DROK makes great products. Things you didn’t know you needed, or EXACTLY what you needed at very affordable prices.
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.
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Make it a bundle
We found 1 bundle with this item:
DROK USB Tester, USB-A USB-C 2.0 Multimeter Dual USB Ports PD QC 3.0 with Color LED Display Battery Charger Monitor, 7 Modes Capacity Voltage Current Power for Laptop Power Bank Solar Panel
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From the brand
Enjoy Life, Enjoy DIY.
DROK
- An expert in this field for over 10 years.
- A seller who cares you a lot.
Product Description
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| DROK USB Load Tester | DROK USB Load Tester with Display | DROK USB Meter | DROK USB Buck Boost Voltage Converter | DROK USB Voltage Regulator | |
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| Customer Reviews |
200
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14
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3,871
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304
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| Price | $13.50 | — | $13.99 | — | — |
| Input Voltage | DC 4-25.0V | DC 4.0-25.0V | DC 3. 2~30. 0V | DC 3.5-15V | DC 3.5-15V |
| Operating Current | 0.25-4.00A | 0.03-5.00A | 0. 00~3. 00A (10A max) | - | |
| Max Discharging Power | 25W | 35W | - | ||
| Output Voltage | - | - | - | DC 0.6-30V | DC 0.6-30V |
| Display | 4 bit LED tube | LCD | LED | LED | LED |
Videos
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Videos for this product
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Quick Look: DROK USB-A Tester with Dual USB-A Output Ports
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Videos for this product
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DROK USB Multimeter 200602 200603
DROK
Reviews with images
Duo input
I like the fact that this device will show me volts and amps in on either USB-C or standard USB.. what a lot of people don’t understand is watts can be confusing because voltage and amperage can differThe one issue I have with this device is it subMenus . They are little confusing and hard to understand the manual, it tells you a little but it’s still confusing.
Top reviews from the United States
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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.
Color: BlackSize: USB-AVerified Purchase
My new favorite USB power monitor
Reviewed in the United States on September 13, 2014
With over a dozen USB-powered devices, power banks and AC adapters in the house, I need a USB power monitor to tell me which power source works well charging what devices. I have been using a similar product called [[ASIN:B00DF2485S PortaPow USB Power Monitor]] for the last few months. Recently I purchased this [[ASIN:B00J3JSEG6 DROK Dual-USB Output Charging Detector]] because it advertises several features I like: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.
Images in this review
Top reviews from other countries
Dave
Nice little tool.
Reviewed in Canada on November 1, 2021Color: BlackSize: USB-AVerified Purchase
J-Tec
A very useful device
Reviewed in Canada on December 28, 2021Color: BlackSize: USB-AVerified Purchase
DTr
A decent usb tester
Reviewed in Canada on November 9, 2016Color: BlackSize: USB-AVerified Purchase
DTr
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.
Images in this review
Thomas D.
Excellent USB Multimeter
Reviewed in Canada on October 11, 2021Color: BlackSize: USB-AVerified Purchase
