10 1 USB Tester DC Digital Voltmeter Amperimetro Amp Volt Ammeter Detector Power Bank Charger Indicator DIY Electric Battery

Product descriptions from the supplier Real-Time Detection: Provides real-time status of voltage, current, power, and more for precise control. Wide Compatibility: Supports QC2.0, QC3.0, PD, and Samsung quick charge protocols for versatile use. High Precision: Equipped with professional instrument sampling circuits and unique precision algorithms. Power Off Storage: Stores data even when the device is powered off, enhancing convenience for battery testing. About this supplier