9 measurement functions It can be used to test battery voltage 0~200V, discharge current 100A, discharge power, discharge impedance, internal resistance, capacity, discharge energy, power consumption and operating time. HD LCD screen with blue backlightAll viewing angles display provides a better visual experience, full view 360 no blind spots and blue backlight make the result display clear day and night One-button adjustmentOnly with one button, you can adjust the full and cut-off voltage, choose current range, clear data, choose normal/dormant mode Screw-free installation design With the plug-in terminal installation design, it is easy and convenient to install and to remove the wires without the screws Wide application with high precision chip control, efficient and stable operation, the measurement accuracy reaches 1%, can be widely used in automobiles, solar systems, industrial assembly lines