫ: смена языка даёт приход от ютуба лучше?
Thank you for the comment! I'll check for updates. English is the language that most people on the planet understand.
@@ElectronicsComputers это не точно ;]
Индусы и китайцы так не считают.
They should upgrade the micro USB port to a USB c port for firmware updates, micro USB ports and similar, are extremely annoying.
You don't need to use the micro port. Just hold the button/wheel before plugging in a type C cable, and it works the same way. That's how I upgraded mine.
It's a joke that they have micro USB port for the updates this days.
0:27 A *bit* dishonest to not mention the fact that they DO offer a fully encased version for only $10 more right from Amazon...
That model wasn't available on Amazon or Aliexpress when I made that video.
@ElectronicsComputers I stand corrected. I am curious though - now that it DOES exist, would you choose the AVHzY again now, or stay with the FNIRSI?
Maaf Bertanya, Apa fungsi trigger, apakah aman untuk charge handphone? Adakah aturan tertentu?
NEVER change voltage with the connected device to the USB tester. It may be fatal to that phone. All devices that support higher voltage during charging will switch on its own when the charge controller send the appropriate request to the charger. If you force it you will burn the charge controller.
Terimakasih jawabannya, Lalu apa fungsi trigger ini ? Apakah ada perangkat selain handphone yg menggunakan fungsi trigger ini ?
@@zdnqds9546 That feature in the USB tester only for testing the power supplies and chargers. The devices like laptops, tablets, phones and some battery chargers can trigger different voltages depending on what they need. For example if you know that your phone supports fast charging and you bought some no-name charger, then using this USB tester you can check if that charger supports quick charge. Or maybe your laptop is not charging, then with this USB tester you can run a test to figure out where the problem lies in your laptop or charger.
@@ElectronicsComputersJawaban yang sangat memuaskan, saya sekarang mengerti, Terima kasih dan sukses untuk anda.
@@zdnqds9546 Saya senang bisa membantu!
The tester has a male usb-a plug. I plugged it into my dell inspiron 3668 which has 2 usb 3.0 ports on front panel. device says they're 2.0. can anyone try this?
As far as I know these testers can't detect USB speed or type. At what menu option did you find that feature?
how do i get it incase i want to buy it?
Am Brian Uganda
You can order on Aliexpress the link in the description.
Great video.
How to check if a charger support Xiaomi's 120W hypercharge from this.
It’s simply impossible to test Xiaomi's HyperCharge with this USB tester, and I’ve never seen a USB tester capable of doing so. The only option is to connect the charger through this tester to a Xiaomi phone that supports HyperCharge and observe the power ratings you receive. This way, you can determine whether it supports the HyperCharge protocol or not.
i dont think the cable spec check is useful. its surely not testing it in real time, its just reading whats in the EPROM probably, which could just be manipulated.
so you will know at least your cable went thru extra step, whether it is indeed that spec, without a real load and real testing, it is just as useless i think.
Unfortunately, there's no tester that can determine the real specs of cables. Yes, the device can measure the resistance of the cable, but without knowing the cable length or wire diameter, you can't calculate the power it can hold. So you have to either enter those specs manually, or it will be just an estimated value based on cable resistance and the average wire gauge.
Thks but I thinks I'll wait until it does PD3.1
PS: Hmmmmmmmmmmmmmm FNIRSI FNB58 USB Tester ⭐ How to Firmware Update & Add PD 3.1 Support th-cam.com/video/k5vDx_qWqO8/w-d-xo.html
The .pdf manual is essentially useless. The website is likewise pathetic. How do you upgrade firmware from linux? Even if I used Windows, no way would I install software from some unknown CCP company. A tutorial that walks us through using it for usb port capabilities detection, then to other features would be useful.
There's nothing in Apple's app store for fnb58.
For some shady software I always use a virtual machine.