[Car Battery Tester] BM550 can test all 6V/12V/24V 100-2000CCA batteries including regular flooded, flat plate, spiral, and gel batteries. Provides overall analysis of battery health and helps you determine its status before failure. Test results are based on industry standards. [Display Extensive Battery Data] Battery analyzer uses the latest conductivity method to measure and scan the battery, delivering accurate test results. Includes internal resistance test, voltage test, state of health (SOH), state of charge (SOC), and value test. [Fast and Over 99.6% Accuracy] Built-in intelligent microprocessor enables fast and accurate testing. Results are displayed within two seconds. [Plug and Play] BM550 battery load analyzer allows testing both in-vehicle and out-of-vehicle, including dead batteries. Simply connect the tester's clips to the battery terminals to power on and begin testing. Easy to use. [Safety and Protection] Designed with reverse polarity protection. If the positive and negative poles are reversed, the device will not be damaged, nor will it affect the vehicle or battery. Color: As shown Material: Plastic + Metal Package Contents: 1 x Battery Detector Only the above package content; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement error allowance is +/- 1-3 cm.