Panasonic D Size Alkaline Power Batteries - 2 Pack

Panasonic D size alkaline batteries deliver 1.5V per cell in a 2-pack blister, designed for devices that draw higher current over extended periods. Each D cell measures 34mm diameter by approximately 61mm height and uses an alkaline chemistry that balances shelf life with discharge capacity for medium to high-drain applications.

The batteries suit torches, portable radios, larger remote-controlled toys, camping lanterns, and battery-powered household devices where AA or AAA cells lack sufficient capacity. The alkaline formulation provides a flatter discharge curve than zinc-carbon alternatives, meaning voltage remains more stable across the usable life of the cell. Panasonic positions this range as entry-level alkaline, offering a cost-effective option for devices used regularly but not continuously.

Panasonic reduced Volatile Organic Compound (VOC) emissions during production of this range, which contributes to lower environmental impact during manufacturing. The batteries are sold in a 2-pack blister that protects terminals during storage and transport. Shelf life when stored at room temperature is typically 5-7 years from date of manufacture, making them suitable for emergency kits and infrequently-used devices as well as regular household use.

What devices are D batteries typically used in?

D cells are used in high-drain devices that need longer runtime than AA or AAA batteries can provide. Common applications include large torches, camping lanterns, portable radios, boomboxes, battery-powered fans, and larger children's toys. They also appear in some older smoke alarms and emergency lighting units.

How long do these batteries last in storage?

Alkaline D cells typically retain 80-85% of their charge after 5 years when stored at room temperature in the original packaging. For emergency kits or infrequently-used devices, check the date code on the blister pack and rotate stock every 3-5 years.

Can these be used in devices that originally specified carbon-zinc batteries?

Yes. Alkaline D cells are direct replacements for carbon-zinc (zinc-carbon) D cells and provide longer runtime and more stable voltage across the discharge cycle. Any device designed for D-size batteries will accept alkaline cells.

Are these batteries rechargeable?

No. These are single-use alkaline cells and should not be placed in a charger. For rechargeable D cells, look for NiMH (nickel-metal hydride) versions, which have a lower nominal voltage of 1.2V but can be recharged hundreds of times.