Duracell Coppertop D Batteries, 4 Count (1 Pack), D Battery with Long-lasting Power, All-Purpose Alkaline Battery for Household and Office Devices

Customers find these batteries reliable and long-lasting, holding their charge well in storage. They appreciate the brand's trustworthiness and consider them good value for money, with one customer noting they're particularly useful for emergency lanterns. The power supply receives mixed reviews - while many say they provide good power for a long time, some mention they are low.