J&J Batteries

The 1st choice of commercial and boating enthusiasts, a solid performer with long service life.


With more than 15 million car batteries sold each year, Interstate Batteries is America’s No. 1 replacement-brand battery.

Australians are now also benefitting from these reliable quality batteries.


All Delkor products are maintenance-free (MF) batteries that contain an apparatus for gas/liquid segregation, to maximize electrolyte collection, and a calcium alloy, eliminating the need to replenish distilled water for the entire life of the product. In addition, the calcium MF battery minimizes self-discharge for extended life, making the product convenient for the user and economically practical.

Sea Master

The Sea-Master battery boasts a superior cranking and reserve capacity, giving boating enthusiasts the power to meet the demands of their marine applications and the ‘heavy pounding of rough seas.