The TURNIGY watt meter is a very accurate R/C amp/watt meter.

• Predict model airplane flight time with any given propeller.
• Ensure peak currents are safe for motor, ESC, wiring and connectors
• Check battery health and performance.
• Evaluate R/C battery charging efficiency.
• Choose the best propeller or gearing and the most efficient motor
• Check for wiring and connector power losses
• Measure power and energy consumption of ANY device with a battery