Features 1、Car battery replacement memory works with any 12V DC power source, car battery (including running starters, battery memory saver DC 12V lead-acid batteries or other automotive DC 12V power outlets). The memory saver displays voltage and current, the car battery saver is red for voltage and green for current. 2、Using this simple memory device can help you avoid losing your settings when replacing your car battery with reverse polarity protection and leakage detection. Overcurrent protection (with 5A fuse); Current clamp anti-reverse connection protection (digital tube does not light up after reverse connection, no power). 3、How to Use: Connect the two crocodile clips to 12V DC from the battery, the red indicator light will be on, then insert the plug into the O-B-D port of the car, there will be a continuous beeping sound, now you can remove the old battery from the car and install the new battery. 4、With reverse connection protection, wrong connection protection, self insurance, leakage detection and other functions. 5、If the original vehicle battery power loss is serious, checking the battery replacement tool is equal to charging the original vehicle battery directly, the current can reach a few amps to dozens of amps, due to the tool's fuse is 5A, it will lead to the battery replacement tool fuse blown, and can not achieve the purpose of replacing the battery without breaking the power. Correct practice: to the original vehicle battery power, restart, electric full of electricity and then replace. Specification Specifications: Material: Plastic, copper Scope of Application: 12V vehicle battery Maximum Current: 5A Cable Length: 1.5m / 59inch Package Weight: 100g / 3.52oz Package Size: 15.2 * 10.2 * 4cm / 5.98 * 4.01 * 1.57in Package List <span style="font-size: 14px;">Package List:</span> <span style="font-size: 14px;">1 * Car Memory Saver Protection Cable</span> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin