This USB tester is a compact voltmeter, ammeter and Type-C quick charge detector with capacity and ripple measurement. It helps you verify charging performance, diagnose issues and compare accessories. - Clear 2.0 inch LCD high-definition display for easy reading of voltage, current, power, capacity and ripple data. - 5P high-current input and 24P full-pin input/output interface for secure connections and reliable charging detection. - Measures and displays capacity and ripple in addition to basic voltage and current for a fuller picture of performance. - Type-C quick charge detection to identify PD/QC and other fast-charge protocols automatically. - High display resolution and measurement accuracy ensure reliable data for troubleshooting and testing. - Compatible with USB-C devices, chargers and power banks, suitable for testing cables and adapters. Practical use scenarios - Check a USB-C PD or QC charger: verify real-time output under load and confirm protocol negotiation. - Test charging cables and adapters: monitor current, ripple and capacity to assess quality and performance. - Evaluate battery packs and power banks: track capacity, efficiency and ripple over time to estimate health and remaining life. This tool is ideal for technicians, engineers and power users who need precise, real-time charging data in a portable, easy-to-read package.