---
product_id: 154985357
title: "USB C Tester,KJ-KayJI 2 in 1 Tester Color Screen IPS Digital Multimeter(2024),Voltage,Cur,Pwr,Resistance,Elec,Temp,Capacity,Tme,Fast Charging,with USB Clip Cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2"
brand: "kj-kayji"
price: "169 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Kj Kay Ji"
url: https://www.desertcart.pl/products/154985357-usb-c-tester-kj-kayji-2-in-1-tester-color
store_origin: PL
region: Poland
---

# 32V max voltage 9 IPS color display modes Supports PD3.0/QC3.0 fast charging USB C Tester,KJ-KayJI 2 in 1 Tester Color Screen IPS Digital Multimeter(2024),Voltage,Cur,Pwr,Resistance,Elec,Temp,Capacity,Tme,Fast Charging,with USB Clip Cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2

**Brand:** kj-kayji
**Price:** 169 zł
**Availability:** ✅ In Stock

## Summary

> 🔋 Charge smarter, test faster — never miss a watt!

## Quick Answers

- **What is this?** USB C Tester,KJ-KayJI 2 in 1 Tester Color Screen IPS Digital Multimeter(2024),Voltage,Cur,Pwr,Resistance,Elec,Temp,Capacity,Tme,Fast Charging,with USB Clip Cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2 by kj-kayji
- **How much does it cost?** 169 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/154985357-usb-c-tester-kj-kayji-2-in-1-tester-color)

## Best For

- kj-kayji enthusiasts

## Why This Product

- Trusted kj-kayji brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Portable Tech Essential:** Compact, lightweight design with USB clip cable and alligator clips for versatile on-the-go diagnostics.
- • **Precision Power Metrics:** Accurately measures voltage, current, power, resistance, and temperature for all USB types.
- • **Vibrant IPS Color Display:** Switch between 9 clear, customizable interfaces for real-time data at a glance.
- • **Fast Charging Compatibility:** Instantly verifies PD2.0/PD3.0, QC2.0/QC3.0, BC1.2 protocols to ensure peak charging speed.
- • **Comprehensive Cable & Charger Testing:** Diagnose cable quality and charger output to avoid slow charging and device damage.

## Overview

The KJ-KayJI USB C Tester is a compact, high-precision digital multimeter featuring a vibrant 9-mode IPS color screen. It measures voltage up to 32V, current, power, resistance, temperature, and capacity across USB A, USB C, and Micro-USB cables. Supporting fast charging standards PD3.0, QC3.0, and BC1.2, it ensures your chargers and cables deliver optimal performance. Ideal for tech-savvy professionals, it offers detailed diagnostics for chargers, cables, power banks, and wireless chargers, all in a sleek, portable form factor with included USB clip and alligator cables.

## Description

desertcart.com: USB C Tester,KJ-KayJI 2 in 1 Tester Color Screen IPS Digital Multimeter(2024),Voltage,Cur,Pwr,Resistance,Elec,Temp,Capacity,Tme,Fast Charging,with USB Clip Cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2 : Tools & Home Improvement

Review: Works great! - This is high tech. User friendly. Compact piece of technology at your fingertips and quality is still there. Excellent display screen for voltage ,amps, milliamps and is an excellent quality meter with accurate readings. some things can be programmed for your personal taste of how it should be set. Many different screens. How many amp hours it takes to charge your battery or how many amp hours are left on your battery. It's extremely easy answers to all your electronic questions by reading the instructions to acquire the answer you're looking for. Has different languages but I forgot exactly which ones my apologies. Excellent value for the money. I consider this a must-have item for anybody that's into electronic troubleshooting and observing electrical input, output etc. Beautiful color screen, easy to read, small font. Well laid out display screen. Amazing piece of technology that works when you wanted to with quality behind it. Thanks
Review: Great little tester, with some quirks - I use this for testing USB-C chargers, battery packs, and cables. I love that it gives you so much information - not just V and mA like the Satechi, but watts (which is the most important metric overall!) and also total charge (mAh) and total energy (mWh), elapsed time and more. I used it to know that my Pixel 2 XL wasn't getting 9V from the USB-C charger I was using; replacing that gave me much faster charges. The UI is a bit wonky; the "W" for watts is some kind of strange character, but you get used to it. To reset the charge time, total charge, and total energy, each one is a separate reset, so to reset all you have to double-click, then triple-click, then quad-click. The "input" and "output" USB-C ports are labeled backwards, and the "manual" (even the new one) is pretty hopeless. "Resistance" is a bit weird, it's just V/I as far as I can tell, a bit meaningless for this application. (It won't measure your resistors.) And I wish it had a display mode that showed watts in larger font. But on the good side, it's accurate, the display is clear, it has all the info you could want, I like that you can flip it upside down, and also it remembers your settings between uses which is great. And the multiple inputs & outputs are super useful. You can test pretty much anything USB-related with it. Although, it says it can test batteries: not really so much. It comes with alligator-clip cables which you can hook to a voltage source of 3V or more (i.e. not a AA or AAA battery) and it'll measure voltage, but not under load which is what a battery tester needs to do. That's not why I bought it though so I'm good with that. On the other hand, if you have a USB AA/AAA battery charger, you can hook this tester into that and measure the total charge sent to the batteries you're charging.

## Features

- 【Multiple detection functions of USB C Tester】USB C Tester can monitor the voltage,current,power,resistance,power,capacity,temperature of Micro-usb Cable/USB C Cable/usb a to usb c Cable/USB C/USB A device,charging time,Test Group and fast charging.Check the performance of USB C/USB A charger and USB C Cable/usb a to usb c Cable (charging speed and quality). It can also be used to find the maximum current of wireless chargers and test the capacity and power of power banks.
- 【IPS Color Display Screen】Provides 9 IPS color screen display interfaces, and the display interface is switched by buttons. USB Tester can detect data such as voltage, current, power, resistance, electricity, temperature, capacity, timing, fast charge, D/D-, V/V-, etc. It can also detect whether the charger, cable supports fast charging. (IPS HD color screen is clearer. Only the Screen rotation interface supports 180-degree flipping of the screen)
- 【Test Power Bank/Phone mAh】Test Power Bank, 2 clicks to clear the Tester mAh data, fully charge the power bank, discharge quickly with Load, "Cap" will show how much mAh Capacity the Power bank has. Multiply by 90%. Test the phone, the phone is fully charged, 3 clicks to clear the Tester WH data, the battery is exhausted, WH/3.75=mAh Capacity x 1000 x 90%=close to cell phone battery capacity (Power bank battery same)
- 【Test charger voltage and current】Support USB A Charger, USB C Charger. Connect Load, adjust the current to the charger support current, if the tester shows that the voltage and current match the charger support current, the quality of the charger is excellent, otherwise the quality of the charger is not good.
- 【Test cable voltage and current】Support testing Micro-usb cable, usb a to usb c Cable, usb c to usb c Cable. Use a charger with excellent quality after testing, insert the cable, connect the load to test the voltage and current of the cable, if the tester The displayed voltage and current are in line with the current supported by the charger, the cable quality is excellent, and the charging speed is fast; otherwise, the cable quality is not good, and the charging speed is slow.
- 【Test whether fast charging is supported】Charger, insert the tester and Load into the charger to adjust the current to 3A, and "FCP" and "FAST" appear on the display interface, indicating that the charger supports fast charging. Cable, after connecting the charger, insert the cable into the tester and connect to Load, adjust the current to 3A, the display interface shows "FCP" and "FAST", indicating that the Cable supports fast charging.
- 【WIDE RANGE OF APPLICATION】must use the OTG adapter (Micro-usb adapter) that comes with the USB tester, which supports PD3.0/PD2.0, QC3.0/QC2.0, BC1.2 and USB A or USB C ports , support newer iPhone/iPad Pro and Android phone. Compatible with new MacBook Pro, MacBook, iMac, iMac Pro, Dell XPS, Acer Aspire, HP Spectre, ASUE Zenbook, Lenovo Thinkpad, Eluktronics, Razer Blade Stealth, Chromebook, Microsoft Surface Pro and more USB C/USB A devices and charging device.
- 【Important Tips and 18 Month Warranty Service]】:When your device does not have a USB port, you can use an alligator clip to clamp the positive and negative poles and convert to USB before testing. When your USB-C device cannot be tested, please insert a small adapter, the small adapter will start the tester. If you receive a defective USB tester or if you have any questions, please contact us first to obtain a valid warranty replacement service for replacement or other assistance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07X3HST7V |
| Best Sellers Rank | #84,213 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #126 in Multi Testers |
| Brand | KJ-KayJI |
| Brand Name | KJ-KayJI |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 2,165 Reviews |
| Included Components | USB Tester+USB Clip cable |
| Item Dimensions | 2.5 x 2 x 0.4 inches |
| Item Height | 0.4 inches |
| Item Weight | 34.5 Grams |
| Item dimensions L x W x H | 2.5 x 2 x 0.4 inches |
| Manufacturer | KJ-KayJI |
| Maximum Operating Voltage | 32 Volts |
| Measurement Type | Multimeter |
| Minimum Operating Voltage | 3.6 Volts |
| Model | J7-C |
| Power Source | Usb-a,usb-c |
| Specification Met | CE, RoHS |
| Style | Power Tester |
| Style Name | Power Tester |

## Product Details

- **Brand:** KJ-KayJI
- **Power Source:** Usb-a,usb-c
- **Style:** Power Tester
- **Color:** Black
- **Item Weight:** 34.5 Grams

## Images

![USB C Tester,KJ-KayJI 2 in 1 Tester Color Screen IPS Digital Multimeter(2024),Voltage,Cur,Pwr,Resistance,Elec,Temp,Capacity,Tme,Fast Charging,with USB Clip Cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2 - Image 1](https://m.media-amazon.com/images/I/61E+kuQxEvL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great!
*by L***N on December 26, 2024*

This is high tech. User friendly. Compact piece of technology at your fingertips and quality is still there. Excellent display screen for voltage ,amps, milliamps and is an excellent quality meter with accurate readings. some things can be programmed for your personal taste of how it should be set. Many different screens. How many amp hours it takes to charge your battery or how many amp hours are left on your battery. It's extremely easy answers to all your electronic questions by reading the instructions to acquire the answer you're looking for. Has different languages but I forgot exactly which ones my apologies. Excellent value for the money. I consider this a must-have item for anybody that's into electronic troubleshooting and observing electrical input, output etc. Beautiful color screen, easy to read, small font. Well laid out display screen. Amazing piece of technology that works when you wanted to with quality behind it. Thanks

### ⭐⭐⭐⭐⭐ Great little tester, with some quirks
*by G***O on March 6, 2020*

I use this for testing USB-C chargers, battery packs, and cables. I love that it gives you so much information - not just V and mA like the Satechi, but watts (which is the most important metric overall!) and also total charge (mAh) and total energy (mWh), elapsed time and more. I used it to know that my Pixel 2 XL wasn't getting 9V from the USB-C charger I was using; replacing that gave me much faster charges. The UI is a bit wonky; the "W" for watts is some kind of strange character, but you get used to it. To reset the charge time, total charge, and total energy, each one is a separate reset, so to reset all you have to double-click, then triple-click, then quad-click. The "input" and "output" USB-C ports are labeled backwards, and the "manual" (even the new one) is pretty hopeless. "Resistance" is a bit weird, it's just V/I as far as I can tell, a bit meaningless for this application. (It won't measure your resistors.) And I wish it had a display mode that showed watts in larger font. But on the good side, it's accurate, the display is clear, it has all the info you could want, I like that you can flip it upside down, and also it remembers your settings between uses which is great. And the multiple inputs & outputs are super useful. You can test pretty much anything USB-related with it. Although, it says it can test batteries: not really so much. It comes with alligator-clip cables which you can hook to a voltage source of 3V or more (i.e. not a AA or AAA battery) and it'll measure voltage, but not under load which is what a battery tester needs to do. That's not why I bought it though so I'm good with that. On the other hand, if you have a USB AA/AAA battery charger, you can hook this tester into that and measure the total charge sent to the batteries you're charging.

### ⭐⭐⭐⭐ Looks like a defective unit - UPDATE - Working unit!
*by Y***U on January 6, 2023*

I was very interested in this meter to verify power output of the numerous USB charging receptacles installed around my house, as well as fitness of the numerous USB charging cables. However, after reading the poor instruction sheet which has no diagnostic section I am going to have to return this unit. As picture shows, the unit displays voltage but no reading on amperage. Same across all charging ports tested. *** UPDATE *** Rack it up to my ignorance and also the quality of the product instructions, but the reason the image is showing 0.00 amps is because there is no load on the opposite side of the meter. When phone, tablet, laptop or other device is connected to the meter, it will register amperage, just fine. The product also has a nice feature of 180 degree rotation of the display. I would also mention that some individuals will find the display dimly lit. I had to use a magnifying glass or take a phone picture of the display to read some of the display modes. All in all, it is worth purchasing this meter, if you are curious about the fitness of your charging blocks, wall charging ports on A/C receptacles with USB chargering ports.

## Frequently Bought Together

- USB C Tester,KJ-KayJI 2 in 1 Tester Color Screen IPS Digital Multimeter(2024),Voltage,Cur,Pwr,Resistance,Elec,Temp,Capacity,Tme,Fast Charging,with USB Clip Cable Support PD2.0/PD3.0,QC2.0/QC3.0,BC1.2
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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-02*