CONVENIENT CHARGING: 22 inch cable connects to your vehicle’s battery through the OBDII port, eliminating the need for direct battery connection OBDII PORT CHARGING: Allows vehicle battery to charge without the key in the ON position which is much more convenient than charging via cigarette adaptor SAFETY FIRST: OBDII port is fused to maintain safety; cable is 22 inches long with a 3 AMP maximum and a quick disconnect harness SOLAR COMPATIBLE: Can be used with Battery Tender solar panel battery chargers and maintainers with built-in microprocessors