This is the same quick-disconnect harness included with Optimate battery chargers (sold separately). Simply connect the 1/4" (6mm) ring terminals to your battery and leave the harness installed. The 2-pin plug matches the plug on Optimate chargers, letting you quickly plug in the charger for maintenance. When the battery is topped up, the harness unplugs even quicker.
The plug is polarized to prevent reverse connection, and an inline fuse provides additional protection. Complete kit includes harness, fuese, and two tethered dust caps to protect both sides of the disconnected plug.
Note: For bettery charging using Optimate battery chargers only. Not for use with any other brand. Not suitable for boosting or jump-starting.