The MSV OBDII Memory Saver is the ultimate tool to depend on during vehicle battery replacements. Safely bridge the connections between an external battery or power source and the ECU using either the cigar plug or clamp attachments and OBD cable. This quick two step process prevents the loss of ECU memory such as seat position, multimedia codes, ECU fault codes and learned engine configurations during battery replacement. Never lose a setting again with the MSV OBDII Memory Saver!