Utilize the input text as a context reference, choose the right relationship between Duracell and battery from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Duracell AA batteries cost nearly twice as much per battery at Walmart than at Costco, for example.

Answer: product_or_material_produced