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Compact rectangular USB-C multimeter with IPS colour screen and clip cable

KJ-KayJI USB C Tester 2-in-1 IPS Multimeter (2024) electrical system tool

SKU CH-YFAD-DKBJA

A compact IPS colour multimeter measures voltage, current, power, resistance, capacity, temperature and charging time on USB-C and USB-A cables and chargers, supporting PD 2.0, PD 3.0, QC 2.0.

  • Key featuresCorded Electric, false
  • Overall height8.2 L x 6.2 W x 1 H centimeters
  • Overall width8.2 L x 6.2 W x 1 H centimeters
  • Overall length8.2 L x 6.2 W x 1 H centimeters
  • Product weight34.5 g
  • Product typeMultimeters, Tach & Dwell Meters
  • Monitors voltage, current, power, resistance, capacity, temperature and charging time
  • 9 IPS colour display interfaces with 180-degree screen rotation on one view
  • Tests power bank and phone capacity using mAh and Wh clearing functions
  • Supports PD2.0, PD3.0, QC2.0, QC3.0 and BC1.2 fast-charging protocols
  • Compact 8.2 x 6.2 x 1 cm size weighing 34.5 grams

USB-C multimeter for cable and charger testing

This 2024 KJ-KayJI tester monitors voltage, current, power, resistance, capacity, temperature and charging time on Micro-USB, USB-A and USB-C connections. It verifies fast-charging support for PD2.0, PD3.0, QC2.0, QC3.0 and BC1.2 protocols. The device includes a USB clip cable and requires an OTG or Micro-USB input to trigger PD charging on USB-C ports. It is not for users who need wireless protocol analysis or automated logging beyond the onboard groups.

IPS colour screen with 180-degree rotation

Nine selectable display interfaces show live electrical data on a clear IPS panel. One interface supports 180-degree screen flipping for flexible viewing angles. The unit weighs 34.5 grams and measures 8.2 by 6.2 by 1 centimetres. It draws power from the circuit under test, so no separate supply is needed. It is not for technicians who require a bench-top form factor or isolated measurement channels.

Power-bank and phone capacity verification

A dedicated method measures real-world milliampere-hours: discharge a full power bank through a load and read the capacity value, then multiply by 90%. For phones, clear watt-hour data, drain the battery and divide watt-hours by 3.75, then multiply by 1000 and 90% to estimate cell capacity. The tester stores results in selectable groups. It is not for engineers who need calibrated laboratory-grade coulomb counting or temperature-compensated cycling.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 971 items is $30.99.

Specifications

Product
Brand nameKJ-KayJI
Product typeMultimeters, Tach & Dwell Meters
Size & build
Overall height8.2 L x 6.2 W x 1 H centimeters
Overall width8.2 L x 6.2 W x 1 H centimeters
Overall length8.2 L x 6.2 W x 1 H centimeters
Product weight34.5 g

Questions about this item

How do I connect the tester to a USB-C device so that the PD charging function activates?

Insert the tester into the USB-C device and cable, then plug an OTG adapter or Micro-USB cable into the tester's Micro-USB INPUT port to trigger the PD charging function.

What periodic action keeps the capacity and energy readings accurate for a power bank or phone?

Double-click the button to clear mAh before a full charge, then triple-click to clear Wh before discharging; multiply the shown capacity by 90 percent to estimate the true cell capacity.

At what screen angle does the display stop rotating automatically?

Only the Screen rotation interface supports a 180-degree flip; other interfaces do not rotate the display.

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