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Compact LCD USB multimeter with dual numeric display and reset button

LCD USB Multimeter Current Voltage Tester 99999mAh

SKU CH-Y4MD-R0RRC

Measures USB voltage, current and capacity up to 99999 mAh with a dual-display LCD

  • Featuresfalse
  • Sports Team1 Piece
  • TypeMultimeters, Tach & Dwell Meters
  • Real-time dual display shows current and voltage simultaneously
  • Precision measurement range covers voltage 3-9V and current 0-3A with ±1% accuracy
  • Capacity tracking up to 99999mAh for power bank testing
  • Persistent memory retains working time and capacity data during power loss
  • Universal compatibility tests power banks, solar chargers, car USB ports and devices

Real-Time Dual Display

This LCD USB multimeter shows current and voltage simultaneously while a charger or power bank is under test. It is built for technicians and hobbyists who need immediate visibility of both values without swapping leads or modes. The persistent memory keeps elapsed time and accumulated capacity even if the supply is interrupted. A long press of the reset button clears all recorded data in one action.

0–3 A / 3–9 V Measurement Range

The single specification that decides suitability is the measurement window: voltage from 3 to 9 volts with ±1 % accuracy and current from 0 to 3 amps with ±1 % accuracy. Any source that operates outside this window — higher-voltage USB-PD profiles, high-current fast chargers or low-voltage circuits — cannot be tested reliably with this unit.

99999 mAh Capacity Counter

The integrated counter accumulates up to 99999 mAh and logs run-time up to 99 hours, covering most phone, tablet and portable power-bank tests. Tests that exceed either limit will stop recording, so very large stationary packs or multi-day endurance runs need external logging. The tester draws its operating power from the port under test, so no separate supply is required.

Highlights

  • Real-time dual display shows current and voltage simultaneously
  • Precision measurement range covers voltage 3-9V and current 0-3A with ±1% accuracy
  • Capacity tracking up to 99999mAh for power bank testing
  • Persistent memory retains working time and capacity data during power loss
  • Universal compatibility tests power banks, solar chargers, car USB ports and devices

Specifications

BrandhiBCTR
Featuresfalse
Sports Team1 Piece
TypeMultimeters, Tach & Dwell Meters

Questions about this item

What does the 99999mAh capacity reading actually tell me when I test a power bank?

It shows the total milliampere-hours delivered during the charge cycle, up to 99999mAh, so you can verify the real capacity of the power bank under load.

The USB interface limits the measurable current to 3A — what charging standards does that cover in practice?

It covers standard 5V USB charging up to 3A, including common phone and tablet rates, but will not measure higher-voltage Quick Charge or USB Power Delivery profiles above the 3A limit.

What physical space does the tester need between the charger and the device?

The inline dongle adds only a short USB-A plug and socket, so it fits in tight ports on power banks, car sockets or laptop hubs without blocking adjacent connectors.

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