Lead　carbon　battery　has　been　widespread　concern　with　its　excellent　performance　of　charge　and　discharge　under　High　Rate　Part　State　of　Charge　(HRPSoC)　as　well　as　its　cycle　performance.　In　this　paper,　the　cycling　performance　of　lead　carbon　battery　for　energy　storage　was　tested　by　different　discharge　rate.　The　effects　of　different　discharge　rate　on　the　composition　and　morphology　of　positive　active　materials　in　the　cycle　was　studied　by　XRD　and　SEM.　The　effect　of　different　discharge　rate　on　the　ohmic　impedance　of　lead　carbon　battery　was　studied　by　testing　Electrochemical　Impedance　Spectroscopy　with　different　capacity　retention　rates.　The　results　show　that　with　the　increase　of　the　discharge　rate,　the　content　of　PbO2　in　the　positive　active　material　increases,　the　active　substance　utilization　and　the　particle　size　of　PbO2　crystal　declines,　and　the　ohmic　impedance　of　the　battery　decreases.