Energizer Alkaline Power D Batteries (LR20) - 2 Pack

These are D size cells from the Energizer Alkaline Power line, supplied two to a pack. D is the largest of the four common cylindrical sizes, and it is chosen for capacity rather than power: the chemistry here is alkaline and the nominal voltage is 1.5V, exactly the same as an AA, so what the larger case buys you is a longer run before the cells need changing. The code printed against this size on alkaline packs is LR20. The pack states a five year shelf life.

D cells belong in the things that have to keep working without much thought: big rubber bodied torches, camping and emergency lanterns, portable radios, wall mounted door chimes, some smoke and carbon monoxide alarms, and the larger battery powered candles and lanterns that come out over winter. Before you order, open the battery compartment and count the slots, because a single large torch can take two, three or four cells, and a pack of two will not always fill it. Alkaline cells are single use: they are not rechargeable and should not go into a charger.

Each pack holds two cells. The minimum order on this listing is six packs, sold in multiples of six, so the smallest order brings twelve D cells in total, which suits a household that keeps a spare set in a drawer as much as it does a caretaker restocking a cupboard. With a five year shelf life printed on the pack, cells bought now will still be good long after the current set in the torch has given up. This listing sits alongside the other Energizer alkaline sizes we stock, which run from AAA and AA through C to the 9V block.

Which code should I match this against?

D is the size name and LR20 is the code carried by an alkaline cell of that size, so if a manual or a device asks for LR20 or simply for a D cell, this pack is the right one.

Can these be recharged?

No. These are alkaline cells, made to be used once and then replaced, so they should never be put into a battery charger of any kind.

How many cells do I actually receive?

Each pack contains two D cells. The minimum order is six packs, sold in multiples of six, so the smallest order you can place brings twelve cells in total.

What is the difference between a D cell and a C cell?

Both give 1.5V, but a D cell is physically larger and holds more energy, so it runs longer. They are not interchangeable, and the battery compartment decides which you need.

Are these suited to something that runs for hours at a time?

Yes. A D cell is chosen precisely for longer running work such as camping lanterns, site torches and portable radios, where a smaller cell would need changing far sooner.

How long will an unopened pack keep?

The pack states a five year shelf life, so cells put away as spares now should still be ready to use when the ones in service finally run down.