Feature:1. LCD DISPLAY: The battery capacity tester features an LCD screen that shows necessary information such as load input voltage, input current, input power, discharge time, discharge capacity (mAh), and product temperature.2. COMPREHENSIVE PROTECTION MECHANISMS: This tester is equipped with various protection features, including under voltage protection, over voltage protection, over current protection, over power protection, and over temperature protection.3. EASY CURRENT ADJUSTMENT: The current adjustment utilizes a long handle potentiometer that can be easily rotated by hand, eliminating the need for additional tools like a screwdriver.4. VOLTAGE AND CURRENT CALIBRATION: Battery tester comes with voltage and current calibration functions, ensuring accurate measurements and allowing parameter storage even when powered off.5. WIDE RANGE OF APPLICATIONS: This tester can be used for aging or functional testing of various power sources (product power supplies, chargers, power banks, etc.) and testing the capacity discharge of different batteries, making it suitable for desktop and small load testing.Specification:Item Type: Battery Capacity MeterMaterial: PCBLoad Power Supply Voltage: DC5.0V (with reverse connection protection)Load Power Supply Current: <=200mALoad Input Voltage: DC1.5V-25V (with reverse connection protection)Load Input Current: 0A-4.00AVoltage Accuracy: (1%+1 digit), can be calibratedCurrent Accuracy: (1%+1 digit), can be calibratedHeat Dissipation: Intelligent temperature-controlled fan + all-aluminum heat sinkFan Speed: 6000rpmOperating Environment Temperature: -15 to 50Undervoltage Protection LVP Threshold: Default 1.5V (adjustable between 1.5V-24.5V)Overvoltage Protection OVP Threshold: Default 25.0V (adjustable between 1.5V-25.0V)Overcurrent Protection OCP Threshold: Default 4.1A (adjustable between 1.0A-4.1A)Overpower Protection OPP Threshold: Default 25.5W (adjustable between 1.0W-25.5W)Overtemperature Protection OTP Threshold: Default 80 (adjustable between 40 -80).Package List:1 x Module4 x Stand