A new lithium coin battery from Energizer produces a blue dye as soon as it comes into contact with moisture, like … saliva? With the help of the marker, parents can now instantly see if their kids have inadvertently choked on one.
This is noteworthy because so-called "button" batteries have been integrated into everything from culinary thermometers and smart watches to key fobs and remote controls. Unfortunately, their widespread use has been linked to a significant increase in the number of children swallowing the tiny batteries. Between 2010 and 2019, there were almost 70,300 emergency medical visits for battery-related incidents among youngsters. Approximately 85% of them were due to button batteries.
After an 18-month-old Texas toddler named Reese Hamsmith died after ingesting a button battery in 2020, her mother started a crusade that resulted in the passage of Reese’s Law in 2022, which strengthens safeguards around the batteries.
While Duracell has pioneered a transparent, non-toxic, bitter-tasting coating designed to help discourage swallowing, Energizer recently collaborated with the children's safety group Reese's Purpose to produce the safer lithium battery and even tougher childproof packaging.
The last line of defense in the new Energizer battery is its dotted, negative underside, which is referred to as "color alert technology." It releases a food-grade blue dye that is safe to eat when it comes into contact with moisture and has as much dye as an ounce of flavored sports drink.