In　order　to　maintain　the　voltage　balanced　of　the　long　bipolar　low-voltage　dc　supply　and　utilization　system,　multiple　distributed　voltage　balancers　(VBs)　are　demanded.　A　four-port　converter　with　dual　LC　balancing　branches　is　proposed　in　this　article　to　reduce　the　hardware　cost　of　a　distributed　VB.　The　converter　consists　of　two　dual　active　bridges　(DABs)　and　two　LC　balancing　branches.　The　LC　branches　and　DAB　full-bridge　circuits　on　the　grid　side　form　two　interleaved　LC　VBs.　The　proposed　converter　integrates　voltage　balancing　and　device　grid　connection　functions　through　a　switch-sharing　technology,　which　can　effectively　replace　distributed　VB.　Most　importantly,　both　functions　of　the　converter　can　be　operated　simultaneously.　In　addition,　interleaved　LC　VB　can　achieve　smaller　grid　connected　voltage　ripple.　All　the　switches　of　the　converter　turn　ON　with　zero-voltage　switching.　The　validity　of　the　proposed　converter　is　verified　through　+/-　375　V　Simulink　simulation　and　+/-　24　V　down-scaled　power　experimental　prototype.