Waste NMC (nickel-manganese-cobalt) lithium battery packs and LFP (lithium iron phosphate) battery packs are processed through battery pre-treatment lines to obtain electrode powder. The NMC battery electrode powder and waste materials are further processed through acid leaching and solvent extraction lines to extract metals such as nickel, cobalt, and manganese, while the LFP battery electrode powder and waste materials are processed through acid leaching lines to extract li