- Real-time voltage and current measurement for USB chargers, power adapters, and other charging devices. No professional wiring is required; once the interface is connected, the charging state voltage and current are shown in real time. - Precise current calibration function improves current accuracy for reliable measurements. - Fast charging identification with broad compatibility; identifies QC2.0, QC3.0, PD, and VOOC protocols. - Stores multiple sets of detection data for easy saving and comparison; the power-saving mode does not affect data transmission. - Use scenarios: - In a repair shop to quickly verify that a charger delivers the correct voltage and current under load. - At home or in the office to compare different chargers and determine which support fast charging protocols. - In the field to test USB-C PD, QC devices and ensure on-site compatibility with common fast-charging standards.