Patent ID: 8339095

Claim:
A charging device on which a battery pack including a memory is connected, comprising: a detecting unit that detects charged state data indicating a charged state of the battery pack based on a charging current supplied to the battery pack, a charging voltage supplied to the battery pack, and a first data table; a generating unit that generates a second data table by using characteristics data stored in the memory; and a control unit that determines whether the first data table is stored in the charging device by using identification data of the battery pack obtained from the memory, wherein the control unit controls the generating unit to generate the second data table based on whether the first data table is stored in the charging device, the detecting unit detects charged state data based on a charging current supplied to the battery pack, a charging voltage supplied to the battery pack, and the second data table if the first data table is not stored in the charging device and the first data table includes a data table associated with a charging current, a charging voltage, and a charged state data.