A storage battery control device configured to control a storage battery system, the storage battery system comprising a plurality of storage batteries (C1 to Cn) connected in series and a bypass circuit configured to selectively bypass each of the plurality of storage batteries (C1 to Cn), the storage battery control device comprising: a processor; and a memory having instructions that, when executed by the processor, cause the storage battery control device to perform operations comprising: in a charging procedure of two consecutive charging processes: performing a first, initial charging process of causing the bypass circuit to bypass, among the plurality of storage batteries (C1 to Cn), a storage battery having a smaller remaining charge amount until completion of charging than those of the other storage batteries, and charging at least one of the other of the plurality of storage batteries (C1 to Cn) such that a difference in remaining charge amounts among the plurality of storage batteries (C1 to Cn) until completion of the first charging process is reduced; and performing, after the first charging process, a second charging process of charging all of the plurality of storage batteries (C1 to Cn) until the charging of all of the plurality of storage batteries (C1 to Cn) is completed, wherein the first charging process and the second charging process are carried out such that a total voltage value of the storage battery system or a charging power limit value is maintained at a minimum allowable value allowed for the storage battery system or higher. a processor; and a memory having instructions that, when executed by the processor, cause the storage battery control device to perform operations comprising: in a charging procedure of two consecutive charging processes: performing a first, initial charging process of causing the bypass circuit to bypass, among the plurality of storage batteries (C1 to Cn), a storage battery having a smaller remaining charge amount until completion of charging than those of the other storage batteries, and charging at least one of the other of the plurality of storage batteries (C1 to Cn) such that a difference in remaining charge amounts among the plurality of storage batteries (C1 to Cn) until completion of the first charging process is reduced; and performing, after the first charging process, a second charging process of charging all of the plurality of storage batteries (C1 to Cn) until the charging of all of the plurality of storage batteries (C1 to Cn) is completed, wherein the first charging process and the second charging process are carried out such that a total voltage value of the storage battery system or a charging power limit value is maintained at a minimum allowable value allowed for the storage battery system or higher. in a charging procedure of two consecutive charging processes: performing a first, initial charging process of causing the bypass circuit to bypass, among the plurality of storage batteries (C1 to Cn), a storage battery having a smaller remaining charge amount until completion of charging than those of the other storage batteries, and charging at least one of the other of the plurality of storage batteries (C1 to Cn) such that a difference in remaining charge amounts among the plurality of storage batteries (C1 to Cn) until completion of the first charging process is reduced; and performing, after the first charging process, a second charging process of charging all of the plurality of storage batteries (C1 to Cn) until the charging of all of the plurality of storage batteries (C1 to Cn) is completed, performing a first, initial charging process of causing the bypass circuit to bypass, among the plurality of storage batteries (C1 to Cn), a storage battery having a smaller remaining charge amount until completion of charging than those of the other storage batteries, and charging at least one of the other of the plurality of storage batteries (C1 to Cn) such that a difference in remaining charge amounts among the plurality of storage batteries (C1 to Cn) until completion of the first charging process is reduced; and performing, after the first charging process, a second charging process of charging all of the plurality of storage batteries (C1 to Cn) until the charging of all of the plurality of storage batteries (C1 to Cn) is completed, wherein the first charging process and the second charging process are carried out such that a total voltage value of the storage battery system or a charging power limit value is maintained at a minimum allowable value allowed for the storage battery system or higher.