Duracell's new coin batteries have a bitter coating that makes them taste terrible - The Verge
Amazon.com: Duracell - CopperTop AA + AAA Alkaline Batteries Combo Pack, 20 Count Each - Long Lasting, All-Purpose Double A & Triple A Battery - 40 Count Total : Electronics
Duracell Coin and Button batteries - Long lasting power
Duracell® Introduces Quantum™ the World's Most Advanced Alkaline Battery with One Million Battery Donation to First Responders across North America | Procter & Gamble News
Coin & Button Cell Batteries - Batteries - The Home Depot