So many button batteries I’ve tested have hidden dangers – but this brand gets it right

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ZDNET’s key takeaways

• Lithium button cells can cause severe injury or death if swallowed.
• Many makers coat their batteries in a bitter substance to discourage ingestion.
• Energizer has now added a marker dye to make it easier to spot ingestion.

Lithium button cell (sometimes called coin cell) batteries are everywhere, from car key fobs to AirTags. And while they seem innocent enough, if ingested, they can cause severe…