- Is Duracell Optimum better than standard Duracell AAA?
- Duracell positions Optimum above its standard line, claiming longer life and a 4X power reserve. For low-drain devices like clocks, the difference is small; for toys and motorized gadgets it matters more.
- Are these batteries rechargeable?
- No. Optimum AAA cells are disposable alkaline batteries. If you want rechargeable AAA, look at NiMH cells and a charger instead.
- What devices are AAA batteries used for?
- Remotes, wireless mice, clocks, small toys, thermometers and many smart-home sensors. Check your device's manual before buying.
- Can I use these in a device that takes LR03 batteries?
- Yes. AAA and LR03 are the same size, so Optimum AAA fits any device that specifies AAA or LR03.
- How should I store unused batteries?
- Keep them in a cool, dry place in their packaging, away from metal objects. Don't mix old and new cells in the same device.
- Do these batteries expire?
- Alkaline cells have a shelf life of several years. Check the date printed on the pack and use older cells first.
- Where is the Duracell Optimum AAA Alkaline 18-pack cheapest?
- At Lowe's, for $20.88, as of our latest check.