A control apparatus for a secondary battery (102, 1005), comprising: a request acquiring part that acquires a request for power release/absorption and a requested value for released/absorbed power; a discharged/charged power calculator that calculates discharged/charged power of said secondary battery (102, 1005); a command value outputting part that outputs a calculated value of the discharged/charged power calculated by said discharged/charged power calculator as a command value for discharged/charged power; a bidirectional converter that controls discharge/charge of said secondary battery (102, 1005) such that the discharged/charged power is the command value outputted by said command value outputting part; a heater that consumes power and heats said secondary battery (102, 1005); a limit-contents deciding part that decides contents of a limit for power supply to said heater, the limit for power supply including permission or prohibition for power supply to said heater; a supply controller that controls power supply to said heater in accordance with the decision made by said limit-contents deciding part, and a temperature sensor that measures a temperature of said secondary battery (102, 1005), wherein said limit-contents deciding part permits power supply to said heater regardless of the request acquired by said request acquiring part when the measured value of the temperature measured by said temperature sensor is lower than a first lower limit, permits power supply to said heater upon acquirement of the request for power absorption by said request acquiring part and prohibits power supply to said heater upon acquirement of the request for power release by said request acquiring part when the measured value of the temperature measured by said temperature sensor is higher than the first lower limit and lower than a second lower limit. a request acquiring part that acquires a request for power release/absorption and a requested value for released/absorbed power; a discharged/charged power calculator that calculates discharged/charged power of said secondary battery (102, 1005); a command value outputting part that outputs a calculated value of the discharged/charged power calculated by said discharged/charged power calculator as a command value for discharged/charged power; a bidirectional converter that controls discharge/charge of said secondary battery (102, 1005) such that the discharged/charged power is the command value outputted by said command value outputting part; a heater that consumes power and heats said secondary battery (102, 1005); a limit-contents deciding part that decides contents of a limit for power supply to said heater, the limit for power supply including permission or prohibition for power supply to said heater; a supply controller that controls power supply to said heater in accordance with the decision made by said limit-contents deciding part, and a temperature sensor that measures a temperature of said secondary battery (102, 1005), wherein said limit-contents deciding part permits power supply to said heater regardless of the request acquired by said request acquiring part when the measured value of the temperature measured by said temperature sensor is lower than a first lower limit, permits power supply to said heater upon acquirement of the request for power absorption by said request acquiring part and prohibits power supply to said heater upon acquirement of the request for power release by said request acquiring part when the measured value of the temperature measured by said temperature sensor is higher than the first lower limit and lower than a second lower limit.