This is a high-precision power meter, and its accuracy can even be used to calibrate a general multimeter. Usually used to measure the charge and discharge capacity of RC lipo batteries. The measurable data includes the accumulated capacity WH and AH during long-term charging and discharging, real-time current I, real-time power W, and real-time voltage U. AH and WH will not stop calculating due to power failure until you long press the reset button. It will return to zero. Working Voltage:8-150V resolution 0.001V. Test Current: -25A to 25A ,resolution 0.001A (50A in 3sec). Size:60mmx38mmx13.5mm Weight:30.9g Screen:LCD 1.5 inch Screen Refresh:3Hz precision:less than 0.2% Colour:grey Material:ABS Please Note That: 1. Working for a long time above 25A may affect accuracy. 2. Does not work below 8V. Unable to measure voltages below 8V. 3. Do not open the soldering wire, as the thickness of the solder will affect its accuracy. Because each of them has undergone separate calibration before leaving the factory. Please use the XT60 plug for wiring, 4. OLED screens may shatter upon impact, please handle with care. 5.The Analyzer can work in charger or discharge ircuit,screen will display ositive or negative current. 6. Press the rest button to switch the display interface. Long press to reset the capacity to zero. 7. The capacity of charging or discharging is independently accumulated, and if you use it for an electric motorcycle, you may be able to measure the amount of energy recovered Package Contents: 1 * Current Power Analyzer 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.