Features 1、[Versatile Use] This USB tester can measure various DC power sources and devices such as power adapters, charging cables, data cables, laptops, power banks, desk lamps and more. 2、[Comprehensive Measurements] This USB meter could measure voltage, current, capacity, energy, power, and temperature of various batteries accurately and efficiently. 3、[Advanced Features] Equipped with features like full charging shut off, timed power off, charging timer, USB data D+ D‑ fast charging protocol, voltage measurement display. Measurements can be displayed wirelessly on your Bluetooth enabled phone. 4、[Enhanced Performance] Designed with high speed fan and all aluminum heat sink, along with large package, high current high voltage field effect transistors, the overall performance is greatly improved. 5、[Wide Compatibility] Compatible with multiple fast charging protocols, supporting multiple protocols such as QC PD: 2.0 3.0 4.0MTK. Specification Item Type: USB Tester Material: ABS Model: UD18L Voltage Measurement Range: 3.600-32.00V Current Measurement Range: 0.000-5.100A Accumulated Capacity Range: 0-99999mAh Accumulated Power Range: 0-999.99Wh Power Measurement Range: 000.00-163.00 W Temperature Measurement Range: 0-80℃ Maximum Timing Time: 999 hours 59 minutes 59 seconds USB D+ Voltage Range: 0-2.99V USB D- Voltage Range: 0-2.99V Refresh Time: >500mS/time Measurement Rate: About 0.5 times/second Measurement Range of Color Screen Meter: Voltage Range: 3.60-32.0V Current Range: 0.00-5.10A Power Range: 0.00-150W Constant Current Load Measurement Range: Voltage Range: DC5-24.0V Current Range: 0.2-4.8A Power Range: 45W 65W High power Load Discharge Aging Test: 65W: Within 3 minutes in a short time 45W: Sustainable aging Package List 1 x USB Tester 1 x User Manual 1 x Storage Box