battery pack having a secondary battery and a circuit, charge control method of a battery pack having a secondary battery, and application device to which a battery pack is attached as a power supply

摘要

"BATTERY BLOCK WITH A SECONDARY BATTERY AND CIRCUIT, CHARGE CONTROL METHOD OF A BATTERY BLOCK AND A DEVICE APPLYING TO WHICH A BATTERY BLOCK IS ATTACHED AS A POWER SUPPLY." A battery pack having a secondary battery and a circuit controlling the charge and discharge of the secondary battery is described. The battery pack has a computer that communicates with another computer disposed on a charging device, authenticates the charging device, and calculates secondary capacity remaining battery information. When the computer has not successfully authenticated the charging device and has detected that the secondary battery has been charged in a predetermined manner, the computer forcibly sets the remaining capacity information to 'no remaining capacity'.