10-in-1 USB Digital Tester Voltmeter Ammeter for Power Bank & Charger

10-in-1 USB Digital Tester — Voltmeter, Ammeter & Power Bank Analyzer

This 10-in-1 USB digital tester is an all-in-one inline measurement tool for USB power circuits. Plug it between any USB source and load to instantly measure voltage, current, power, capacity, energy, time, temperature, and more — essential for testing power banks, chargers, cables, and USB-powered devices.

Key Specifications

Parameter	Value
Voltage Range	4V – 20V DC
Current Range	0 – 3A
Power Range	0 – 60W
Capacity Range	0 – 99999mAh
Energy Range	0 – 9999Wh
Voltage Accuracy	±1% ±2 digits
Current Accuracy	±1% ²2 digits
Temperature	0°C – 80°C (ambient)
Display	OLED / LCD multi-parameter
Interface	USB-A input + USB-A output (pass-through)

10 Measurement Functions

1. Voltage (V)
2. Current (A)
3. Power (W)
4. Capacity (mAh)
5. Energy (Wh)
6. Charging time (h:m:s)
7. Ambient temperature (°C/°F)
8. USB D+/D− voltage (charging protocol detection)
9. Cable resistance (Ω)
10. Charge cycle count

Why Choose This USB Tester?

• 10 Parameters in One — Replaces multiple meters for USB power analysis
• Pass-Through Design — Inline measurement without interrupting charging
• Protocol Detection — Identifies QC2.0/QC3.0/Apple/Samsung charging modes via D+/D− voltage
• Capacity Accumulation — Tracks total mAh delivered to verify power bank capacity claims
• Compact & Portable — Pocket-sized for field testing and lab use

Typical Applications

• Power bank capacity verification (actual vs. rated mAh)
• USB charger output quality testing
• USB cable resistance and voltage drop measurement
• Fast charging protocol identification (QC, PD, Apple)
• Arduino/Raspberry Pi USB power supply monitoring
• Battery-powered device current consumption profiling

FAQ

Q: Can this tester measure USB-C power?
A: This model uses USB-A connectors. For USB-C PD testing, use a USB-C variant tester.

Q: Does it work with Quick Charge 3.0?
A: Yes — it passes through QC3.0 voltage negotiation and displays the negotiated voltage on D+/D− channels.

Package Contents

• 1× 10-in-1 USB Digital Tester

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