Into Gear's premium range of motorcycle battery maintaining and charging units come from the best in the business, Optimate. 
DIN plug allows you to use a wide range of Optimate accessories from your bike's power socket. You can charge your bike's battery from the socket using the Optimate 4 Quad Programme charger.
Tech stuff:
18AWG / 0.82mm 5A / 7A Max Cable 
Thicker SPT-2W Insulation
DIN Plug-SAE Connections