Energizer Max AAA Batteries (LR03) - 12 Pack

This is a maxi pack of twelve Energizer Max AAA cells, the slim 1.5V alkaline size that most homes get through faster than any other. AAA is the IEC size LR03, so if the cell you are replacing has LR03 or R03 printed along its side, this is the right one. Alkaline is the standard household chemistry: a nominal 1.5V per cell and steady output at the modest, continuous drain rates that remotes, clocks and small electronics ask for. The pack prints a 10 year shelf life, which is the point of buying twelve at once rather than two.

Twelve is a sensible number to keep in a drawer, because AAA turns up everywhere in a house: television and set-top remotes, wireless keyboards and mice, digital thermometers, kitchen scales, wall clocks, small torches, children's toys and the transmitters in doorbells and weather stations. Most of those take two or four cells at a time, so a dozen covers several changes without another trip out. The same logic scales up for an office, a holiday let or a village hall, where the cells that run out are almost always AAA and almost always on a Friday afternoon.

Each cell is a nominal 1.5V, so a device asking for 3V or 4.5V is simply taking two or three in series. Check the polarity marks in the compartment before you close it, since a short cell is easy to seat the wrong way round. These are single-use alkaline cells and are not meant for a charger. One unit of this listing is a pack of twelve; the minimum order is 12, sold in multiples of 12. Our wider Energizer range also covers alkaline cells in AA, C, D and 9V, along with coin and button sizes.

Will these fit anything marked LR03 or R03?

Yes. AAA, LR03 and R03 are three names for the same 1.5V alkaline cell, so if your device lists any of them these will drop straight in.

How many cells do I actually receive?

One unit of this listing is a pack of twelve AAA cells. The minimum order is 12, sold in multiples of 12, so the smallest order brings 144 cells.

Can these be recharged?

No. These are single-use alkaline cells and must never go into a charger built for rechargeable NiMH cells. Choose rechargeable cells if that is what you want.

How long will an unopened pack keep?

The retail pack prints a 10 year shelf life, so spare packs kept somewhere cool and dry will still be ready when a remote finally gives up.

Should I change all the cells in a device at once?

It is good practice to change a full set together rather than mixing a fresh cell with a partly drained one, because the weakest cell sets the pace.