PROBLEM TO BE SOLVED: To provide an electric reel feeding system for fishing and a battery capable of ensuring an appropriate combination of at least an electric connection between an electric reel for fishing and a battery. An electric reel system for fishing 1 of the present invention generates an identification signal for recognizing itself when electrically connecting an electric reel 10 and a battery 20, and outputs the identification signal to a connection partner. Based on the determination results of the units 13 and 21, the compatibility determination units 12 and 22 for receiving the identification signal and determining the compatibility of the connection, and the compatibility determination unit 22, the battery 20 is transferred to the motor 14. And a power control unit 25A that controls power supply. [Selection diagram]【課題】少なくとも魚釣用電動リールとバッテリとの電気的接続の適切な組み合わせを確保できるようにする魚釣用電動リール給電システム及びバッテリを提供する。【解決手段】本発明の魚釣用電動リールシステム１は、電動リール１０とバッテリ２０との電気的な接続時に自己を認識させるための識別信号を生成して接続相手に出力する識別信号生成出力部１３，２１と、識別信号を受信して接続の適合性を判定するための適合性判定部１２，２２と、適合性判定部２２での判定結果に基づいて記バッテリ２０からモータ１４への電力供給を制御する電力制御部２５Ａとを備える。【選択図】 図２
