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Only two manufacturers of power sports batteries in the USA. East Penn/Deka & Johnson Controls. East Penn makes the stock OEM Harley battery, Big Crank, Duracell gray case (black case made in China), O'Reilly, X-Rated & most other common ones you hear about. Just re-labled. JC makes Interstate Batteries. Yuasa are made here now under contact from others. They & Deka supply to Drag Specialties. I use the Duracel Gray from Batteries Plus. It has a two year warranty.
Ive always had better results with the OEM original HD style battery. Went out and got the Napa power sports model made by East Penn Manufacturing and it was toast exactly 12 months and two weeks. No warranty cause it was over the 1 year mark, and sad thing is that it was always kept on a battery tender.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.