Feature: 1. MEASUREMENT OBJECT: Power meters can measure a range of basic data, including cumulative capacity in Wh (watt hours) and Ah (ampere hours) over long periods of time, real time current (I), real time power (W), and real time voltage (U) 2. CLEAR SCREEN: The RC watt meter has a 1.5in LCD screen display that gives clear readings, even in the dark and sunlight, provide real time reading 3. WIDE APPLICATION: This RC battery tester can test solar power, batteries and chargers. Measuring the operating voltage to keep the battery, motor, wiring, connector working well 4. TECHNICAL PARAMETERS: With dimension of 60mmx38mmx13.5mm(excluding wires), high accuracy RC Watt meter features a gold plated XT90 interface and 10AWG silicone wire. Can withstand currents of ±50A (100A for 3 seconds), with voltage accuracy of ≈0.2% and current accuracy of ≈0.5% 5. HIGH REFRESH RATE: The RC watt meter power analyzer has a refresh rate of 3Hz, providing accurate and up to date measurements for your testing needs Specification: Item Type: RC Watt Meter Screen: 1.5in LCD Refresh Rate: 3Hz Voltage Range: 8-150V Maximum Current: ±50A (instantaneous 100A, within 3 seconds) Voltage Accuracy: ≈ 0.2% Current Accuracy: ≈ 0.5% Interface: Gold plated XT90 Silicone Wire: 10AWG. Package List: 1 x RC Watt Meter 1 x Shell Accessory