- Bright LED Display : Easily read voltage levels in any lighting condition with the clear LED screen. The display provides accurate measurements with a 1V resolution, ensuring precise diagnostics. - Fast Voltage Testing : Quickly assess car battery voltages and troubleshoot electrical issues across a wide range of 3V to 48V. This tool also serves as an alternator tester, making it ideal for cars, trucks, SUVs, and marine vehicles. - Comfortable and Durable Design : Featuring an ergonomically designed handle and robust ABS construction, this test light is comfortable to hold for extended periods and built to withstand frequent use in automotive repair settings. - Versatile Applications : Perfect for diagnosing battery health for everyday vehicles, checking alternator performance for trucks, or troubleshooting electrical systems in boats. Whether you are a professional mechanic or a DIY enthusiast, this tester meets your needs. - Compatibility : Suitable for a wide variety of vehicles, including cars, trucks, SUVs, and marine applications, ensuring versatility for various testing scenarios. - Compact and Portable : The lightweight design makes it easy to carry and store, so you can rely on it for quick checks anytime and anywhere. This automotive test light is an essential tool for anyone needing reliable voltage readings and efficient troubleshooting solutions.