... years shelf life. High-energy environment-friendly Li-FeS2 button battery∴ In 2006, Heter company was developing a new kind ... . 7, Abundant raw 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 ...