USB Charger Meter LCD Display Transparent Portable Current Voltage Charging Tester 3.5‑20V 0‑3.3A

Feature: 1. CURRENT TESTER: Real time detection of the state of charge, voltage, current, capacity, electricity, power, equivalent impedance, temperature and other indicators of electrical appliances at a glance. 2. FAST CHARGING: Supports QC2.0 fast charging protocol identification, allowing you to know the charging status of your phone anytime, anywhere. 3. WIDELY COMPATIBLE: Digital USB tester widely compatible with USB A port devices, such as cell phones, tablets, laptops, car chargers, power packs, wall chargers, cables, etc. 4. MORE ACCURATE MEASUREMENT: Voltage range DC 3.5‑20V+ 1percent , current range DC 0‑3.3A+ 1percent . Built in professional sampling circuit ensures the accuracy, precise and stability of the results. 5. DATA GUARANTEED: Easy to measure the output current and voltage of your USB power supply to help you know the charging status of your phone or tablet. Using time and capacity storage, you can also measure total capacity (mAh). Specification: Item Type: USB Tester Material: ABS Model: KWS V21 Voltage: DC 3.5 20V+ 1percent Current: DC 0 3.3A+ 1percent Capacity: 0 99999mAh Time: 0 99H. Package List: 1 x USB Tester