Duracell – CopperTop D Alkaline Batteries with recloseable Package – Long Lasting, All-Purpose D Battery for Household and Business – 8 Count (Pack of 2)

Customers find these batteries to be the best on the market with a long shelf life of up to 10 years, and one customer reports they still work after 6 months of use. They receive positive feedback for their value, reliability, and accuracy, with customers noting they work as expected and are exactly as advertised. Customers appreciate the brand's reliability and power, with one mentioning they provide steady power right out of the box, while another notes they're perfect for emergency kits and infrequently used electronics.