Switch between a five or six-digit display with a single button, boasting a maximum resolution of 0.00001 for real-time monitoring of subtle voltage, current, and power changes during charging. Features a USB3.0 interface, a 9-pin design backward compatible with USB2.0, offering + times the transfer speed of USB2.0. No need for a main data cable; it can also directly test the charging protocol of certain mobile phones. Its compact size makes it easily portable for use anywhere or sharing with friends. The device can store 10 sets of measurement data, allowing you to calculate battery capacity using the data obtained. The calculation formula is directly integrated, multiplying the result by 1000 to determine battery capacity. Supports reading data from E-Marker and DASH cables, easily accessing chips from these cables upon connection. The screen flip function, enabled by gravity induction, allows for free screen rotation or manual flipping by long-pressing the center button to disable gravity direction identification. Utilizes a differential pressure method for measuring cable resistance, working with a constant current load for easy detection. Voltage Monitoring: 4 ~ 24 V Voltage Monitoring Resolution: 0.00001 V Voltage Monitoring Accuracy: ±(0.2%+2) Current Monitoring: 0 ~ 6.5 A Current Monitoring Resolution: 0.00001 A Current Monitoring Accuracy: ± (0.5% + 2) Power Monitoring: 0~156 W Power Monitoring Resolution: 0.00001 W Power Monitoring Accuracy: ± (0.5% + 2) International Equivalent Load Resistance: 0~9999.9Ω International Load Equivalent Resistance Resolution: 0.0001 Ω Accuracy for International Equivalent Load Resistance: ±(0.5%+2) Capacity: 0~9999.99Ah Energy Consumption: 0~9999.99Wh Cable Resistance: 0~9999.99ohm D+/D- Voltage: 0~3.3V D+/D- Voltage Resolution: 0.001V D+/D- Voltage Accuracy: ±(1.0%+2) Equipment Temperature: ℃/℉ Color: Black Material: Plastic Type: Without Bluetooth Package Contents: 1 x USB Capacity Voltage Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The permissible measurement error is +/- 1-3 cm.