Power　lithium-ion　batteries　(LIBs)　are　an　important　component　of　carbon　neutrality　in　the　transportation　sector.　The　rapid　growth　of　the　LIB　recycling　industry　is　driven　by　various　factors,　such　as　resource　scarcity.　As　a　process　interacting　upstream　and　downstream,　LIB　recycling　must　consider　the　impact　of　the　application　of　modeling　approaches　on　the　allocation　of　environmental　benefits　and　burdens,　especially　at　a　time　when　carbon　emissions　are　highly　correlated　with　profit.　In　this　study,　seven　allocation　methods　were　chosen　and　applied　to　the　production　and　multiple　recycling　process　of　typical　LIB　on　the　same　data　basis.　The　application　of　different　allocation　methods　produced　very　disparate　allocation　results,　and　the　conclusions　of　previous　studies　comparing　the　environmental　performance　of　battery　types　need　to　be　revisited.　The　life-cycle　assessment　(LCA)　results　should　be　interpreted　with　caution　due　to　the　impact　of　the　allocation　methods.　Furthermore,　a　multi-indicator　qualitative　analysis　based　on　product　and　process　characteristics　compares　the　applicability　of　the　allocation　methods　to　different　aspects　of　LIB　recycling.　Relevant　product　standards　for　batteries　should　consider　the　characteristics　of　different　methods　and　recommend　a　specific　allocation　method　for　the　LCA　community　to　employ　in　time　to　ensure　that　relevant　studies　are　representative　and　comparable.