Features: The BM550 automotive battery tester provides accurate readings of voltage, current, and resistance, allowing users to fully understand the battery's conditions. Equipped with a digital display screen, this battery tester shows battery data in a clear and intuitives manner, eliminating guesswork and making operation simple and convenient. This product is designed for automotive maintenance professionals, including repair shops and service stations, as well as car enthusiasts interested in battery testing and troubleshooting. In addition to basic battery testing, this tester also supports fault detection, capacity evaluation, and charging statusjudgment, meeting diverses user requirements. Regular use of this battery tester allows users to monitors the health of their vehicle's battery, ensuring its normal operation. When facing starting difficulties or abnormal battery discharge, this product helps users quickly identify the problem and take appropriate measures for repair. Specifications: Material:PVC Industrial Material Size:Approx.2.74x0.89x4.88Inch Color:Black Voltage measurement accuracy: 6-24V Weight: 1Kg Number:BM550 Screen Size:1.8 Inch HighDefinition Backlit Screen Test Range:6V/12V/24V Connection Method:Positive And Negative Alligators Clips Operating Voltage:4.9V-32V Operating Temperature: -20℃~50°C Package Includes: 1x Battery Tester note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.