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DROK USB Tester, USB-A 2.0 Digital Multimeter Dual USB Output Ports PD QC 3.0 Color LED Display, 7 Modes Capacity Voltage Current Power Voltmeter Ammeter for Laptop Power Bank Solar Panel
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | DROK |
Power Source | Battery Powered |
Style | Voltage Tester |
Color | Black |
Item Weight | 0.01 Ounces |
About this item
- 【7 Modes Display Monitor】 DROK USB Tester is equipped with digital color LED display screen, which can be switched between 7 display modes. This multimeter can be used to measure voltage, current, power, capacity. Through the 7 modes, you can clearly see the voltage, current, capacity and power during charging. Only 1 button to switch the display mode, simple and handy.
- 【Dual USB Output】 This item is equipped with USB-A input and dual USB 2.0 output. The output ports support PD QC 3.0 fast charge protocol. This meter can auto identify the fast charge protocol, which can charge your device among 3.6V to 12V 3A. Output Ⅰ can be used for device charging and data transfer, and output Ⅱ can only be used for charging.
- 【Multifunction】 DROK USB detector can be used for capacity checking, capacity clear, over voltage, under voltage, over current and short circuit alarm, which is easy to test the power, quality and know the health condition of your device chargers or USB cables.
- 【Easy to Use】 The multimeter only has 1 button. Once you plug in the meter, you can test the parameter you want. The button can switch 7 modes display——VA(Voltage & Current), C(Capacity), P(Power), VA+C, VA+P, C+P, VA+C+P.
- 【Application】 DROK USB Meter can be used for the devices between 3.2-30V and 0-5A. You can use this for 5V 9V 12V 24V 30V solar panel, power bank, battery charger, USB able.
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Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 3.5 x 3.1 x 1.2 inches; 0.01 ounces
- Item model number : 300043
- Date First Available : March 19, 2014
- Manufacturer : DROK
- ASIN : B00J3JSEG6
- Best Sellers Rank: #26,406 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
- #57 in Multi Testers
- Customer Reviews:
Product Description
Is your mobile device not charging properly, and you suspect the new charger that you bought recently? Do you want to check if your solar charger is giving proper current for your mobile device? Specification Input voltage : 3.20 - 15.0V Resolution: 0.01V [10V]; 0.1V [=10V] Measuring current: 0.00 -3.00A [10A Max, but cannot work in 10A for long time] Resolution: 0.01A Capacitance measurement: 0-99999 mA/H Capacitance accumulation: YES Power testing: 0.00-9.99-99.9W Over-voltage alarm: When voltage /=5.6V, voltage digital point will flash quickly Lacking-voltage alarm Over-current alarm : When current /=3A, current digital point will flash quickly Short-circuit alarm: current digital point will flash quickly Dual USB Output OUTPUT I [Dual Function - Device Charging and Data Transfer] The charging current, in this case, is determined by compatibility. You can view the voltage and current values at the same time. OUTPUT II [Device Charging Only] The Built-in intelligent charging control IC matches the most appropriate and safest current for your devices automatically. It is used mainly for Non-original Chargers, but it is suitable for Original Chargers as well. This universal usb gadget is suitable for most of the mobile phones, mobile power, tablet PCs and other USB devices, like BC1.2, YT/D1591-2009 and non-BC1.2. Get yours today by clicking “Add to Cart” above
From the brand
Enjoy Life, Enjoy DIY.
DROK
- An expert in this field for over 10 years.
- A seller who cares you a lot.
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How did we get our start?
DROK has been an expert in this field since 2010. Originally, two of our engineers would like to make our own products and sell to everyone. With love and enthusiasm, DROK was established.
Why do we love what we do?
We cares you a lot. We believe that a good product can bring happiness to our customer. Your satisfaction is our strength.
How do we do, if there's some issue with product?
We care you a lot. Each product you purchase from DROK can share one-year long period service. You can get a brand new replacement if there's any quality issue with your items.
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From the manufacturer
USB Load Tester | USB Load Tester with Display | USB Buck Boost Voltage Converter | USB Voltage Regulator | |
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Add to Cart
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Customer Reviews |
4.6 out of 5 stars
196
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4.3 out of 5 stars
14
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4.3 out of 5 stars
302
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4.3 out of 5 stars
50
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Input Voltage | DC 4-25.0V | DC 4.0-25.0V | DC 3.5-15V | DC 3.5-15V |
Operating Current | 0.25-4.00A | 0.03-5.00A | ||
Max Discharging Power | 25W | 35W | ||
Output Voltage | - | - | DC 0.6-30V | DC 0.6-30V |
Display | LED | LCD | LCD | LCD |
What's in the box
Product guides and documents
Videos
Videos for this product
3:07
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Quick Look: DROK USB-A Tester with Dual USB-A Output Ports
AppMyHome
Videos for this product
0:44
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DROK Digital Multimeter for Fast Charging
DROK
Looking for specific info?
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the electric circuit testing device for its entertainment value. They say it's a fun little device to have in your tool box. They also appreciate the bright and readable LED display, which is easy to see in various lighting conditions. Customers like that the device is compact and easy to carry. They like that it works well for its intended purpose and is very useful to troubleshoot USB power banks. Customers are happy with readability, accuracy, and voltage display. However, some customers have different opinions on charging.
AI-generated from the text of customer reviews
Customers are satisfied with the quality of the electric circuit testing device. They mention that it works well for its intended purpose, and is extremely useful. Some say that it's a handy tool that works great for monitoring iPhone charger operation. Overall, most are happy with their purchase and recommend it to others.
"...With few exceptions, excellent build quality (doesn’t “feel cheap”).ABOUT YHE COMPANY AND THEIR PRODUCT-..." Read more
"...LED display (Red for Voltage, Blue for Current) on the DROK unit is beautiful and very easy to read...." Read more
"For seeing what current draw small devices have, this works fine -- and will come in handy for that and the other functions it provides...." Read more
"This is a very handy tool that I purchased to use in measuring the current and voltage of USB circuits and to evaluate whether or not the capability..." Read more
Customers find the electric circuit testing device easy to use and understand. They appreciate the instruction sheet and screen. They also mention that the pigtail connectors make it easy to plug into weird areas and that the numbers are big and easy to read.
"...The instructions coming with this product are excellent (see below for more on that in general)...." Read more
"...of display and therefore greater functionality, plus it is supplied with instructions and comes packaged in a nice tin...." Read more
"This device was very easy to use and settled a long running mystery of slow phone charging through our vehicle's built in USB charging port...." Read more
"...The pigtail connectors make it very easy to plug into weird areas (like inside the center console of my car)...." Read more
Customers are satisfied with the accuracy of the electric circuit testing device. They mention that it gives more accurate current readings, has more consistent readings and that the readings seem reasonable. Some say that the amperage reading seems to work well enough. Overall, most are happy with the product's accuracy and functionality.
"...It gives more accurate current reading- It introduces less resistive drop..." Read more
"...USB charging/discharge voltage, current; it will display alternately capacitance and power; or it only display power or only display capacitance..." Read more
"...This one has way more consistent readings and it kind of matches my earlier observations about the performance of my different chargers and cables...." Read more
"...The current and voltages measured by this thing are very accurate, easily within 1% of what I get ona DVM...." Read more
Customers find the display of the electric circuit testing device bright and readable. They say the LED display is much easier to read than the LCD panel and is visible in various lighting conditions. The print is large and bright, making the readout easy to read. Customers also say the display is clear and plenty bright enough indoors.
"...Its LED display is much easier to read than the LCD panel- It gives more accurate current reading-..." Read more
"...Besides, the brightness is more than adequate and the numbers are big enough...." Read more
"...The display is simple, but very easy to read...." Read more
"...a DVM. The display is bright and easy to understand...." Read more
Customers like the size of the electric circuit testing device. They mention that it's compact, has a large and readable display, and is portable. The measurements are all perfect, and it reads proper measurements. The numbers are large and easy to read, and the display is accurate from initial measurements.
"...Features:1.This USB monitor is tiny in size and light in weight; it can display USB charging/discharge voltage, current; it will display..." Read more
"...Besides, the brightness is more than adequate and the numbers are big enough...." Read more
"...PROS• Display is very easy to read indoors.• Unit size makes it very portable.•..." Read more
"...Speaking of which, the plug, wire and device are about 8 inches, so it's compact so it should fit in your bag of computer stuff...." Read more
Customers like the voltage display of the electric circuit testing device. They say it displays reasonable values for voltage and current. Some say the LED display is much easier to read. That said, some say the basic display of volts and MA is simple. Overall, most are satisfied with the functionality and performance of the product.
"...It can display both Voltage and Current at the same time- Its LED display is much easier to read than the LCD panel-..." Read more
"...USB monitor is tiny in size and light in weight; it can display USB charging/discharge voltage, current; it will display alternately capacitance and..." Read more
"...All of these meters are perfectly fine for straightforward voltage and current measurements and for someone who is familiar with the use of such..." Read more
"...This little unit is perfect for checking both the amps and volts simultaneously delivered to two devices (plug in one device (port 1) and record the..." Read more
Customers find the electric circuit testing device to be fun, satisfying, and enlightening. They say it's a fun little device to have in their tool box, especially if they're a geek. Customers also say it gives them piece of mind and is perfect for those moments when they are not sure if the device is not charging.
"...This tester is not for everyone but it gives me piece of mind." Read more
"...Very enlightening! Have learned that the power storage claims of all battery pack mfrs are total BS...." Read more
"Works precisely as advertised. Appears as shown. Large clear numbers mean you can read it without glasses...." Read more
"...your USB devices are consuming this is a good value and is just fun to tinker with. Would buy again/recommend." Read more
Customers are mixed about the charging of the electric circuit testing device. Some mention that it has two USB output jacks so it can be used to test multiple devices at the same time, and one USB port will also transmit data. However, others say that the charging power rating does not seem appropriate, and the battery is not fully charged.
"...2. It allows two USB devices to be plugged in at the same time, so it doubles as a port-extender...." Read more
"...or it only display power or only display capacitance 2.USB multimeter allows you to easily and conveniently measure output current of USB mobile..." Read more
"...Note: Does not power up with the new Pixel 3A USB-C charger -- but does with my other generic USB-C chargers...." Read more
"...For that purpose, it is all fine and may help you diagnose some charging problems as well. Feels like accurate but I can not say it for sure...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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With few exceptions, excellent build quality (doesn’t “feel cheap”).
ABOUT YHE COMPANY AND THEIR PRODUCT-
Their devices frequently have many features, maybe beyond what you needed included but that’s just it; A great Value!
AND, if you’re a casual DIYer you could read up on the stuff you didn’t need it to do and Learn something. I’m well-trained and paid for what I do. Yet every job/client I do typically has an added bonus of some pearls of wisdom for me, or others the next time. Knowledge is Power...Pun intended ;)
When I’m looking for a meter or other similar device, I ONLY shop the DROK products. The instructions coming with this product are excellent (see below for more on that in general).
THIS THING is great to see current flow, check your charge cables, it’s NOT a way to discharge a battery, and doesn’t really work effectively (for the lay-person) to see charging rates. It’s best for voltage, live load, draw.
Nite on cables-I have some ISB cables that are wired weird. They will lower but not transfer data. Some do the opposite. Some have product-specific circuits or chips. You might throw away a good cable. Use this to sort things out.
Now, let’s address some of the other reviews I’ve read-
A-Reviews should be about the product and not the shipping, Amazon itself, etc.
B-Every product ordered, from a 737 to a pencil can have a bad one off the assembly line. Don’t review-shame the seller until AFTER you attempt to rectify things with them.
C-Several people report that it’s inaccurate, or never reads any different values.
This is actually what it should do, in a way, depending on your intended use. Most modern devices (more and more every day) have “Smart” charging. They regulate the charging to preserve the lifetime of the battery itself. It doesn’t pull full power all the time. That smart charging also helps when you are using a spare battery bank on-the-go.
Do you have an iPhone? Check this: Settings>Battery>Battery Health and if “Optimized Battery Charging” is ON, that’s an example of Smart charging.
Point a webcam that records at this meter. Go to bed. In the morning watch the recording in FastFWD and you’ll likely see some changes to the readout values.
D-STOP taking away stars because the instructions are not written by a Harvard English Professor. Most products are made in Asia and the translation to American English is tough. We have words they don’t. Sometimes these read funny or totally crazy. “Insert the plug to flow watermelon to have extended happy value”. Seriously.
If you don’t have a clue how to use something and your expectation is to open the box, plug it in, and Voila! Instant answer or problem solved without any understanding of what you’re looking at, you’re over-reaching. Don’t expect a single small sheet of paper to give you an Electronics Theory PhD.
Do This- Read the entire listing product description. If THAT reads crazy, SO WILL the instructions. Move on to another seller.
ALSO, search YouTube before purchase for HOW to do your project. Many times, this explains what to do with your new gizmo even before it arrives. In a recent case for myself on a client’s project that just would NOT produce their expected results, I searched YouTube. Not only did I find a solution, I discovered a new product I didn’t know existed, and, just as I describe above, watching a guy install the device completely made up for the “stick-figure” instruction sheet. I was ready to go when I got to her house.
AND I came in well under-budget and looked like a genius. What I learned will repay me more than the pay on that 1 job.
I even bought a 2nd one of those devices for my own home.
1. It has a dual-display to show both voltage and current simultaneously. For the PortaPow meter, I need to toggle a mechanical switch to select either voltage or current to display.
2. It allows two USB devices to be plugged in at the same time, so it doubles as a port-extender. Note that the port on top can be used for both charging and USB communication, while the port below is for charging only.
[LED display]
The color LED display (Red for Voltage, Blue for Current) on the DROK unit is beautiful and very easy to read. In contrast, the LCD panel on PortaPow unit can be difficult to see under dim light. At first I was worried that the use of LED display will make it consume more power. But the actual standby current I measured is just around 10mA (the product description says '<20mA')
[Accuracy]
Both DROK and PortaPow units claim to have an accuracy of 1%. However, in my comparison against a DMM (digital multimeter), both units missed the goal. But at least the DROK unit is closer to target. For example:
- When I insert the DROK unit in series with my DMM, the DMM reported 1.35A while the DROK reported 1.37A (0.02A too high)
- When I insert the PortaPow unit in series with my DMM, the DMM reported 1.32A while the PortaPow reported 1.36A (0.04A too high)
The result above also indicates that the PortaPow unit introduced more series resistance, hence the output voltage drops lower, resulting in slightly lower charging current.
[Bottom Line]
I consider the DROK USB meter to be a better product than the PortaPow unit, because:
- It can display both Voltage and Current at the same time
- Its LED display is much easier to read than the LCD panel
- It gives more accurate current reading
- It introduces less resistive drop
The only negative I can say about this product: it comes with ZERO documentation. So you really have to read all the specs and operating instructions from the Amazon product page and user reviews.
Currently the DROK unit is available at lower price than the PortaPow unit, so there's no doubt which product I recommend.
[Update on Oct 18, 2014]
I need to point out one limitation of this device: its top port is limited to USB 2.0 speed. I just tested this with my SanDisk Ultra Fit USB 3.0 Flash Drive . This drive can deliver 145MB/s in Read speed when connected directly to an USB 3.0 port. When connected through the DROK monitor, however, its READ speed drops to just about 41MB/s.
Reviewed in the United States on September 13, 2014
1. It has a dual-display to show both voltage and current simultaneously. For the PortaPow meter, I need to toggle a mechanical switch to select either voltage or current to display.
2. It allows two USB devices to be plugged in at the same time, so it doubles as a port-extender. Note that the port on top can be used for both charging and USB communication, while the port below is for charging only.
[LED display]
The color LED display (Red for Voltage, Blue for Current) on the DROK unit is beautiful and very easy to read. In contrast, the LCD panel on PortaPow unit can be difficult to see under dim light. At first I was worried that the use of LED display will make it consume more power. But the actual standby current I measured is just around 10mA (the product description says '<20mA')
[Accuracy]
Both DROK and PortaPow units claim to have an accuracy of 1%. However, in my comparison against a DMM (digital multimeter), both units missed the goal. But at least the DROK unit is closer to target. For example:
- When I insert the DROK unit in series with my DMM, the DMM reported 1.35A while the DROK reported 1.37A (0.02A too high)
- When I insert the PortaPow unit in series with my DMM, the DMM reported 1.32A while the PortaPow reported 1.36A (0.04A too high)
The result above also indicates that the PortaPow unit introduced more series resistance, hence the output voltage drops lower, resulting in slightly lower charging current.
[Bottom Line]
I consider the DROK USB meter to be a better product than the PortaPow unit, because:
- It can display both Voltage and Current at the same time
- Its LED display is much easier to read than the LCD panel
- It gives more accurate current reading
- It introduces less resistive drop
The only negative I can say about this product: it comes with ZERO documentation. So you really have to read all the specs and operating instructions from the Amazon product page and user reviews.
Currently the DROK unit is available at lower price than the PortaPow unit, so there's no doubt which product I recommend.
[Update on Oct 18, 2014]
I need to point out one limitation of this device: its top port is limited to USB 2.0 speed. I just tested this with my [[ASIN:B00LLER2CS SanDisk Ultra Fit USB 3.0 Flash Drive]]. This drive can deliver 145MB/s in Read speed when connected directly to an USB 3.0 port. When connected through the DROK monitor, however, its READ speed drops to just about 41MB/s.
Top reviews from other countries
On the back of the devices, some limitation of the tester are listed (V3.2-30V, 0-3A).
There are 2 outputs, the output 1 seems to allow more data communication between charger and devices. The output 2 didn't (but allow higher current, as they said). Haven't tested thoroughly for all cases yet.
The tester seemed to work as it was designed to be. Showing proper voltages and current of various chargers and devices. So I recommended it to other.
PRO:
+ extension cord for the tester, some have only usb head for the input without a short extension cord. This is troublesome for some small mulitple usb chargers as there is no space to plug in others.
+ Good built quality. The tester material is good, look good
CON:
- No instructions and limitation of each ports and how to use it properly.
Reviewed in Canada on November 9, 2016
On the back of the devices, some limitation of the tester are listed (V3.2-30V, 0-3A).
There are 2 outputs, the output 1 seems to allow more data communication between charger and devices. The output 2 didn't (but allow higher current, as they said). Haven't tested thoroughly for all cases yet.
The tester seemed to work as it was designed to be. Showing proper voltages and current of various chargers and devices. So I recommended it to other.
PRO:
+ extension cord for the tester, some have only usb head for the input without a short extension cord. This is troublesome for some small mulitple usb chargers as there is no space to plug in others.
+ Good built quality. The tester material is good, look good
CON:
- No instructions and limitation of each ports and how to use it properly.