... life. High-energy environment-friendly Li-FeS2 button battery∴ In 2006, Heter company was developing ... of Li-FeS2 button battery.Application:Digital calipers, calculators, DV, electronic clocks, medical equipment, electronic dictionaries, measuring instrument ... , plug-in computer, radio transceiver and other electronic equipments.============================ FR1154 VS SR44Rated voltage 1.5V 1 ...