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Compact rectangular USB tester with LCD screen and USB-A and USB-C ports

Variable Backlight USB Tester LCD Display USB C & A Multi Meter 2.0

SKU CH-Y4J7-16E1G

Measures voltage, current, power, capacity, energy, resistance and time on USB-A and USB-C ports with a colour-changing LCD backlight

  • FeaturesUSB Tester, Corded Electric, false
  • Sports Team1 Piece
  • Adjustable backlight LCD shows 7 parameters at once
  • USB-A and USB-C ports support fast-charge protocols and data
  • One-button switching between three display modes
  • Built-in battery capacity, energy and internal-resistance testing
  • Multi-colour backlight signals charging status instantly

USB Tester for Multi-Device Charging

This USB tester monitors voltage, current, power, capacity, energy, time and internal resistance across USB-A and USB-C ports. It suits technicians, hobbyists and anyone who wants to verify charger output or battery health on laptops, tablets, phones and power banks. The single-button interface cycles through three display modes for quick parameter checks.

Compatibility Check Before Use

Confirm your charger and cable support the required fast-charge protocols such as PD or QC to enable full measurement ranges. Devices without PD support may need the manual 5 V trigger by holding the button for over five seconds. Ensure the tester’s USB 2.0 data rating matches your data-transfer needs.

Sustained Load Behaviour

The adjustable backlight shifts from blue to orange during high-speed charging and turns green when the battery reaches full charge, giving an instant visual cue of load state. Continuous monitoring of internal resistance and capacity reveals how a battery degrades over a full charge cycle rather than in a brief spot check.

Highlights

  • Adjustable backlight LCD shows 7 parameters at once
  • USB-A and USB-C ports support fast-charge protocols and data
  • One-button switching between three display modes
  • Built-in battery capacity, energy and internal-resistance testing
  • Multi-colour backlight signals charging status instantly

Specifications

BrandDROK
FeaturesUSB Tester, Corded Electric, false
Sports Team1 Piece

Questions about this item

What comes in the box and do I need any extra cables to start testing?

The package includes the USB tester unit itself. It has built-in USB-A and USB-C connectors for both input and output, so no separate cables are required to begin measuring voltage, current, power, capacity, energy, time or internal resistance.

Which display mode should I choose to see battery capacity in mAh versus energy in mWh?

Press the single set button to cycle through three modes: VAT shows voltage, current, resistance and time; VAWmAh shows voltage, current, power and capacity in mAh; VAWmWh shows voltage, current, power and energy in mWh. Select the mode that matches the reading you need.

What does the 2.0 rating mean for data transfer when I plug a drive into the tester?

Both USB-A and USB-C output ports support USB 2.0 data communication, so any drive connected through the tester will operate at USB 2.0 speeds while the meter simultaneously monitors charging parameters.

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