A cell controller for controlling a serially connected body of cells constituted by connecting a plurality of groups (AB1 to AB12) of cells in series, each of said groups being constituted of a plurality of cells connected in series, the cell controller comprising a plurality of ICs (IC-1A to IC-12B) corresponding to said groups (AB1 to AB12), said plurality of ICs (IC-1A to IC-12B) each having a voltage detecting unit for detecting voltages of respective cells constituting said groups (AB1 to AB12), a switch control unit for controlling conduction and a blocking operation of a plurality of switch elements (SW1 to SW4) connected in parallel to said respective cells via resistors, an information input terminal for inputting control information, an information output terminal for outputting control information, a power supply terminal, and a reference potential terminal, said plurality of ICs (IC-1A to IC-12B) operating based on power supplied from said cells constituting said groups (AB1 to AB12) to said power supply terminal (Vcc) and said reference potential terminal; said plurality of ICs (IC-1A to IC-12B) detecting voltages of respective cells by said voltage detecting unit and controlling said plurality of switch elements (SW1 to SW4) connected in parallel to said respective cells via resistors by said switch control unit to adjust states of charges of said cells, wherein: among said groups (AB1 to AB12) connected in series, said information output terminal of a higher order IC (IC-6A) corresponding to one group of adjacent groups and said information input terminal of a lower order IC (IC-7A) corresponding to the other group of said adjacent groups are connected electrically; transmission of control information is performed from said information output terminal of said higher order IC (IC-6A) to said information input terminal of said lower order IC (IC-7A), or said information output terminal of said lower order IC (IC-7A) and said information input terminal of said higher order IC (IC-6A) are connected electrically; transmission of control information is performed from said information output terminal of said lower order IC (IC-7A) to said information input terminal of said higher order IC (IC-6A); and a power supply terminal (Vcc) of said lower order IC (IC-7A) is connected to a positive electrode of a higher-order cell among said cells constituting said corresponding group via a first inductor and is directly connected to a reference potential terminal of said higher order IC (IC-6A). among said groups (AB1 to AB12) connected in series, said information output terminal of a higher order IC (IC-6A) corresponding to one group of adjacent groups and said information input terminal of a lower order IC (IC-7A) corresponding to the other group of said adjacent groups are connected electrically; transmission of control information is performed from said information output terminal of said higher order IC (IC-6A) to said information input terminal of said lower order IC (IC-7A), or said information output terminal of said lower order IC (IC-7A) and said information input terminal of said higher order IC (IC-6A) are connected electrically; transmission of control information is performed from said information output terminal of said lower order IC (IC-7A) to said information input terminal of said higher order IC (IC-6A); and a power supply terminal (Vcc) of said lower order IC (IC-7A) is connected to a positive electrode of a higher-order cell among said cells constituting said corresponding group via a first inductor and is directly connected to a reference potential terminal of said higher order IC (IC-6A).