what has button batteries

Button batteries are found in many small household items, especially devices that need a compact power source. Common examples include remote controls, car key fobs, watches, hearing aids, digital thermometers, musical greeting cards, children’s toys, calculators, and small electronic devices.

Common places

• Remote controls

• Car key fobs

• Watches

• Hearing aids

• Digital thermometers

• Greeting cards and small toys

• Calculators and other compact gadgets

Why they matter

Button batteries are small enough to be easily swallowed, and lithium coin cells are especially dangerous because they can cause severe internal burns very quickly if ingested. If a child may have swallowed one, urgent medical attention is needed right away.

Recent context

There has also been fresh safety-related attention around button batteries this year, including a 2026 report about Amazon being taken to court over alleged missing warning labels on children’s backpacks and a 2026 launch of “child safe” batteries by Energizer.

If you want, I can also give you a quick list of which everyday items in your home are most likely to contain button batteries.