Energizer Recharge Power Plus AAA Batteries (HR03) - 4 Pack

These are AAA rechargeable cells from the Energizer Recharge Power Plus range, sold four to a pack. Each cell is nickel metal hydride, rated at 1.2V and 700mAh, and carries the code HR03. They come pre-charged, so the first set can go straight from the pack into a device rather than sitting on a charger overnight. The pack describes them as the world's first made with 22% recycled materials, and states that they last up to four times longer than Energizer standard alkaline cells in digital cameras, with results varying by device.

Rechargeable AAA cells pay their way in whatever drains batteries fastest: games controllers, wireless mice and keyboards, headsets, children's toys, remote controls in constant use and small torches. Voltage is the one thing worth checking first. A NiMH cell runs at 1.2V where a fresh alkaline cell reads 1.5V, and a small number of items ask specifically for alkaline, smoke alarms among them, so read the device instructions if you are unsure. Beyond those, one set in use and one set on charge keeps a busy household going without a drawer filling up with spent cells.

Charging is done in a NiMH charger, the type sold for AA and AAA rechargeables; there is no charger in this pack. Four cells suits the common device that wants a pair, since you can keep a charged set waiting while the other set is in use. We sell this listing as a pack of four cells, with a minimum order of 12 packs bought in multiples of 12, which comes to 48 cells in total. It sits alongside our wider Energizer range, which runs from AA and AAA alkaline cells to C, D and 9V sizes, coin cells, and a one hour charger supplied with AA cells.

Will these work in a device that came with ordinary AAA batteries?

In most cases yes, as the size and shape are identical. A NiMH cell runs at 1.2V rather than the 1.5V of a fresh alkaline, so check the instructions on anything that asks specifically for alkaline cells.

Do I need a particular charger?

You need a charger made for NiMH rechargeables in AA and AAA sizes. No charger is included with this pack, so you will need one already or bought separately.

Are they charged when they arrive?

The pack states that they are pre-charged, so the first set can go into a device immediately. Once they run down, put them on charge and use them again.

What does the 700mAh figure tell me?

It is the cell capacity. At a given current draw, a higher figure means longer between charges. AAA cells are physically smaller than AA, so their capacity is always lower than an AA of the same type.

What is HR03?

HR03 is the international code for a rechargeable NiMH cell in the AAA size. If a manual asks for AAA, HR03 or micro rechargeable cells, these are the right thing.

How many cells do I receive, and what is the smallest order?

One unit is a pack of four cells. The minimum order is 12 packs, bought in multiples of 12, which works out at 48 cells in total.