10 Best Free Voltage Meter Usb In The Us - Black Friday 2024
FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0
Main highlights- 【Updated USB Tester】FNIRSI FNB58 has a 2.0-inch TFT LCD display, integrated USB-A, Micro-USB, Type-C interface. It is a USB voltage andcurrent detection meter and a mobile communication terminal fast charging trigger with gravity sensor
- 【USB tester detection function】The resistance measurement of the wire by the differential pressure method. E-Marker Cable chip reading. DASH Cable data reading. Record of startup time. Onboard temperature measurement. PD monitor. Analog DASH cable
- 【Parameter Recording】The highest six-digit display of voltage, current and power. 10 sets of switchable capacity, power etc. Support low-speed waveform drawing, 2 sps-100 sps sampling rate. Support high-speed ripple drawing, up to 4 M sps sampling rate
- 【Note】In order to respond to the environmental protection policy and reduce the use of paper, FNB58 does not come with paper manuals. You can visit the website of FNIRSI on the box to download the manuals, including product update firmware, APP, etc
- 【Multifunction USB Digital Tester】FNB58 uses external 16-bit ADC, PD protocol physical chip. FNB58 USB tester can monitor the voltage, current, power, resistance, capacity, D+/D- voltage etc, it can be used to test the fast charging protocol of chargers
- 【Fast Charge Protocol Trigger Detection】FNB58 supports QC2.0/QC3.0, FCP/SCP, AFC, PD2.0/3.0, VOOC/WARP, Super VOOC 1.0/2.0 trigger. The above protocols all support automatic monitoring. MTK-PE automatic detection. Support QC2.O->PD2.0 protocol conversion
9.8Exceptional
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Value for Money2
MakerHawkMakerHawk USB Multimeter USB Voltmeter Ammeter Load Tester USB Voltage Current PD Battery Power Capacity Charger Type C Meter Tester LCD Display Cable Resistance QC2.0/3.0/4.0 N10 1.44 Inch Screen
Main highlights- 【Wide range of applications】: It can measure all kinds of USB chargers/PC/laptop/desktop computer/mobile phone/power bank/charger/discharge load/car charger/cable. Support Type-C interface full digital compatible PD protocol/Qualcomm QC3.0/4.0 protocol One table is compatible with multiple protocols, fast charge supports PD QC2.0 QC3.0/4.0 MTK and other protocols
- [Powerful after-sales service team]: As long as you have any questions about the product, we will solve your problem as soon as we receive your email. Your satisfactory purchase experience is our greatest hope! How to email us? Please click "MakerHawk-US" and click "Ask a Question" to email us! Looking forward to your consultation!
- [Note] : When PD power is not connected to the fast charge device, the power is not supplied by default. After the TYPE-C PD is inserted, the test screen is not on. 1. Flip the TYPE-C connector 2. Our built-in TYPE-C interface is used for connection and TypeC interface charger is used. According to the protocol, no load is connected and no power is supplied by default
- [New upgrade]: The product supports two-way insertion detection, increases the current direction to indicate the direction, with a 1.44-inch large LCD screen, 4 operation buttons and 5 connection ports. The plug with gold-plated USB contacts has a strong coating to prevent scratches, stains and damage
- [New reminder function]: Temperature alarm: over 45°C, the temperature display will flash; Voltage alarm: less than 3.8V or greater than 30V, the voltage display will flash; Current alarm: greater than 3A, the current display will flash
- [Flexible color display interface]: Supports 360-degree rotation of the screen to meet reading at any angle. You can rotate the screen by pressing the button corresponding to the horizontal menu bar. When plugged into various digital devices at any angle, positive readings can also be made, making the measurement more convenient
9.6Exceptional
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3
Eversame22% OffEversame 2 in 1 Type C USB Tester Color Screen LCD Digital Multimeter, USB C Voltage Current Voltmeter Amp Volt Ammeter Detector USB Cable Charger Indicator DC3.6-30V/0-5.1A
Main highlights- WIDE RANGE OF APPLICATION: Thanks to the PD protocol quick charging mode measurement technology, this new multimeter supports the updated iPhone X mobile phone. (Support iphone 8 / 8P / iPhone Xs quick charging, 29W power, 5V3A / 9V3A / 12V2.5A / 15V2A). It also can be applied to test other type C devices, Compatible With Galaxy S10/S9/Note 10 +, ChromeBookPixel, OnePlus and More.
- UPGRADED MULTIFUNCTIONAL USB C POWER METER: Detects the charging status and process of your USB-enabled or type c-enabled devices. Supports QC3.0, QC2.0 and BC1.2. A Must Gadget checks the charging performance (charging speed and quality) of the output wall/car/solar panel chargers and USB charging cables. It can be also used to find the highest current of the Wireless Charger, and test capacity and electric energy of power bank.
- PROFESSIONAL SAFETY GUARD: Featured with over-voltage protection, over-current protection, under-voltage protection, low energy protection and alarm system. This upgraded USB Type C tester can detect safety and maximally protect the appliances from damaging. It will cut off output automatically and alarm by sound, while it will save data when power off suddenly.
- MULTIPLE COLOR SCREEN DISPLAY MODES: New upgraded version offers 8 LCD main color screen display interfaces, allowing switching the display interface by pressing the key. With the new interface settings, this instrument can monitor voltage, current, capacity, electric quantity, power, load impedance, D+/D- voltage and other data of USB.
- EVERSAME PROMISE: We have always believed that a stable and continuously improve product quality. We trust our products and we offer worry-free 18-month. For any reason you are unsatisfied with our product, just feel free to contact support for exchange or refund. WHAT WE PROVIDE: 1X USB Tester. (Note: If the USB Tester doesn’t display any parameters, please insert the small adapter being sent with the package into the side hole on the USB Tester, to trigger the PD Charging Function. )
9.5Excellent
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4
MakerHawk18% OffMakerHawk USB 3.0 Tester, USB Power Meter, 3.7-30V 0-4A Voltage Tester Multimeter, USB Current Meter Tester, IPS Color Display Voltmeter Ammeter, USB Charger Tester AT34
Main highlights- Power-off storage, data guaranteed: AT34 has a power-off storage function, which can store capacity and power data when the mobile power supply is powered off, which is convenient for subsequent viewing and facilitates the measurement of the capacity and power of the mobile power supply. Note: Other USB testers without power-down storage function cannot test capacity and power
- Multi-function tester: Real-time detection of the state of charge, voltage, current, capacity, electricity, power, equivalent impedance, temperature and other indicators of electrical appliances at a glance. Measuring voltage: 3.7V-30V; measuring current: 0-4A. The tester is widely used in the quality inspection of 3C digital peripheral products, and is the first choice for digital 3C digital game enthusiasts and electronic enthusiasts
- Measure the quality of the charger: connect the same load, compare no-load and load, the larger the voltage drop, the worse the charger capacity and quality; the voltage drop is not obvious or the voltage rises (leisure loss compensation function). The better the load capacity, the better the quality
- Fast charging identification, widely compatible: AT34 supports QC2.0, QC3.0, i Phone 2.4A/2.1A/1A/0.5A, Andriod DCP, fast charging protocol identification, allowing you to know the charging status of your phone anytime, anywhere
- 4-digit accuracy, more accurate measurement; measure load equivalent impedance and power; thermometer function, free switching between Celsius and Fahrenheit: using high-precision thermistor sensor; USB 3.0 interface: compatible with USB 2.0, support high current test, support USB3.0 Interface mobile hard disk and U disk test. Adopt 0.96-inch IPS high-definition color LCD screen, 160-degree wide viewing angle, high brightness and long service life
9.2Excellent
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5
Hapytrip12V/24V USB Outlet Quick Charge 3.0 Dual USB Car Charger Socket with Blue Voltmeter, Waterproof Aluminum Cigarette Lighter USB Charger DIY Kit for Car Marine Motorcycle RV Boat Golf Cart, etc.
Main highlights- [Wide Compatibility] The charger is suitable for DC 12/24V cars, boats, ships, motorcycles, ATVs, RVs, etc. Also, the dual USB ports are suitable for charging iPhone, Samsung, iPad, Android tablets, power banks, video game controllers, sports watches, etc.
- [New Push Button Switch] The new version is designed with a push button switch that can be turned on or off at any time. Avoid repeated plugging and unplugging of the charging cable. Helps to save energy.
- [LED Voltmeter Display] Features a blue LED voltmeter that automatically monitors the vehicle's battery and electrical system and displays the car's voltage on the screen. The Hapytrip dual USB charger receptacle lets you know the health of your battery while you drive.
- [Dual QC 3.0 USB Ports] Equipped with high quality dual QC 3.0 USB ports, it charges two compatible devices up to 4x faster than traditional charging and is compatible with QC 2.0/1.0. It also provides the fastest charging for all non-fast charging devices.
- [Aluminum Material] The advanced all-aluminum body with scratch-resistant technology keeps it sturdy and keeps the 12v USB outlet looking like new forever. The upgraded metal USB cigarette lighter socket will not overheat at high temperatures, which is safer than plastic ones.
- [All-around protection] The 12V USB car socket is UL CE and ROHS certified with overload, overcurrent and short circuit protection to ensure charging safety; this USB car charger guards the safety of your devices. The waterproof and dustproof rubber USB cover can better protect its internal circuitry and effectively increase its service life.
- Please note: The bottom of the product is marked with "+" and "-", the red line connects to +, the black line connects to -; if the connection is reversed, it will not be energized.
- Easy installation: You can replace your car's original cigarette lighter socket with this USB charger. Or, you can DIY the installation by drilling a 1.18 inch/3cm hole, inserting the charger and tightening the ring, then connecting the positive and negative wires（Red wire to Silver plug(+), Black wire to Golden plug(-) ）. See the pictures for detailed installation instructions.
9.1Excellent
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6
PALUMMA18% OffPALUMMA 24W/4.8A Dual USB Car Charger, 12V to USB Outlet with Cigarette Lighter Voltage Meter LED/LCD Display Battery Low Voltage Warning (Black)
Main highlights- Smart IC Technology - High-speed charging with 5V 2.4A of dedicated adaptive power output in each USB port, providing the maximum charging speed your device supports. Charging stops when battery is full.
- Safety On The Go - Soft LED lights help you locate the ports in darkness, also alarms flashing green lights for low voltage without being distracted on driving.
- Rest Assured of Quality - Design with all-metal housing for long time usage, professional protection against short circuiting, over-heating, over-current and over-charging, Certified by CE, FCC, RoHS.
- Real-time Monitoring - Concise LCD screen displays vehical's operating voltage once the charger is pluged into cigarette lighter socket, and works as an ammeter by displaying the total current during the charging process.
- Durable Reliability - Crafted of special fire proof material with anti-oxidative Zinc Alloy, compact design and all-metal housing facilliate a super solid structure, anti-static and fastens cooling frame. If by any chance our charger doesn't fit, a refund will be provided. You won't lose anything.
8.9Very Good
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7
FancyWhoopUSB C Tester Power Meter, 4-30V 0-12A Digital Multimeter, Large Color Screen Type-C Interface Voltage and Current Tester Meter, Tester for Charger Power Bank Capacity Detector
Main highlights- We Guarantee You Will Receive: If there are any problems during use, you can contact us online or leave us a message at any time. We will assist in resolving the issue as soon as we receive the information. Meanwhile, we offer product returns for any reason, including but not limited to unwanted items? Not suitable? Does it match the description? How many times has this product failed due to collisions? Waiting for a series of inconspicuous damage marks, etc. We have enough heart to support our worry free return and exchange policy within one year
- Large Screen Color Display: This USB C Power Meter features a 1.06-inch ISP color high-definition display with high resolution and clarity. Different test data display different colors, making it easy to accurately record data. It can display voltage, current, power, capacity, energy, time, maximum voltage, maximum current, maximum power, current direction, and CPU temperature. What's even more impressive is that you can click the button to switch the interface, double-click the button to change the display direction, and freely switch between three display modes
- Improved Measurement Accuracy/Level: Compared to the old version of the current hairstyle, our KWS-2302C version can accurately measure accuracy/level: ± (1%+5). The data is more accurate for detecting charging devices such as chargers, mobile phones, tablets, and power banks. Make this Type-C Digital Multimeter suitable for more 3C digital peripheral products, making it the first choice for digital gamers and electronics enthusiasts
- Fast Charging Testing & Power-off Storage: This USB C tester supports fast charging tests such as PD2.0, PD3.0, PPS, QC2.0, QC3.0, FCP, SCP, AFC, PE, DASH, VOOC, SuperVOOC, etc. It can detect the voltage and current of fast-charging devices and display them on the screen. Similarly, we also support a Power-off storage function that stores capacity and energy data when the mobile power is turned off, which is convenient for subsequent viewing and testing
- All C-port Input & Output: Our Tester uses Type-C for both input and output ports. Please believe that this will eventually be an inevitable trend in future electronic charging devices! This C-type tester is equipped with a maximum 12A high current terminal for greater stability. Measurement current: 0-12A; Measurement voltage: 4V-30V. Suitable for the vast majority of electronic charging devices. Equipped with a bidirectional current testing function, providing you with a visible charging speed experience
8.8Very Good
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8
Klein Tools18% OffKlein Tools ET900 USB Power Meter, USB-A Digital Meter for Voltage, Current, Capacity, Energy Resistance
Main highlights- Voltage and current overload detection
- Tests most common standard USB-A ports, including Qualcomm Quick Charge ports
- Store and recall up to 10 readings
- Hi-resolution LCD for clear visibility in environments with low ambient lighting
- Durable cable to allow easy access to hard-to-reach ports
- Continuously monitor up to 1000 hours of voltage, current, capacity/charge delivered, energy, and resistance (calculated)
- 3 to 20V DC; Current: 0.05 to 3A
8.7Very Good
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9
MakerHawkUSB C Power Meter USB C Tester, USB Multimeter 4-30V 0-12A Voltage Current Capacity Energy Power Digital Tester for Tablet Chargers Power Bank Cable
Main highlights- 【Wide Range】This USB voltage meter can measure voltage 4V-30V, current 0A-12A, Timing 0-99hours, power 0W-360W, capacity 0mAh-99999mAh, energy 0Wh-99999Wh
- 【USB C Power Meter】This USB tester can measure voltage, current, power, capacity, energy, time, temperature of USB-C devices, such as tablets, chargers, power banks, cables, etc. It supports bidirectional current and offline data storage
- 【OLED Display】This USB multimeter has a 0.77 inch OLED display with high resolution and brightness. It can show voltage, current, power, capacity, energy, time, maximum voltage, maximum current, maximum power, current direction and CPU temperature. Click the button to switch the interface, double-click the button to change the display direction, making viewing more convenient
- 【Fast Charge Test】This USB C tester supports fast charge test for PD2.0, PD3.0, PPS, QC2.0, QC3.0, FCP, SCP, AFC, PE, DASH, VOOC, SuperVOOC and more. It can detect the voltage and current of the fast charge device and show them on the screen
- 【Easy to Use】This USB power tester is plug and play, no need to install any drivers or software. It has a compact and portable design, easy to carry and store. It is a must-have tool for testing USB devices
8.6Very Good
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10
diymorediymore USB C Power Meter Testers,USB C Tester Power Meter Color Screen,Digital Multimeter,Voltage Current Tester USB Battery Checker USB Voltage Current Voltmeter USB Mobile Tester USB Power Tester
Main highlights- USB C Voltage Meter Storage Function: The USB C meter tester has an integrated storage chip. If the connection is accidentally disconnected during the testing process,the previous test data can be automatically restored after reconnecting.
- USB C Tester3 Parameters: The usb cable tester not only displays instantaneous voltage, current, power, and temperature, but also counts the continuous working time, consumed power, as well as the maximum voltage, maximum current, and maximum power during the entire charging process.
- Support for Additional Charging Protocols: The usb power meter supports charging protocols such as PD2.0, PD3.0, PPS, QC2.0, QC3.0, FCP, SCP, AFC, PE, DASH VOOC, Super VOOC.....
- Power Bank Capacity Power Consumption Meter: Before usb meter testing the power bank, please fully charge it, insert it into the USB C meter, double-click to delete data, and then connect the phone (continuous discharge is required).
- 240W USB C Power Meter: The digital multimeter USB tester can check the charging performance of the output wall/car/solar panel charger and USB charging cable. Measurement voltage: 4V-30V;Measurement current: 0-12A.
8.5Good
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