Power Analyzer - G.T.Power RC Power Analyzer Watt Meter for voltage (V), current (A) Power (V) Capacity (Ah), and energy measurement 130Amps Operates from 4.8V to 60V - 0V with optional auxiliary battery 0V with optional additional battery. Measures 0 to 65Ah with a resolution of 0.001Ah. Measures 0 to 130A with a resolution of 0.01 A. 16 x 2 backlit LCD display. Measures 0 to 60V with a resolution of 0.01 V Measures 0 to 6554W with a resolution of 0.01 W