Into Gear's premium range of motorcycle battery maintaining and charging units come from the best in the business, Optimate. 
Convert your older charger battery cable with Tamia socket to the newer SAE-connector of this O7 cable with weather protected cap. 
This will allow you to use the wider range of SAE accessories or newer Optimate Charger.
Tech stuff:
18AWG / 0.82mm 5A / 7A Max Cable 
Thicker SPT-2W Insulation