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Compact USB-C tester with 1.77-inch TFT display and pass-through connectors

diymore USB-C Tester 1.77" 4-25V 6.5A QC/PD

SKU CH-E12H-G716V

Measures USB-C voltage, current and power from 4 to 25 V up to 6.5 A with a 1.77-inch display and QC/PD protocol support

  • Overall height10 L x 6.5 W x 1.5 H centimeters
  • Overall width10 L x 6.5 W x 1.5 H centimeters
  • Overall length10 L x 6.5 W x 1.5 H centimeters
  • Clear 1.77" TFT screen shows live voltage, current and power data
  • Supports QC and PD fast-charge protocols for broad device compatibility
  • Measures 4-25 V and up to 6.5 A with ±0.1 V / 0.01 A precision
  • Seven selectable display modes let you view the parameters you need
  • Built-in wire-resistance check via pressure-difference method assesses cable quality

diymore USB-C Tester 1.77" Display

The diymore USB-C Tester is a compact electrical system tool designed for DIY enthusiasts and technicians who need to verify USB-C power delivery. It connects inline between a power source and a device to provide real-time monitoring of charging parameters. The 1.77-inch TFT screen presents voltage, current, power, and protocol data clearly for immediate diagnostics.

Measurement Range 4-25V 6.5A Accuracy

The single specification that determines suitability is the measurement envelope: DC 4-25V voltage range and up to 6.5A current capacity with ±0.1V and 0.01A accuracy. This covers standard USB Power Delivery and Quick Charge profiles. Buyers who need to measure higher voltages or currents beyond this envelope cannot use this tester.

Seven Display Modes Wire Resistance Check

The bundled functionality includes seven selectable display interfaces that cycle through different charging statistics and a wire internal resistance measurement using the pressure difference method. This allows users to assess cable quality and charging efficiency without separate equipment. The unit operates as a pass-through tester, so monitoring does not interrupt the charging session.

How it compares

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

Price $21.99
Cheaper than about 73% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameDiymore
Size & build
Overall height10 L x 6.5 W x 1.5 H centimeters
Overall width10 L x 6.5 W x 1.5 H centimeters
Overall length10 L x 6.5 W x 1.5 H centimeters

Questions about this item

What does the 6.5A current rating mean when testing a charger in use?

The tester measures up to 6.5 amperes passing through it, so you can verify whether a charger delivers its rated output under load without exceeding the meter's limit.

Which charging protocols does the USB-C port actually negotiate?

The unit negotiates QC 2.0, QC 3.0 and PD protocols, letting you confirm that a power source switches to the correct voltage and current profile for the connected device.

How much clearance does the 1.77-inch display need in a tight enclosure?

The housing measures 10 by 6.5 by 1.5 centimetres, so allow at least that footprint plus cable bend radius behind the inline USB-C connectors.

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