Description: * How often do you guess your electric set ups? Manufacturers specifications for motors etc are good starting points, but without accurate measurements you can never be sure you are getting the best out of your combination and in many cases you could be damaging your components. Is your ESC of the correct rating? Is there sufficient voltage when under load? Is that prop too big/small? These, and many other questions can be easily answered by using this great device. Simply plug in between your motor and battery and the GT watt meter displays the actual values used when running for voltage (V), power (W) current (A) and charge quantity (mAh). Get your electric power systems running at their peak and enjoy your hobby to the full with a watt meter! Features: * Prevents peak currents damaging battery, ESC, motors, wiring and connectors . * Verifies sufficient operating voltage under load . * Individual cell balancing . * Set cutoff voltages, check battery capacity & health . * Confirms proper battery charger operation (connect between your battery and charger) . * Detect receivers and actual operating current so as to make sure whether an UBEC is needed. Package contents: * 1x G.T. Power RC Watt Meter and Power Analyzer - 130 Amps