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Rectangular USB power meter with colour LCD screen and OTG adapter attached

Aomoproing

Aomoproing USB Power Meter Tester with OTG Adapter

SKU CH-9EFJ-XP7D9

Measures voltage, current, power, capacity, temperature and time on USB-A, USB-C and Micro-USB ports, includes OTG adapter and safety alarms

  • Product typeAC Current Line Splitters
  • Measures voltage, current, power and capacity to verify charging performance
  • Supports QC 3.0, QC 2.0 and BC 1.2 for broad fast-charge compatibility
  • Over-voltage, over-current and under-voltage protection with audible alarm safeguards connected devices
  • IPS HD 9-colour LCD shows real-time data and stores readings after sudden power loss
  • Includes OTG adapter adding Micro-USB input for wider device coverage

USB Power Meter Tester

The Aomoproing USB Power Meter Tester measures voltage, current, power capacity, temperature and working time on USB-A, USB-C and Micro-USB ports. It supports QC 3.0, QC 2.0 and BC 1.2 fast-charge protocols and includes an OTG adapter for expanded connectivity. The built-in safety suite provides over-voltage, over-current, under-voltage and low-energy protection with an audible alarm and automatic output cut-off. Data is retained during sudden power loss.

Thermals Noise and Power Draw

The tester itself draws minimal power from the bus while monitoring live charging parameters. Its IPS HD colour LCD remains readable without generating noticeable heat or fan noise because the unit has no active cooling. Over-current and over-voltage safeguards trigger instantly to protect connected devices during normal operation.

Sustained Load Behaviour

Under continuous high-current charging the protection circuits maintain safe limits by cutting output and sounding the alarm when thresholds are exceeded. The display cycles through multiple interfaces to show real-time capacity accumulation and temperature trends over long sessions. Automatic data save ensures test records survive unexpected interruptions.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 81% of the 3,030 comparable items (median $54.99).

Specifications

Product
Product typeAC Current Line Splitters

Questions about this item

How do I install the Aomoproing USB Power Meter Tester with OTG Adapter, and what step do people often get wrong?

Connect the tester between your power source and device using the matching USB-A, USB-C or Micro-USB ports; the common mistake is forgetting that data transfer has limitations, so use a direct cable if you need full data throughput.

What maintenance or replacement will this tester need later?

No routine maintenance is required; the unit has no user-replaceable battery or calibration schedule, so keep the connectors clean and store it dry to preserve the LCD and protection circuits.

What limit appears first during sustained high-current testing?

The over-current protection triggers first, cutting output automatically and sounding an alarm to protect the connected device while saving accumulated data.

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