Best Current Testers 2025

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Last Updated - 10.09.2025

Best Choice

01

KKnoon

KKnoon 1600 W Photovoltaic Panel Multimeter Solar Panel MPPT Tester Open Circuit Voltage Tester Maximum Power Point Voltage Current Power Test Meter LCD Display with Backlight

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9.9

Exceptional

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Wide applications: suitable for photovoltaic panel manufacturers, photovoltaic panel operators, photovoltaic panel installers, photovoltaic panel users, photovoltaic enthusiasts, etc.
Solar energy: Powered by a solar panel (not included), it eliminates the need for a battery and is economical and energy efficient. Five protection functions: With multiple protection functions such as over-temperature protection, over-voltage protection, over-current protection, reverse polarity protection and over-current protection.
Manual measurement: press the test button [Manual MPPT] at will, the instrument will automatically adjust the test interval time to the current power value, the greater the power, the longer the interval time and update the digital display.
Backlit LCD Display Equipped with a clearly defined LCD display with backlight function, easy and convenient operation. MULTIFUNCTIONAL DESIGN 1600W PV panel multimeter, support for automatic/manual detection mode switch, measuring the maximum power point power of PV module, maximum power point voltage, maximum power point current, measurement of the open-circuit voltage of PV module.
Automatic measurement: simple operation, when you press the test button [Auto MPPT], the multimeter will test itself according to the current power value, the instrument automatically adjusts the test interval time according to the size of the current power value and updates the digital screen.

78,99 €
02

luolety

FNB58 USB Tester, 4-28V USB Voltmeter, PD Trigger, Digital Voltmeter, Current Tester, USB Type C, Fast Charge Protocol, Capacitance Tester, Max 7A Ammeter

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Updated Designed USB Tester The USB tester FNB58 features a 2.0 inch full-color TFT LCD display with extremely wide viewing angle and built-in USB-A, Micro USB and Type-C interface. It is a highly reliable, high-security USB voltage and current detection device and a fast charging trigger for mobile communication terminals. Gravity sensor, automatically changes the display direction.
Parameter Detection and Recording The highest six digit display of voltage, current and power, the highest resolution is 0.00001(V/A/W). 10 sets of switchable capacity, power and time statistics. 1 set of voltage and current curve recordings, maximum support 9 hours. Supports slow waveform drawing (voltage, current, D+/D) and a sampling rate of 2 PLC -> 100 SPS. Supports high-speed ripple drawing (voltage, AC pairing) with a sampling rate of up to 4 million SPS.
Fast Charge Protocol Trigger Detection FNB58 supports trigger detection of various fast charge protocols, QC2.0/QC3.0 trigger, FCP/SCP trigger, AFC trigger, PD2.0/3.0 trigger, VOOC/WARP trigger, Super VOOC 1.0/2.0 trigger. The above protocols all support automatic monitoring. Automatic MTK PE detection. Supports QC2.O->PD2.0 protocol conversion.
Curve display with four functions: 1. Real-time voltage and current curve to display charging curve changes in real time. Unusual charging is detected immediately. 2. Offline curve recording supports up to 9 hours of offline voltage and current curve recording and is displayed while charging. 3. The D+D1 voltage curve can display the changes of the charging protocol and master it in time; 4. The ripple measurement curve of the high-speed power supply can show you the wavy measurement of the charger.
10 groups for energy recording battery capacity calculation: supports 10 sets of charge and discharge energy data records. Built-in calculation formula for battery capacity. The battery capacity can be quickly calculated from the recorded data.

59,99 €
03

Retoo

Retoo Multi-function USB Tester Multimeter with LCD Display, 4V - 20V, USB Digital Current Voltage Meter, Voltmeter, Ammeter, Capacity Power Charger Detector, Current A, Voltage V, Capacity mAh

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Universal device and application - The V20 USB meter is a universal meter that checks power consumption and voltage. Thanks to the function of both volts and ammeters, the uses of this product are very versatile. It can be used both at work and in the household. With the measuring device, you can check the size of the battery in the power bank or its voltage.
Robust gauge - Features a reset button that allows you to easily reset the measurements. The display also shows the current battery status. The meter is compatible with USB 2.0. If you want to make your work easier, this is the product for you. This makes your work easier and more enjoyable. The device is very easy to store thanks to its small size.
Plug & Play System - The meter is equipped with the plug & play system, so you don't need to install unnecessary drivers or software, which makes the configuration of the device very easy. Simply plug in and the device works! Pay attention to its technical data, for example, if you connect a fast charger with 10A or more to it, the meter can only send up to 3A due to its protection.
Clear LCD display - The device has an LCD screen on which the voltage is displayed. This allows you to see the capacity of charged or discharged batteries. The device has a memory, thanks to which, when testing a phone (which is exhausted) the measurement will save until you reset it with the reset button. The display shows four readings: voltage, power consumption, measuring time and capacity of e.g. batteries or power bank.
Accurate measurements - This meter is very accurate and displays a variety of information on the display. The capacity of the gauge ranges from 0 to 99999 mAH. The time measurement takes place from 0 to 99 hours. The meter measures the current between 0A and 3A. The tolerance of voltage and current measurement is only 1%. This voltmeter measures voltages from DC 4V - 20V. So you have a variety of information about the current voltage after measurement.

4,98 €
04

YEREADW

YEREADW USB Tester Meter 2-in-1 Type C Current Meter LCD Multimeter Digital Current Meter Power Meter, Voltage Voltmeter, Current, Power Capacity Detector (USB Tester)

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide Range of Applications This USB meter supports the latest PD fast charging protocols, such as PD3.0/PD2.0, QC3.0/QC2.0, BC1.2 as well as USB A or USB-C ports. It is compatible with the latest iPhone 15 Pro, MacBook Pro, MacBook, iMac, iMac Pro, Dell XPS, Acer Aspire, HP Spectre, Lenovo Thinkpad, Razer Blade Stealth, Chromebook, Microsoft Surface Pro and more Type-C devices and chargers.
Testing the power bank capacity: in addition to testing the capacity with a defined load when discharging, you can also calculate the capacity with a formula. Test the capacity of the power bank by charging it from 0% to 100%. To calculate the capacity, divide the Wh value by the battery voltage. Example: If the battery voltage is 3.7V and the test shows 35Wh, the formula is: 35Wh ÷ 3.7V = 9.46Ah = 9460mAh.
PROFESSIONAL SAFETY GUARD This usb c tester is equipped with over-voltage protection, over-current protection, undervoltage protection and low energy protection. The improved USB Type-C tester detects security problems and protects your devices from damage. It automatically turns off the output and stores the data when the power suddenly fails.
IPS Color Display Interface This USB tester offers a new and improved version with eight different LCD color display interfaces. You can easily switch between interfaces by pressing a button to monitor voltage, current, capacity, electrical voltage, power, load impedance and other important data - all in a clear and vibrant display.
Advanced Charging Performance Monitoring This USB current meter is your essential tool for monitoring the charging performance of all USB and Type-C devices. Ideal for checking the charging performance of wall/solar chargers and USB charging cables. Also suitable for testing the capacity and electrical energy of power banks. Measuring Range: Voltage: 3.6V-32V; Current: 0-8.0A

15,98 €
Value for Money

05

YOJOCK

USB Tester Meter 2-in-1 USB C Current Meter Digital Multimeter Current Meter Power Meter, Voltage Voltmeter, Current, Power Capacity Detector

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15% Off
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide range of applications: the USB tester comes with an OTG adapter, supports PD3.0/PD2.0, QC3.0/QC2.0, BC1.2 and USB A or USB C port, supports the updated iPhone 13 Pro mobile phone. (Supports iPhone 13/12/11/X/iPhone Xs fast charging, 5V3A/9V3A/12V2.5A/15V2A). Compatible with new MacBook Pro, MacBook, iMac, Dell XPS, Acer Aspire, Chromebook, Microsoft Surface Pro and more Type-C devices and chargers.
Test the capacity of the power bank: Before testing the power bank, please fully charge the power bank, insert the USB current meter and double click to delete the data, and then connect the load or mobile phone (continuous discharge is required). Make sure the discharge voltage is 5V or 9V.
Professional safety protection: equipped with surge protection, over-current protection, undervoltage protection, low energy protection. This improved USB type C tester can detect safety and protect the devices from damage to the maximum. The output is automatically interrupted while data is saved when sudden power off.
Latest updated IPS colour display: the updated version offers 8 IPS main colour screen display interfaces that allow you to switch the display interface by pressing the button. The fonts are larger in one mode, which can read the data at a glance and make viewing easier. This instrument voltage, current, capacity, electrical size, power, load impedance, etc.
Improved multifunctional USB C meter: the multimeter USB tester – must gadget checks the charging performance of the output wall/car/solar panel chargers and USB charging cable. It can also be used to test the capacity and electrical energy of the power bank. Measuring voltage: 3.6V-32V; Measuring current: 0-8.0A

15,28 € 17,98 €(15% Off off)
06

YEREADW

YEREADW USB C Tester Meter Type C Multimeter Digital, 4-30V 0-12A PD Voltmeter Power Meter Capacity Voltage Tester Current Meter, USB Power Capacity Detector (KWS-2303C)

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15% Off
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Upgraded Curve Function This usb c tester has upgraded curve function to better record real-time voltage and current. You can set the time of curve display (5min/15min/60min/2h) by long pressing the button to monitor the real-time voltage and current. In addition, the voltage and current of each cell are automatically adjusted to the actual voltage and actual current.
Improved Measurement Accuracy Our USB-C tester can accurately measure ±(1%+5) accuracy. The data is more accurate for detecting chargers such as chargers, mobile phones, tablets and power banks. This type c knife is suitable for more 3C digital peripherals and is the first choice for digital gamers and electronics enthusiasts.
ISP COLOR DISPLAY INTERFACE This USB-C power meter features a 1.06 inch ISP color display with high resolution and clarity. It can display voltage, current, power, capacity, energy, time, maximum voltage, maximum current, maximum power, current direction and CPU temperature. You can easily switch between the interfaces by pressing a button. By double-clicking the button, you can rotate the displayed content.
Detection of various fast charging protocols: the USB power meter supports PD2.0/3.0, QC2.0/3.0, FCP, SCP, AFC, PE, DASH VOOC and Super VOOC protocol charging. Whether you are testing chargers, power banks or a USB-C device, this tester is the perfect choice.

13,42 € 15,79 €(15% Off off)
07

KAIWEETS

Non-Contact Voltage Tester/Phase Tester, KAIWEETS AC Current Tester Non-Contact Continuity Tester 12-1000V/48V-1000V, Acoustic Buzzer and Light Display, with LCD Display and Torch

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

TRIPLE VOLT ALARM: With audible and visual signal, and on-screen bar when voltage is applied. Up to 8 bar charts on the HD LCD screen for easy interpretation/display. The acoustic voltage indicator beeps with a higher frequency, the higher the measured voltage is or the closer the voltage source. The screen lights up red or green to distinguish live/zero wire.
Safety: double insulation/high voltage alarm for voltages above 90 V - the screen turns red and the safety symbol on the screen lights up.
Non-contact test: simply place the tip near a terminal block, socket or power cord. When the tip glows red and the pen beeps, you know there is voltage. Handy circuit tester and continuity tester for electricians, homeowners.
Bright LED torch / low power indicator at battery voltage below 2.5 V / automatic shut-off after 3 minutes without operation or signal detection / portable pen clip. 3 year product warranty. Questions? We are happy to assist you.
2 adjustable sensitivities: standard mode (measuring range 48 ~ 1000V AC) and sensitivity mode (measuring range 12~1000V AC). Both can be changed freely with the S button.

9,99 €
08

YOJOCK

USB Tester Meter, USB C Power Meter, Current Meter, 2-in-1 Digital Multimeter, Voltage Voltmeter, Current, Charging Current, Power Capacity, Working Time Detector Ammeter with Type-C Adapter (A3)

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide range of applications: Widely used in the quality testing of digital devices with USB-A and Type-C peripherals. Ideal for testing and determining the actual performance values of different chargers and devices, e.g. PC/laptop/desktop computer/mobile phone/power bank/charger/discharge charger/car charger/cable. With this tester, you can clearly see what happens when charging various USB devices, from iPhones to tablets to batteries.
Unbeatable design: this USB power meter with gold-plated USB contacts has a strong coating to prevent scratches, stains and damage. This upgraded USB Type-C tester can detect safety and maximally protect the devices from damage. The output is automatically interrupted while the data is saved in the event of a sudden power off.
Multifunctional USB tester: This USB tester supports micro USB or Type-C port and fast charging mode detection, it can detect QC2.0/QC3.0, voltage/current/power/capacity detection, cable impedance measurement. A must-have gadget checks the charging performance (charging speed and quality) of the output wall/car and USB charging cable. It can also be used to test the capacity and electrical energy of the power bank. Measuring voltage: 4.5V-24.0V; measuring current: 0-8.0A
Important note: If the PD power supply is not connected to the fast charger, the power supply is not provided by default. Both the charger and charger must support fast charging. Since the tester is a one-sided protocol design, please try to turn the Type-C cable over if the display does not light up and try again.
Flexible colour display interface: with a 1.44 inch LCD screen, 4 control buttons and 5 connection ports. Supports 360 degree rotation of the screen to allow reading at any angle. You can rotate the screen by pressing the button corresponding to the horizontal menu bar. When connected to different digital devices at any angle, positive readings can also be determined, making the measurement more comfortable

22,79 €
09

DollaTek

DollaTek FNB58 Digital Voltmeter Ammeter USB Tester Type C Fast Charge Detection Trigger Capacity Measurement Ripple Measurement with Bluetooth 4-28V Monitoring Voltage

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

With a maximum of six digits, the FNB58 displays voltage, current and power with the highest resolution of 0.00001 (V/A/W). It allows you to switch between 10 sets of capacity, performance and time statistics. In addition, it provides a set of voltage and current curve recordings with a maximum recording time of 9 hours.
The USB tester FNB58 is a highly reliable, highly secure USB voltage and current meter and a fast charging trigger for mobile communication terminals. It has a 2.0 inch full-colour TFT LCD display with ultra-wide viewing angle and an integrated USB-A, micro USB and Type-C interface.
The FNB58 supports trigger detection of various fast charging protocols, including QC2.0/QC3.0, FCP/SCP, AFC, PD2.0/3.0, VOOC/WARP and Super VOOC 1.0/2.0. All mentioned protocols are automatically monitored, and it also supports automatic detection of MTK-PE. It even offers a conversion from QC2.O to PD2.0 protocol.
The FNB58 offers additional features that set it apart from other USB testers. It can measure the internal resistance of the cable with the differential pressure method and read e-marker cable chip and DASH cable data. The tester records the switch-on time, performs an onboard temperature measurement and allows PD monitoring. It also supports analogue DASH cable functionality.
Bluetooth connection, data synchronization, convenient and efficient. Supports slow waveforms (voltage, current, D, D) drawing, 2sps->100sps sampling rate. Supports high-speed ripple (voltage, AC coupling) drawing, up to 4 Msps sampling rate.

49,04 €
10

Sporgo

Voltage Tester Car Circuit Test Pen, Sporgo 3-36 V DC Car Power Tester with Crocodile Clip Spring Wire, Voltage Tester with Digital LCD Indicator Lamp, Car Test Lamp for Car/Truck (Red)

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8.1

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Widely used: voltage tester car circuit test pen can be used for polarity detection, voltage test, fuse detection, short circuit tracking and positioning, etc., which helps diagnose and troubleshoot problematic cables. Ideal for quickly checking car headlights, turn signal circuits, defective sockets, plugs, fuses, broken cables and more.
Spring wire + alligator clip design: car test lamp for car comes with alligator clip and spring wire, the longest can be up to 1 metre, you don't have to worry about the temperature of the parts rising and burning the wire. Car test lamp with crocodile clip, small, lightweight, easy to use with one hand. Voltage tester Improve your productivity.
Polarity tester and frequency prediction: the voltage tester car circuit test pen is suitable for all on-board networks from 3-36 V. The car truck test lamp quickly distinguishes positive and negative polarity due to the red and green of the built-in LED. When connected to a 3-36V AC signal, the digital screen display can be used to estimate the frequency response.
Long probe test pen with indicator light: car circuit test pen has a live voltage display. The brightness of the bulb at the end of the current tester with crocodile clip changes with the strength of the voltage. Voltage tester can quickly and accurately measure the DC voltage of the car battery and display the measured value on the digital display.
High-quality material: The handle of the test lamp is made of high-quality copper and the probe is made of hardened carbon steel with chrome-plated surface. Durable, sharp stainless steel probes with protective rubber tips for piercing wires and current tester with alligator clip even for hard-to-reach areas.

9,99 €