- The KINGBOLEN BM550 PLUS battery tester is a professional tool for diagnosing the condition of 6V, 12V, and 24V batteries in cars, motorcycles, SUVs, and trucks - Compatible with batteries from 2Ah to 220Ah and 100-2000 CCA, including AGM, GEL, EFB, and conventional batteries - Analyzes the state of health (SOH) and state of charge (SOC), internal resistance, and battery voltage - Features a 1.8-inch color LED screen to display clear and detailed results - Monitors the voltage waveform in real time, allowing you to identify defective batteries - Reverse connection protection to prevent damage to the device and the battery - Easy to use: just connect and start the test, no external batteries required - Fast and accurate results, suitable for professional and home use - Ideal for workshops, garages, battery manufacturers, and DIY enthusiasts