Our power meter can capture a range of basic data, including cumulative capacity in Wh (watt-hour) and Ah (ampere-hour) over a long period of time, real-time current (I), real-time power (W) and real-time voltage (U). This device is your precise tool for measuring the charge and discharge capacity of RC lipo batteries. Screen: 1.5 inches, LCD Refresh rate: 3Hz Voltage range: 8-150V Withstand current: ±25A (instantaneous 50A, within 3 seconds) Accuracy: Less than 0.2% Interface: gold-plated Test resolution: 0.001V/0.001A Note: 1. Long-term operation above 25A may affect the accuracy of the meter. 2. The device does not work below 8V and cannot measure voltages below this threshold. 3. To maintain the accuracy of the measurement, please avoid modifying the product. Each tester is factory calibrated for optimal performance. Please use the plug we provide for safe wiring. 4. The analyzer has both charging and discharging functions, and the screen displays positive or negative current. 5. the reset button to switch the display interface; long to reset, the capacity is zero. Colour:Black Material:ABS On the back of the product, the printed words vary from batch to batch Package Contents: 2 x 8-150V Power Meter 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.