Our power meter can capture a range of basic data, including cumulative capacity in Wh (watt-hour) Ah (ampere-hour) over a long period of time, real-time current (I), real-time power (W) real-time voltage (U). This device is your precise tool f measuring the charge discharge capacity of RC lipo batteries. Screen: 1.5 inches, LCD Refresh rate: 3Hz Voltage range: 8-150V Withst current: 25A (instantaneous 50A, within 3 seconds) Accuracy: Less than 0.2 percent Interface: gold-plated XT60 Test resolution: 0.001V or 0.001A Note: 1. Long-term operation above 25A may affect the accuracy of the meter. 2. The device does not wk below 8V cannot measure voltages below this threshold. 3. To maintain the accuracy of the measurement, please avoid modifying the product. Each tester is facty calibrated f optimal perfmance. Please use the XT60 plug we provide f safe wiring. 4. The analyzer has both charging discharging functions, the screen displays positive negative current. 5. the reset button to switch the display interface long to reset, the capacity is zero. Colour:Black Material:ABS Package Contents: 1 x XT60 8-150V Power Meter Only the above package content, other products are not included. Note: Light reflection different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.