Lithium Ion defines a battery class of which LiMnCo or LiFePO4 belong to and many other combinations. LFP is short for Lithium Ferrous Phosphate and is the nice english language description for the scientific elemental compound LiFePO4 which means Li = Lithium, Fe = Ferrous, PO4 = Phosphate which is commonly misinterpreted in English as Lithium Ion Phosphate but in fact, means Lithium Iron Phosphate.