12V Car Battery Digital Tester Tool Alternator 6 LED Lights Display Auto Diagnostic Tools(BM420 Battery Tester)

The function of 12V Digital Car Battery Tester : 1. Checking charge level 2. Functional test of dymano 3. Checking battery starting capability 4. Battery overload display Signal testing through low frequencies does not require an extemal charging. Directly check if the car's charging voltage is normal. Detect the starting voltage of the car. Detect the overload status of the car battery. How to use Digital Car Battery Tester ? To: Connect the test clips to battery positive and negative position, check the LED display to know the car battery condition. know the car battery condition. The detailed of 6 LED Lights: Alternator state check: First light (red): Fault Second light (green): Good Third light (green): Full Battery state check: First light (yellow): Middle Second light (red): Low Third light (green): OK Different Led display to show Battery Sate : Display 1: All Led lights off; Testing results: none Charging Voltage, Dead Battery Display 2:"ON" led twinkling, other Led off; Testing results:4.6-11.2V 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:11.2-11.6V Charging Voltage, Low charged Battery, being charged immediately. Display 4:"Low" led on, "Middle" led twinkling; Testing results: 11.6-12.2V Charging Voltage, Middle charged Battery, better being charged sooner. Display 5: "Middle" Led on; Testing results: 12.2V Charging Voltage, Middle charged Battery, better being charged. Display 6: "Middle" Led on, "Full" Led twinkling; Testing results: 12.2-13.1V Charging Voltage, Middle charged Battery, better being charged. Display 7: "Full" Led on, "Good" Led twinkling; Testing results: 13.1-14V Charging Voltage, Good battery, Full Charged Display 8:"Good" Led on; Testing results: 14V Charging Voltage, Good battery, Full Charged. Display 9:"Good" Led on, "Fault" Led twinkling; Testing results: 14-16V Charging Voltage, Battery may be damaged, Check the engine and tester. Display 10:"Fault" Led on; Testing results: Above 16V Charging Voltage, fault Battery. Battery tester Specification: Color : Gray Test Method: Positive and negative test clips Voltage Range: 4V-12V Material: ABS industrial material Product Size: 4.7 inch*1.9 inch*0.7 inch Display: Threeoolor LED light display Weight: About 100g Testing Clips Used to clip on the car battery,Red clip to positive,Black clip to negative. Packing List : Color Box *1 User Manual *1 Main Unit*1 Testing Clips*1

• No leakage, no heat, safe operation.
• Operated without interruption, full protection, Reverse protection.
• Quick and accurate display of battery test results (only cost 3 seconds).
• It can be detected directly in the car without removing the battery.
• It shows the health condition of battery.