Problem to be solved: to provide a power transmission repeater for spinning Lille which is capable of transmitting power as an extension code.The power transmission relaying apparatus has a connection cord member 10 and a transfer cord member 20, and the connection cord member comprises a first power supply connection terminal 111, a connection line 13, and a connector member 14, and the first power supply connection terminal is connected to a connecting line and a coil The transfer cord member is electrically connected to the battery 30 via a nector member, and the transfer cord member comprises a transmission cord 21 and a second power supply connection terminal 22 that are electrically connected to one end of the transmission cord and detachably connected to a first power supply connection terminal IsIt is possible to provide excellent waterproofing effect by the coupling structure of the second power source connection terminal and the first power source connection terminal, and even if it is wet with sea water, the metal parts inside the second power source connection terminal and the first power source connection terminal do not break, and the occurrence of rust can also be prevented. The connection cord member is used as an extension cord to electrically connect the battery and the spinning Lille 40.Diagram【課題】特に延長コードとして電力の伝送を行うスピニングリール用の電力伝送中継装置を提供する。【解決手段】電力伝送中継装置は、接続コード部材10及び転送コード部材20を有し、該接続コード部材は、第一電源接続端子111と、接続線13と、コネクタ部材14を備え、該第一電源接続端子は、接続線及びコネクタ部材を介してバッテリ30に電気接続され、該転送コード部材は、伝送コード21及び第二電源接続端子22を備え、該第二電源接続端子は、伝送コードの一端に電気接続され、着脱可能に第一電源接続端子に接続され、該第二電源接続端子及び第一電源接続端子の結合構造により優れた防水効果を提供し、海水で濡れても第二電源接続端子及び第一電源接続端子の内部の金属部品が壊れることはなく、錆の発生主も防止できる。また、接続コード部材を延長コードとして、バッテリとスピニングリール40とを電気接続する。【選択図】図1