WL-243 WELLHISE KEY-888 BATTERY TESTER is an instrument used to test and evaluate the condition of various types of batteries. The KEY-888 model is designed for testing batteries commonly used in automotive, marine and industrial applications. This instrument is used to measure the voltage level, capacity, resistance and general condition of the battery. It is usually equipped with a large LCD display and easy-to-use buttons, allowing users to quickly and easily view battery test results. The WL-243 WELLHISE KEY-888 Battery Tester has a durable construction and is suitable for long-term use. It can be used by both professional automotive technicians and amateur users.