250A Power Analyzer. This logger can be used with most brushless esc's on the market to analyze the Battery condition, capacity, current draw, motor rpm(see note), and the run time of your boat in the water and on the bench. This will make the setup of your boat an easier task without having to guess. This has a maximum amp draw of 150 amps, Max 26 volts. Link for manual 60V 250A Power Analyzer User Manual (Eng) 20120331.pdf )
NOTE: This is fully compatible with the Etti 45a Navy, Etti 70a Navy, Etti 90a Navy, Etti Race 150, Etti Race 150 bec, HV 120A & HV220A. This can also be used with other esc's to log voltage, current, and other functions, but the rpm will not be logged.