Costco's Kirkland batteries are made by Duracell

Costco's Kirkland Signature batteries are manufactured by Duracell, offering a cost-effective alternative to name-brand options. This partnership allows Costco to provide high-quality, long-lasting batteries at a significantly lower price point than comparable Duracell products. Kirkland batteries are mercury-free and boast a 12-year shelf life, making them a reliable and environmentally conscious choice for consumers.