Which is the best Usb Voltage Detector Tester ?

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Manx
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Which is the best Usb Voltage Detector Tester ?

Hi all, just want to buy one of this “USB Power Charger Current Voltage Detector Tester” and don’t know wich one is the best.
Can you help me choosing one?

7,77$ from BG (for this one I’ve read a good opinion by an italian guy that used to work with a portable solar panel. From specs: Two output ports.output one(data transmission and charging).output two(only charge your mobile)) It seems very good.

4,99 from BG
A lot of guys here have this. What do you think about?

6,16$ from BG Just fashon?

9,39$ from BG this is the expansive one…why??

I would prefer the more complete and all around.

Thank you very much for your suggestions Smile

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TheBo
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I have the third… I m pretty satisfied with it.
HKJ has review it… Also with many other models… Maybe you’ll find most of your answers
Check his site

Rufusbduck wrote:
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keengeorge
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Good Day Manx, Smile

 

You should also consider:

XTAR VI01 USB Current/Voltage Detector For Battery Power Bank U$5.49 | Banggood

http://www.banggood.com/XTAR-VI01-USB-CurrentVoltage-Detector-For-Batter...

 

Best Regards,

George

StorminMatt
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keengeorge wrote:
You should also consider:

XTAR VI01 USB Current/Voltage Detector For Battery Power Bank U$5.49 | Banggood

http://www.banggood.com/XTAR-VI01-USB-CurrentVoltage-Detector-For-Battery-Power-Bank-p-969089.html

 

Best Regards,

George

Or, if you live in the US, get it for $4.95 from Xtar Direct without the long wait of ordering from overseas.

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hank
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XTAR, reviewed by HKJ

http://budgetlightforum.com/node/29732

I got this one and like it fine.

Antenne
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I would also say: read HKJ’s tests, there are some. But from my own experience I like those most with separate displays for Voltage and Current (some have Power and Capacity too!). So I prefer #3 and #4 (the OLED type) because I find it very annoying if the display shows voltage and current alternately. (E.g. when I use it to find the best spot for my smartphone on the QI panels for charging.) It very much depends on the intended use if you need e.g. capacity monitoring or not.

flydiver
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I found the blue [Charge Doctor] to be unreliable, might have just been my unit.
The Xtar is essentially similar but is a much better unit.
My favorite because it does capacity is the 3rd link (white one). It’s a bit fussy to get from one screen to the next but otherwise fine.
I don’t find the more basic units that flip between screens to be all that annoy because they don’t show much anyway. Smile They are much better than nothing.

One thing I’ve noticed using these is…… JUST ABOUT ALL POWERBANKS COME WITH CRAPPY CABLES. With most of them I cannot exceed 0.22A no matter what it’s plugged in to, including 2A capable plug-in USB power sources. One cable will do 0.44A, and my best one will do 0.84A. All tests using a decent Power source and feeding the same tablet. The only variable was the cable.

If your USB or your powerbanks seems to take a long time to charge or be charged it could well be the cable.
I think I’ll start a separate thread on this. :bigsmile:

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CRX
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This is a good compact detector. Tells you current, voltage, power and mAh used. Seems fairly accurate.
The ones with the red boards seem to be inaccurate with the mAh reading.
I put some clear 18650 heatshrink on mine. Much better than the blue charger doctor type.

Werner
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I have a lot of them there is even a big thread about it here with all the voltage doctors…(search forum for doctor)

I like this most:
http://www.banggood.com/Kcx-017-LCD-USB-Voltage-Current-Detector-Mobile-Power-Charger-Tester-p-950855.html
It has a nice old display and can count and store(After power loss) the mAh, it also has a Micro USA in so you Fan Test phonecables.

The normal ödes which just Show voltage and current aren’t useful for capacity measurements, especially when testing power banks and older cellphone batteries.

GregY
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hank wrote:
XTAR, reviewed by HKJ

http://budgetlightforum.com/node/29732

I got this one and like it fine.

Another vote for this one. I have it and like it quite a bit.

Ormbett
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Werner wrote:
I like this most: http://www.banggood.com/Kcx-017-LCD-USB-Voltage-Current-Detector-Mobile-Power-Charger-Tester-p-950855.html

Ordered, thanks for recommendation! Smile

TheBo
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Ormbett wrote:
Werner wrote:
I like this most: http://www.banggood.com/Kcx-017-LCD-USB-Voltage-Current-Detector-Mobile-Power-Charger-Tester-p-950855.html

Ordered, thanks for recommendation! Smile

There’s also a resistor load which you can buy, which allows you to test current outputs of let’s say usb charger… You can switch from 1A to 2A

I find my self pretty happy with the meter you have chosen… I’ve bought it before HKJ tested it

Keep in mind… If you keep the button pressed for a while you go into the next memory and erase it.

Rufusbduck wrote:
Getting discouraged is normal but doesn't finish the job.
Antenne
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Here is the manual for the KCX-017 I’ve copied from the web:

Kcx-017 LCD USB Voltage Current Detector Mobile Power USB Charger Tester Meter

Specifications: 1. Input Voltage: 3V – 7V

2.Input current: <3.4A 3. Parameters that you can test: Voltage of battery. Current of battery, value of discharging capacitor.(Total ten parameters) 4. Communication function: Yes 5. Parameters adjusting function:Yes. Equipment for parameters adjustment: One electronic load, one constant current source. Voltage of constant current source should be set to 8.5V There are 3A, 2A, 1A and 0.3A models for current adjusting. Here is a example for 3A: When you set electronic load at 3A model, the current will be adjusted step by step. It will cost you about 10 seconds and you can see the result changing procedure in the LCD screen. When you see the 3A result shown in LCD screen, the adjustment process is finished. You can shut off the electronic load and the parameters will be saved automatically. 6.Clean the data: Push the button until the parameters changed to next sets of parameters. Then release the button. Then the next sets of parameters will be started and they will start from zero. 7. Check the parameters: Quick beat the button double times(within 0.5s), then it is checking model. The LED background will be flash.Then you can see the next set of parameters in LCD screen. Quick beat the button double times again, you release the parameters checking model. LED background be be light with flash. 8. Over voltage or under voltage: An arrowhead will be shown in LCD screen and LED background will flash. Push the button and LED will be light without flash. It will last 30s. 9. Turn on model. The LCD screen will show all parameters within 1s when you connect power supply by Micro USB or male plug of USB with wire.(It is to check whether the LCD screen is good or not). Then you can see the parameters used last time(capacitor and which set of parameters). You also can see the current voltage, current and over voltage or under voltage. Please see following illustration. USB output port can be connected to a data line, a discharge resistor or the like cable device comprising a data communication function, the data does not affect the data transmission line.
flydiver
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Typical…..great reading. Silly
Better than nothing, thanks.

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Antenne
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I’ve tried to restrore the carriage returns but with no luck. In the editor it looks normal, if I upload it again it’s all one block w/o paragraphs. The content is a bit “chinese” but understandable.

Manx
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Wow! That’s a lot of precious infos! Thank you very much, guys Party

Quote:
…JUST ABOUT ALL POWERBANKS COME WITH CRAPPY CABLES. If your USB or your powerbanks seems to take a long time to charge or be charged it could well be the cable. I think I’ll start a separate thread on this.

I’ve read the same somewhere…Thumb up for another thread for a quality usb cables!! Big Smile

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flydiver
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I did order some MUCH better cables (Aukey)-thicker, better ends, plug in nicer. Plugged into a decent USB power source and to a device that can use it they charge at a higher rate.

But I have found a peculiar problem. I inherited a Samsung Galaxy S3 phone. The charging port is a bit flaky and the battery was suspect, so I was trying to do a capacity charge test using Kcx-017 LCD USB Voltage Current Detector Power Tester
The charge would start, then kick out. I’d wiggle the cable again > start > repeat until I got frustrated.
Got the better cables > same problem with the phone but not other devices.
Remove the Power Tester > no problem. Tried other testers > every one of them caused the problem on the Samsung phone.
No problem with a Windows phone I have.

Anyone have any idea what the glitch might be?

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TheBo
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So, no matter which cable/tester combination you got this results?

Charghing with ANY tester=> broken
Chargin with ANY CABLE without tester => Good

Is it correct?

I have the same tester and i bought a set of 3 AUKEY 120 cm micro usb cable, they are good but current sags much faster than with an original 13 cm Xiaomi Cable with my note2, no matter which ROM/Kernel I use and I set.
With the xiaomi cable i got like 1.65A for the 80% of the chargin process.
With AUKEY i have 1.55A at best , and for like 10% of the chargin process, no more, then current sags quickly towards 1A.

Rufusbduck wrote:
Getting discouraged is normal but doesn't finish the job.
hank
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Kcx-017 LCD USB Voltage Current Detector Mobile Power USB Charger Tester Meter
Specifications:

1. Input Voltage: 3V – 7V

2.Input current: <3.4A

3. Parameters that you can test: Voltage of battery. Current of battery, value of discharging capacitor.(Total ten parameters)

4. Communication function: Yes

5. Parameters adjusting function:Yes. Equipment for parameters adjustment: One electronic load, one constant current source. Voltage of constant current source should be set to 8.5V There are 3A, 2A, 1A and 0.3A models for current adjusting.

Here is a example for 3A: When you set electronic load at 3A model, the current will be adjusted step by step. It will cost you about 10 seconds and you can see the result changing procedure in the LCD screen.

When you see the 3A result shown in LCD screen, the adjustment process is finished. You can shut off the electronic load and the parameters will be saved automatically.

6. Clean the data: Push the button until the parameters changed to next sets of parameters. Then release the button. Then the next sets of parameters will be started and they will start from zero.

7. Check the parameters: Quick beat the button double times(within 0.5s), then it is checking model. The LED background will be flash.Then you can see the next set of parameters in LCD screen. Quick beat the button double times again, you release the parameters checking model. LED background be be light with flash.

8. Over voltage or under voltage: An arrowhead will be shown in LCD screen and LED background will flash. Push the button and LED will be light without flash. It will last 30s.

9. Turn on model. The LCD screen will show all parameters within 1s when you connect power supply by Micro USB or male plug of USB with wire.(It is to check whether the LCD screen is good or not). Then you can see the parameters used last time(capacitor and which set of parameters). You also can see the current voltage, current and over voltage or under voltage.

Please see following illustration. USB output port can be connected to a data line, a discharge resistor or the like cable device comprising a data communication function, the data does not affect the data transmission line.

flydiver
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TheBo wrote:
So, no matter which cable/tester combination you got this results?

Charging with ANY tester=> broken
Charging with ANY CABLE without tester => Good

Is it correct?

Correct. On the phone, and the phone only, the charge will start but stops after a bit. It’s erratic. I’ve even got it to complete but that was after a bunch of messing around so I don’t know what the ‘magic’ was. Probably just luck.

Since I can’t keep the testers in line I don’t know HOW WELL (fast) it’s charging but the ‘better’ cables plug in more securely and charge more reliably.

Interesting issue with the Xiaomi cable vs. AUKEY. Is the Xiaomi a pure (only) charge cable? Cables that also have data capability like the Aukey will signal that to ‘smart’ devices like a cellphone and throttle back the charge. That’s a fairly normal function. There are internet threads on ways to screw with the USB to bypass this.
On my phone a ‘charge only’ cable is signaled with an [AC] designation during charging. A ‘data capable’ cable shows up as [USB] while charging. The AUKEY are ‘data capable’. I did not think to look at that when I got them.

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Werner
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Flydiver when it starts charging with the tester how much current flows?
Samsung chargers often have a higher voltage(5.3V or so), I guess the devices won’t charge very good if they don’t get what they need.

flydiver
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Didn’t think of the possibility of Samsung having higher voltage. I don’t have the original charger as it’s a hand-me-down phone. I’m using an Aukey 2.4A capable charger.
This starts out at 5.14v @ 0.5A on the phone (right now), but that’s on an almost completely charged battery (90%) so it’s probably throttled down. I’ve seen it near 1.0A before (briefly, before it kicks out).

Having said that, the finishing charge is 4.3-4.35v. 5.0v input should be plenty of differential to do that I would think, and it does charge completely using the same charging system. Batteries come out a bit over 4.3v checked with DVM.

But that doesn’t explain why the charging kicks out when using the Power Tester….does it?

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TheBo
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The xiaomi cable was bundled with 10400mAh powerbank… It’s also data-transfer capable.
To make a cable a charge only cable… You have to short the data pins… There are also adapters that can do that without compromising the cable itself.. But again it is also limited and depends on the section of the wires… Since as the total impedance which is also affected by the wire ipedances rises… The current decreases for the ohm’s law…
I’ve seen the max current flow throw that wire, While charging With the power bank, going over 2A measured with the tester… Flat out… Never seen that on a charger(Sammy note2,sammy tablet 10.1 or Griffin powerbrick 2.4A). Every charger I tested had a max V of 5.13-5.17V.
At 90% if you had 0.5A…you had a pretty good value.

You could also check (roughly) the flowing current using an app called Galaxy Charging current.
deltaAmp are usually within 20%… Meaning the app is overestimating.
The note2 and I’m pretty sure the i9100 s3 batt are 4.35V batteries so you are right about measurement.

Have you tried charging with a spare battery.? .. Just to know

Rufusbduck wrote:
Getting discouraged is normal but doesn't finish the job.
Ormbett
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TheBo wrote:

There’s also a resistor load which you can buy, which allows you to test current outputs of let’s say usb charger… You can switch from 1A to 2A

I find my self pretty happy with the meter you have chosen… I’ve bought it before HKJ tested it

Yep, I ended up buying the resistor load too Smile

TheBo
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Yeah. I did it too… But it ended I never used it in reality Silly

Rufusbduck wrote:
Getting discouraged is normal but doesn't finish the job.
Noki
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Thanks for the Kcx-017 manual Antenne and hank.

bkling
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you probably can get the best USB doctor at www.taobao.com (China ebay):- High accuracy with low impedance, most of them can be flashed when there is new firmware. I own 4-5 of them. Personally I feel they are extremely good, high accuracy (compared with fluke meter) and high quality. For your reference if you can read chinese:-

http://item.taobao.com/item.htm?spm=a1z10.1-c.w4024-5909411634.2.5a53ti&...

http://item.taobao.com/item.htm?id=43646026777&ali_refid=a3_420986_1007:...

http://item.taobao.com/item.htm?spm=a1z10.1-c.w4004-7257832633.17.LojbdL... same as 3rd one but the latest version with 2 USB.

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Werner
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What do you mean with Flashing new firmwares? Do you have more Info on this?
The First one is new to me…so I need it.
Anyone found an eBay source?

TheBo
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I think you can find it on ebay just look at “YZXstudio”

http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.H0.X...

the firmware it’s upgradable, but i think you need to mod it with an interface and than use the proper configure PC settings

Rufusbduck wrote:
Getting discouraged is normal but doesn't finish the job.
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Hello !

I’d like to buy USB Tester – I see, that some of You recommend Xtar VI01 , but it seems to have quite high resistance that significantly reduces voltage (i.e. by 0,39V at 2A). It worries me a bit, but I can see, that even professional USB tester, like PortaPow Premium reduces voltage (by 0,33V at 2A).

After reading every USB tester review here I think, that this ebay USB meter will be best choice – it seems to be accurate enough and it has lowest resistance, at 2A it reduces Voltage by only 0,26V. As there are more accurate testers, but with higher resistance, here is important question for me – how does the reduced voltage affect charging – can it cause damage to the battery or so? Will ebay USB meter be a good choice, or should I buy more accurate tester but with higher resistance?

Regards
Michal

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HKJ has just posted a test on another meter here. 

http://budgetlightforum.com/node/35777

 

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