LiFeS2 Battery is a Lithium Ferrous Disulfide LiFeS2 Battery. As a new type of high-energy disposable lithium battery, it has light weight, high energy and strong ability to discharge large current. Especially suitable for use in heavy load occasions, it has gradually become the best power supply for portable electronic products. We offer high quality LiFeS2 batteries, please contact us. https://www.energy-x.org/li-fes2-battery/