MEIRIYFA OBD2 Car Battery Change Saver Memory Vehicle ECU Emergency Power Supply Cable Replacement 12V Digital Display OBD II Battery Leakage

MEIRIYFA car battery change memory works with any 12V DC power source, including a running starter, DC 12V lead-acid battery, or other automotive DC 12V power outlet. It displays both voltage and current, red for voltage and green for current. Reliably clamp the battery clips onto the positive and negative terminals of the spare battery (red clip connects to the positive terminal, black clip connects to the negative terminal). Connect the tool's OBD connector to the vehicle's OBD connector. If the connection is successful, the green LED will light up. Red light on:Representing a good connection with the storage battery, the red screen will show the current voltage of the storage battery, the blue screen will show the current, (currently no load, 0). Blue light on: connect with car OBD, the red screen will show the current integrated voltage. The blue screen will display the current generated. (Provided that the on-board loss battery is lower than the backup battery voltage). Protect the vehicle, when replacing the car battery, it can be used to supply power to the vehicle ECU and prevent the vehicle ECU data from being lost. High insulation, strong alligator clip bite, iron surface nickel-plated treatment, effectively play the role of anti-corrosion, anti-oxidation, resistance to insertion and extraction.

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