| abstract |
(57) [Problem] To provide a battery cleaner capable of stably and surely cooling a battery pack that generates heat, and a battery pack used therefor. A battery cleaner includes a battery pack (3) in which a plurality of secondary batteries (4) are bundled and an electric wire is attached, a battery pack storage section (2) in which the battery pack is stored, and a battery pack. A motor (7) driven by the motor, a fan (6) driven by the motor to suck air from outside, a dust cup (9) for separating and storing dust and the like in the air sucked by the fan, and the battery inside. A housing for accommodating a pack housing, a motor and a fan, wherein a heat storage material (32) is provided in the battery pack so as to be able to conduct heat with the secondary battery. . |