Power the devices that keep your household running with Energizer Alkaline Power Size D Batteries. Energizer batteries deliver long-lasting power for the stuff you count on, like flashlights and clocks. Great for long runtimes, these Energizer D batteries provide the performance that you depend on to get through your day. This Energizer battery pack lasts up to 10 years in storage, helping you prepare for unexpected situations. So whether you need a size D battery to power a smart home device or a toy, you have power you can count on when you need it most. Alkaline Power is available in AA batteries, AAA batteries, C batteries, D batteries and 9V batteries. Trust in Energizer for reliable power and performance in any situation.