Measures energy (Wh) charge (Ah) power (W) current (A) and voltage (V); Measures peak Amps peak Watts voltage minimum (sag) peak temperature; Measures temperature in both Celsius & Fahrenheit (optional temperature probe is necessary); Auxiliary battery to power watt meter for measurement down to 0V; Accurate & precise- 0.01A current and 0.01V voltage resolutions; Rugged- handles 50A continuous and 100A peak at 60V; Small & light with a tough plastic case; Precision Alu-Chrom current sensing resistor with only 0.001 Ohms resistance; Factory calibration stores constants in EEPROM to compensate for component tolerances; Specifications: Voltage: 0.60V (x 1); Current: 0~100A peak (x 2); Power: 0~6000W; Charge: 0~65Ah; Energy: 0~6554Wh; Temperature: 0'C~150'C / 32'F~302'F; Auxiliary power: 4.0~60V; Display: 26.5 x 28.5mm LCD