12V Car Battery Tester and Alternator Tester 12 Volt Automotive Battery Analyzer, Charging System Checker with LED Indicator for Cars, Trucks

Key Features & Quality: Quick Pre-Charge Check: Verify if your battery is safe to charge in seconds. Alternator Test: Rev engine to 2000 RPM with green light on to confirm charging circuit health. Durable Build: Features 0.06mm² copper wires for reliable conductivity and a sturdy housing (approx. 12.4 x 5 x 1.8 cm). 25cm Cable: Provides ample reach for easy connection. 12V Battery Tester provides instant, visual diagnostics for your car, SUV, motorcycle, or light truck. With 6 clear LED indicators, it delivers precise voltage readings to assess battery charge level, alternator performance, and cranking health—all in one compact, plug-and-play device. Display 1: All Led lights off Testing results : none Charging Voltage, Dead Battery，changing battery immediately Display 2:”ON” led twinkling, other LEDs off; Testing results:4.1-11.1V Charging Voltage, Engine being hardly turned on, turn off all electrical equipment and charge battery immediately Display 3: ”ON” Led ON,”LOW” Led twinkling; Testing results:11.1-11.5V Charging Voltage, Low charged Battery, being charged immediately Display 4:”Low” led on, ”Middle” led twinkling; Testing results: 11.6-12V Charging Voltage, Middle charged Battery, better being charged sooner Display 5: “Middle” Led on, ”Full” Led twinkling; Testing results: 12.1-13V Charging Voltage, Middle charged Battery, better being charged. Display 6: “Full” Led on, ”Good” Led twinkling; Testing results: 13.1-13.9V Charging Voltage, Good battery, Full Charged Display 7:”Good” Led on, “Fault” Led twinkling; Testing results: 14-15.7V Charging Voltage, Battery may be damaged, Check the engine and tester. Important Compatibility Note: Designed exclusively for 12V vehicles (gas, hybrid electric cars, SUVs, motorcycles, light trucks). NOT compatible with 24V systems. Package include: 1 x 12V Battery Tester

• Works with all 12V battery types including regular flooded, AGM, and GEL for cars, trucks, motorcycles, RVs, boats, and more
• Six LED indicators show battery health and alternator status; green means good/full, orange means middle, red means low. Intuitive, simple and clear.
• Features reverse polarity protection to prevent burnout, pure copper clips for excellent conductivity, and a non-slip design for easy use even with gloves
• Only compatible with 12V vehicles, such as Cars(Not only the gas cars, but also for Hybrid electric cars), SUVs and motorcycles,light truck
• This device does not need a built-in battery. When testing a dead battery, please charge the battery firstly.