OBD II Car Memory Saver Cable with Digital Display

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Hassle-Free Exchanges & Returns for 30 Days. · 6-Month Limited Warranty. Features - Compatible with all 12V DC power supplies, such as running car starters, 12V lead-acid batteries and vehicle DC power ports. The screen separately shows voltage in red digits and current in blue digits for real-time data monitoring.Dual Digital Display for Voltage & Current - Connect the device to a fully charged spare battery and the car's OBD port. Read the real-time voltage and current values on the screen. Remove car fuses one by one; if the current value drops sharply, the corresponding circuit has electric leakage. Check the vehicle wiring diagram to locate the faulty circuit or electrical component.Vehicle Battery Leakage Detection Tool - Multi-Layer Safety Protection Design - Built-in 3A fuse for overload protection; - Abnormal voltage/current triggers screen flashing warning; - Reverse connection protection: the digital screen stays off and no power output if clips are connected backwards, avoiding circuit damage. - Supplies continuous power to the vehicle ECU during battery replacement to avoid loss of ECU stored data.ECU Memory Retention When Replacing Car Batteries - Important Reminder: Cut off all vehicle power and stop all electrical equipment operation during battery swap to prevent instantaneous overcurrent. Critical Usage Note Disconnect the vehicle's original main battery after plugging the tool into the OBD port to create a load circuit. If the original battery remains connected and charged, no current will pass through the tester, and leakage detection cannot work normally. What's in the box 1 x OBD II Car Memory Saver Cable