The utility model provides a rechargeable battery module and buoy that has this rechargeable battery module, this rechargeable battery module is including a rechargeable battery, a light -emitting component and a shell body, and this rechargeable battery is for power supply, and this light -emitting component and this rechargeable battery electric connection are in order to disengage light, and this shell body is used for acceping this rechargeable battery and this light -emitting component to install on this buoy. According to with through this rechargeable battery modularization notion, canuse and install on a buoy, make this buoy disengage light and reach luminescent display, and have simple and easy installation, repeated advantage such as charge.本創作提出一種充電電池模組及具有該充電電池模組的浮標，該充電電池模組包括有一種充電電池、一發光組件與一外殼體，該充電電池用以供應電源，該發光組件與該充電電池電性連接以釋出光線，該外殼體用以收容該充電電池與該發光組件，並安裝於該浮標上。據以透過該充電電池模組化概念，可應用並安裝於一浮標上，使該浮標釋出光線達到發光顯示、且具有簡易安裝、重複充電等優勢。
