Car Battery Tester with LED Indicator & LCD Display,Battery Load Tester 12V Automotive with Alligator Clips,Universal Car Batteries and Alternator Testers for Most 12V Vechcles

CAR BATTERY TESTER, ESSENTIAL CHOICE FOR VEHICLE BATTERY AND ALTERNATOR MAINTENANCE, WORRY-FREE DRIVINGProduct AttributesColors: BlackSizes: Car Battery Tester: 4.71*2.75 inchLine Length: 12.20 inchAlligator Clips: 2.64*1.45 inchWeight: 3.73 ozPackage Size: 5.51*3.14*1.57 inchMaterial: ABS, PVCPackaging: Car Battery Tester*1, Package Insert*1LED Status Guide:FULL (Solid Blue): Battery fully charged & in optimal conditionMEDIUM (Solid Green): Battery voltage slightly low; recommend recharging soonLOW (Flashing Red + Buzzer): Critically low power; immediate charging requiredEMPTY (Solid White): Battery completely drained; must recharge before useHIGH (Solid Blue): Alternator overcharging (voltage abnormally high)GOOD (Solid Green): Alternator output normal & stableDEAD (Flashing Red + Buzzer): Battery voltage critically low; professional inspection advisedREVERSE (Solid Red + Buzzer): Clips connected backward; swap red/black immediatelyProduct Feature & Functions1. Digital LCD display shows the real-time voltage value, color-coded LED indicators visualize the battery/alternator health status, helping you quickly grasp the car battery/alternator status2. Connection error alert, if the connection is incorrect, the red LED will light up and a beep warning will sound to avoid damage to the device3. Switch between alternator mode and battery mode with clear LED status indication (FULL to DEAD) to make automotive battery testing more intuitive

• LED Indicator & LCD Display: Battery tester automotive designed with digital LCD display to show real-time voltage values, and color-coded LED indicators to show intuitively battery health status, help you to quickly grasp status of vehicle battery and accurately determine whether it is abnormal
• Real-Time Voltage Tracking: Auto battery tester captures voltage changes during vehicle startup and engine revving and clearly displays full-cycle voltage changes on LCD display, detecting even minor voltage anomalies in time to help you find these hidden problems before break down on road side
• Connect Error Alert: Battery and alternator tester with built-in reverse connection protection, if wrong connection, red "REVERSE" indicator will light up and sound alarm, adjust it in time to avoid damage, just connect red alligator clips to positive, and black alligator clips to negative
• Quick Diagnosis: Battery tester 12V automotive supports two modes of switching, generator mode: LED show the output status (GOOD/HIGH/DEAD) and the LCD screen displays the real-time voltage, and battery mode: LED give direct feedback on status of battery (FULL to EMPTY)
• Wide Compatibility: 12V battery tester designed for 12V systems, widely used in cars, SUVs, trucks, motorcycles, RVs, boats, tractors, etc, to keep long-term stable use, oil engines and diesel engines are compatible, easy to store and carry, a good choice for vehicle maintenance