... 10 years shelf life. High-energy environment-friendly Li-FeS2 button battery∴ In 2006, Heter company was developing a new ... materials: limited silver resource restricts the yield of Zn-Ag button battery. Abundant materials in Li-FeS2 ensure the mass production ... of Li-FeS2 button battery.Application:Digital calipers, calculators, DV, electronic clocks, medical ...