Feature: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 TesterMaterial: ABSModel: UD18LVoltage Measurement Range: 3.600-32.00VCurrent Measurement Range: 0.000-5.100AAccumulated Capacity Range: 0-99999mAhAccumulated Power Range: 0-999.99WhPower Measurement Range: 000.00-163.00 WTemperature Measurement Range: 0-80Maximum Timing Time: 999 hours 59 minutes 59 secondsUSB D+ Voltage Range: 0-2.99VUSB D- Voltage Range: 0-2.99VRefresh Time: >500mS/timeMeasurement Rate: About 0.5 times/secondMeasurement Range of Color Screen Meter:Voltage Range: 3.60-32.0VCurrent Range: 0.00-5.10APower Range: 0.00-150WConstant Current Load Measurement Range:Voltage Range: DC5-24.0VCurrent Range: 0.2-4.8APower Range: 45W 65W High powerLoad Discharge Aging Test:65W: Within 3 minutes in a short time45W: Sustainable aging.Package List:1 x USB Tester1 x User Manual1 x Storage Box