200A high precision power analyzer designed to measure voltage, current, power, discharge capacity, and discharge time for aircraft systems, including multi-axis aircraft performance evaluation. Current range: 0-200A, continuous current rating 50A, resolution 0.01A. Operating voltage: 4.8-60V (a separate 12V power supply is required when test voltage is below 5V), voltage resolution 0.01V. Energy measurement range: 0-6554Wh, resolution 0.01Wh. Battery capacity can be determined by current readings, discharge time via continuous current, and battery internal characteristics through maximum instantaneous current for circuit protection. This watt meter power analyzer helps verify adequate operating voltage under load and prevents excessive currents from damaging batteries, motor controllers, motors, and wiring. It can be used to check battery charger functionality by connecting your battery and charger directly. Users can set cut-off voltage thresholds and evaluate battery capacity. It also detects receiver operation and actual working current to assess components such as UBECs. The device features a backlit LCD screen for clear visibility in various lighting conditions, including direct sunlight. Equipped with plug-in auxiliary battery support and a ventilation hole design for effective heat dissipation. Constructed with high-quality tin-copper core materials for strong load capacity and low resistance. Color: black Material: plastic Package Contents: 1 x detection unit Note: The package includes only the items listed above. Light reflection and display differences may cause slight color variations between the image and the actual product. Measurement error allowance: +/- 1-3cm.