High-precision USB-C tester that gives reliable, instrument-class measurements for everyday troubleshooting, verifying fast-charging behavior and validating power sources. Key benefits Accurate, instrument-grade readings: measures voltage, current, power, capacity, energy, impedance, timing and temperature with the same accuracy as large professional instruments. Fast-charging diagnosis: automatically detects and reports PD2.0, PD3.0, QC2.0, QC3.0, DCP, AFC, FCP, SCP and APPLE 2.4A/2.1A/1A/0.5A protocols so you know which charging negotiation is in use. Clear real-time display: high-resolution color screen with 6 display modes lets you inspect charging status and trends at a glance. Broad compatibility: equipped with USB-A and Type-C interfaces and supporting a wide range of inputs (4.5V–36V, 0–5A), it works with most chargers, power banks, phones, tablets and USB devices. Multi-parameter insight: view power and energy over time, check cable or connector impedance, and monitor device temperature to find intermittent faults or thermal issues. Features and performance Measurements: voltage, current, power, capacity (mAh), energy (Wh), impedance, timing and temperature in one compact tool. Protocol support: automatic detection of PD2.0, PD3.0, QC2.0, QC3.0, DCP, AFC, FCP, SCP and APPLE 2.4A/2.1A/1A/0.5A. Display: high-resolution colour screen with 6 configurable interfaces for numeric readout, graphs and summary views. Interfaces and ranges: USB-A and Type-C ports; voltage range 4.5V–36V; current range 0–5A. Practical use scenarios Verify fast charger claims: plug the tester between a USB-C PD wall charger and a phone to confirm the charger negotiates the correct PD/QC/AFC/FCP/SCP profile and delivers the expected voltage and current. Validate power bank capacity and runtime: measure actual energy (Wh) and capacity (mAh) delivered to a device to compare against the manufacturer specifications. Diagnose charging problems: measure impedance, temperature and timing while testing cables, adapters and devices to identify high resistance connections, overheating or failed negotiation. Why this tool matters Saves time diagnosing charging issues and avoids guesswork when a device charges slowly or behaves inconsistently. Helps confirm product performance for purchase decisions, repairs or quality checks. Provides comprehensive, repeatable measurements for hobbyists, technicians and anyone who needs trustworthy USB power data. What it does not assume Uses the protocols and ranges listed above; no extra unsupported protocols are assumed. Provides instrument-level measurement accuracy as stated for the listed metrics and ranges. Technical snapshot Measured parameters: voltage, current, power, capacity, energy, impedance, timing, temperature Protocols detected: PD2.0, PD3.0, QC2.0, QC3.0, DCP, AFC, FCP, SCP, APPLE 2.4A/2.1A/1A/0.5A Interfaces: USB-A and Type-C Voltage range: 4.5V–36V Current range: 0–5A Display: high-resolution colour screen with 6 display modes Use this tester to obtain clear, measurable evidence of charging behavior and to make informed decisions about cables, chargers and power sources.