Andoer FT08 RC 150A Hight Precision Watt Meter and Power Analyzer w/ Backlight LCD Operates voltage: 4.8V-60V. OV with optional auxiliary battery. Measures:0-150A, resolution 0.01A; 0-60V, resolution 0.01v; 0-6554W, resolution 0.1w; 0-65Ah,resolution 0.001An; 0-6441Wh,resolution 0.1Wh; Backlit LCD display.