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Small USB tester with colour LED display showing red current and blue voltage

diymore USB Tester 3.0V-7.5V 0-2.5A LED Display

SKU CH-CVFY-GPM17

Measures USB voltage from 3.0V to 7.5V and current up to 2.5A with a colour LED display

  • Team affiliation1 Piece
  • Key featuresMULTIMETER, Battery Powered, false
  • Measures voltage from 3.0V to 7.5V for accurate USB power checks
  • Measures current up to 2.5A to verify charger output
  • Colour display shows voltage in blue and current in red for quick reading
  • New-generation converter IC with precision reference delivers stable, high-precision readings
  • Compact, bus-powered design plugs directly into USB ports for portable testing

Purpose and Audience

The diymore USB Tester measures voltage from 3.0V to 7.5V and current up to 2.5A on a USB Type-C interface. It suits technicians and hobbyists who need a quick check of charger output or cable performance.

What the Display Changes

A colour LED screen shows current in red and voltage in blue with large digits for clear reading. The integrated converter IC and precision reference deliver stable, high-precision readings with strong anti-interference behaviour.

Limits of the USB Interface

The tester only covers the 3.0V to 7.5V and 0 to 2.5A range, so it cannot measure higher-voltage USB Power Delivery profiles or currents above 2.5A. It draws no external power and simply plugs in line for immediate use.

How it compares

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

Price $18.99
Cheaper than about 83% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameDiymore
More details
Team affiliation1 Piece

Questions about this item

Will the USB-A plug or the LED display need replacement after extended use?

The unit has no internal battery and draws power from the USB port under test, so there is no cell to wear out; the USB-A connector and LED segments are solid-state with no user-serviceable parts.

What measurement limit will be reached first during continuous high-current charging?

The tester stops reading at 2.5 A, so any charger or cable delivering more than that will hit the current ceiling before the 7.5 V voltage limit.

Does the tester itself generate noticeable heat or draw extra power when left plugged in all day?

It consumes only the tiny current needed to drive the display, adding negligible load and producing no perceptible warmth during extended sessions.

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