FWIW:

Google AI: Energizer is launching new "Ultimate Child Shield" coin lithium batteries (available as of May 2026) featuring enhanced safety measures, including bitter coating, child-resistant packaging, and "Color Alert Technology" that turns saliva blue if swallowed. This addresses rising safety regulations under Reese's Law, which mandates strict packaging and safety standards for button cells. [1, 2, 3]

Search: new button cells coming

https://energizer.com/3in1childshield/