Patent ID: 8884878

Claim:
A mouse comprising: a housing; a circuit board disposing in the housing; a positive power terminal electrically connecting to the circuit board; a negative power terminal electrically connecting to the circuit board; a plurality of battery slots electrically connecting to the circuit board, and the battery slots each comprising a positive battery terminal and a negative battery terminal, the positive battery terminal of one battery slot electrically connecting to the positive power terminal and the negative battery terminal of the another one battery slot electrically connects to the negative power terminal; a change-over switch electrically connecting to the circuit board, and the change-over switch electrically connecting to the positive power terminal, the negative power terminal, the negative battery terminal of the battery slot whose positive battery terminal electrically connecting to the positive power terminal and the positive battery terminal of the battery slot whose positive battery terminal electrically connecting to the negative power terminal; and a toggle switch disposing on the housing and connecting to the change-over switch, wherein the toggle switch optionally triggers the change-over switch; in a first mode, the change-over switch being triggered by the toggle switch to connect the negative power terminal with the negative battery terminal of the battery slot whose positive battery terminal electrically connecting to the positive power terminal, and the change-over switch being triggered by the toggle switch to connect the positive power terminal with the positive battery terminal of the battery slot whose negative battery terminal electrically connecting to the negative power terminal, and forming a parallel connection; in the second mode, the change-over switch being triggered by the toggle switch to connect the negative battery terminal of the battery slot whose positive battery terminal electrically connecting to the positive power terminal with the positive battery terminal of the battery slot whose negative battery terminal electrically connecting to the negative power terminal, and forming a series connection.