... , 70% weight of silver zinc and zinc-manganese battery. 6, Environment-friendly, RoHS compliant. 7, Abundant ... FeS2 ensure the mass production of Li-FeS2 button battery.Application:Digital calipers, calculators, DV, electronic clocks ... dictionaries, measuring instrument, sensors, plug-in computer, radio transceiver and other electronic equipments.============================ FR1154 VS SR44Rated voltage ...