Energizer Max Plus AAA Batteries (LR03) - 4 Pack

These are AAA alkaline cells from the Energizer Max Plus line, supplied four to a card. Each one gives the 1.5 volts that AAA equipment is built around, and the pack carries the code LR03, which is the designation printed inside a battery compartment or quoted in a manual when a maker specifies exactly what to fit. If your device asks for LR03, this is that cell. Alkaline is the everyday chemistry for household kit: it holds a usable voltage through moderate, steady draw rather than short bursts of very high current. The pack prints a 15 year shelf life, so a spare card kept in a drawer should still be good years after you bought it.

AAA is the size that ends up in the small, dull, important things: television and set top box remotes, wall clocks, a wireless mouse or keyboard, digital thermometers, kitchen scales, bike lights, children's toys, and the door and motion sensors that come with alarm or heating controls. Four cells cover two remotes, or one four-cell toy, from a single card. The pack also claims up to 150% longer lasting, and its small print sets that against carbon zinc cells in toys, which is a high drain use rather than a clock or a handset.

One unit of this listing is a card of four cells. Our minimum order is 12 units, sold in multiples of 12, which brings 48 cells in one go and suits a household stocking up, an office supplies drawer or a school. Fit all four cells at once rather than swapping one at a time, because a tired cell sitting alongside fresh ones drags the whole set down. Alongside this we stock Energizer alkaline cells in AA, C, D and 9V, and lithium coin cells such as CR2032.

My device manual says LR03. Is that the same as AAA?

Yes. LR03 is the international code for an alkaline AAA cell, and this pack is marked AAA-LR03, so the two names describe the same cell.

How many cells do I actually receive?

One unit is a card of four cells. The minimum order is 12 of those cards in multiples of 12, so a smallest order brings 48 cells.

Can I recharge these once they are flat?

No. Alkaline cells are single use by design and are not made to be put in a charger. For repeat charging you need cells sold as rechargeable.

How long will they keep if I buy spares now?

The pack prints a 15 year shelf life. Keep them in the sealed card at normal room temperature and they should still hold charge when you need them.

What sort of devices suit these best?

Moderate, steady draw kit: remote controls, wall clocks, wireless mice and keyboards, thermometers, kitchen scales, bike lights and small children's toys all run on AAA.

Can I mix these with the cells already in a device?

Better not to. Replace the whole set together, since a partly used cell will limit how much the fresh ones can give before the device stops.