USB Safety Tester - Best Charger Doctor Ever!
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- Опубликовано: 11 сен 2024
- I've done a lot of reviews recently that work with USB power, and people have been commenting on this little unit. What is it and where to get it? Well this is the best charger doctor ever made in my opinion. It uses a OLED screen, works from 3-30vdc, up to 5.1A, shows the voltages on the data lines, and has a memory function that will retain readings after losing power.
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I bought this because you said you liked it. I see why. This is a great little tool. I discovered some of my cables allow only a small charge current to flow while others allowed a large current. Thank you!
Very good point about the cords (cables/leads). Most of these never tell you how many Amps they can handle and I guess the real cheap cords could be a problem.
Great demo/revue. Bought one of these because it was recommended to buy with a solar panel charger I bought. But the little device came with no instructions. After watching this demo/review I'm really glad I bought it.
Your video intro and subsequent delivery is a refreshing contrast from so many others who are club you over the head to like and subscribe right from the get go. Kudos to you for taking the high road.
Thank you very much for this indeed very helpful review
Just ordered one and subscribed :-)
I look forward to more videos.Keep it up!
Looks like a handy little gadget.
Try Holding the button in and plugging in large display should now be activated.
With three testers, it would be nice to see them in series to learn how different the readings are.
i just needed one and because of your review i had to buy one from amazon.. thanks and stay awesome ^^^^
Drawback I'm having is that the OLED driver circuit makes a very audible whining sound. Apart from that, thanks to Stephen Turner's brief instructions below, I can change the language now.
Funky the way the input plug works - I guess that's so that what ever way the port is oriented you can plug it in and always see the screen. Having the memory is useful to be able to drain a battery then check how much power it had.
When your video is at 4:55 the Capacity is 0mAh (1.00). What does the 1.00 in the brackets mean? Thanks for the video.
Good item thanks for the info! What is the best load tester for testing batteries, especially USB battery banks? Thanks!
Mine came with a card with quick start instructions:
Muker USB Tester - J7
Quick Start
1x short press - Change Display
2x short press - Reset the capacity meter (mAh)
3x short press - Reset the energy meter (Wh)
4x short press - Reset Time (00:00:00)
5x short press - Set timer
6x short press - Change language (English/Chinese)
1x long press - Reset all meters.
Also, I've found that if you hold down the Key while plugging it in you get a setup menu but with only one key it is hard to guess how to set it up. It's a combination of short presses, long presses 2x short presses and waiting as far as I can tell.
Does anyone have fuller instructions?
wow thank you, now I can see in english languaje.
Basically, that's the standard display and the way to reset the tester to default if you change any of the over/under voltage settings.
(Late reply but owell)
Thanks. I've been playing with setting the timer (5 quick button presses) and noticed that a quick double press on the button when the time flashes increases the timer and one quick press decreases the time for the timer.
2:20 Green one? Brain fart or colorblind?
I have a question: Do you know if using these meters messes up any iSmart communication between an iOS device and an iSmart power brick ?
Is it auto-negotiating power on the data pins? Or just passing +d -d voltage info along to you from whatever charger you are using?
+GeorgeGraves I believe it just passes through, negotiation is still handled between charger and device.
Thanks!
Is there a way to connect that tester directly to the mobile ? Because the figures showing especially Charging Current in Ampere (?) might not be the real CC entering the mobile because of the ~1m cable as in my case was not a good one for some reason. Is there a way to 1. connect the tester directly to the charging port of the mobile ? or 2. move the tester as close as possible to charging port? That would filter out the cable as a factor in any case. . .
Thanks, I ordered one to try.
Just received mine your review helpful trying to figure it out but looks ok
Very useful . Thank you
Goob job! :) Keep it up!
Not sure if you guys cares but if you are bored like me during the covid times you can stream all the latest movies on InstaFlixxer. Been watching with my gf during the lockdown :)
@Bryce Skyler definitely, been using InstaFlixxer for since december myself :)
Great review! Thanks!
Are there any testers that allow us to test cables? I bought some 'speed' cables and they turn out slower than iphone originals. Thanks!
Hey, I recently purchased a keweisi model:KWS-MX18 my question is on the calibration setting and I was hoping you could help. I’m confused in the settings...once I’m in calibration mode I’m able to increase or decrease the voltage ex. 5.5 - 11 v and I’m not sure why I need to do that.
Great videos! Keep it up!
Hi gdnight my name is ricardo is it possible if u could advise me on which one of d USB testers should i buy (USB safety tester J7-T or USB meter tester AT34) thank u stay safe be safe out there from d covid-19 pandemic 🙏🏼
Hi. I just bought mine and it keeps shutting off. Do you think I have have a bad one? Thanks
So what is this suppose to do? Just let you know if it is over charging your device?
What if you only have type-c port on the adapter? Does it comes with type-c connectors
Good video
2 minutes ago just ordered one
Before I order this... do you have any updated ones you like better.... btw the ebay link no longer works.
I get a Tips! error.... I don't know what it is... Tired of needing to start it again.
those are great!! i have 2 of them
There is a bad clone available out there. The internal alarm on the clone is set for 20V. If you re-set it for the 30V the sales listing says it is capable of, then feed it 29V, the unit internally shorts. The real ones run $6+. The clones I've seen down to $4.xx USD. It might be great for under 20V use I don't know. I didn't get to use the clone for long.
my device did not work at all ruclips.net/video/H1yWf7_ZhKA/видео.html price $4.83
This device can tell if my smartphone battery good or not???
Hey,
The first charger seems to be the standard one with output of 5V ~ 2A
But still the tester was reading more than 5V.
How could it exceed its output limit?
It is within the USB specification. A normal charger may output between 4.5 and 5.25 V (devices must be able to tolerate these voltages)
I have Keweisi, it is also not bad....
Ebay link down ... can you please shown me a liable link for one with OLED? Only find others with LCD and with another names like "USB Security Tester"
New link has been put in the description.
3:18 🤣🤣🤣🤣🤣🤣
I bought the DROK USB Multimeter...
Ay, I got one of those
I guess you don’t know there is much more “professional “ tester exist like the UM24, UM25, UM34....etc.
These are not effective for the voltage coming from a portable solar panel. Trust me, I tried yesterday multiple times. However, it works great from a wallplug or your computer.
will it cut off the power charging automatically when our phone fully charged (with the mode AO)?
Doesn't seem to, but the instructions suck so eh..
No. Remember that it is a tester, not a controller. Power and data are simply passed straight through and are monitored.
Hardly the "best ever" - not when it was released, not when this video was made, and DEFINITELY not in 2021
this one is not good, 2-3 years ago, we design a USB protector meterm, it sell not good, I guess this protector meter is not popular
i want to used this for a usb 40w solar panel.
lol, turns out this is the one I just got.
wouldn't say its the best though, but it does the job
Oh, and its LCD not OLED.
If you see white characters on screen, it's OLED.
@@Seawolf9314 Eh, whichever.. I upgraded to the Eversame USB C Power Meter Tester, with a color screen. I do like that you can put the other 1 in any direction though, cant do that with the new 1 I got.
05:35 9V for USB charging? Very high by USB standard.
USB QC devices now can be charged with 5, 9 or 12 volts depending on how the device controls the QC power supply device.
très bonne vidéo mais moi je suis complètement perdu pour savoir comment testé une batterie externe, un câble usb ou un chargeur... :-( le chargeur si on le teste on ne sait que son voltage mais le câble ? pour la batterie externe, c'est pareil, je voudrais savoir si son câble est toujours ok et si sa capacité est réellement ce qu'elle affiche...
1:37 not really good. I have a defect one.
Do you have German links? :C I can't find it anywhere...
Oh, I guess I got it now! Is it this? www.ebay.de/itm/232351625050
yes that is the same unit.
Tt
Great review, thanks!
Great review, thank you.