A charging apparatus includes a cooling fan; a battery temperature detecting unit; and a control unit configured to determine presence or non-presence of cooling effect by the cooling fan, and to control a charging current based on an output of the battery temperature detecting unit. One embodiment provides a first layer, a second layer, and a base layer. At least one display displays a plurality of reels with symbols. The sheet is formed of hemostatic fabric formed into a tubular configuration having opposing first and second ends. That offset is generated by capturing a value representing the midpoint when a signal is first applied. After submersion, the basket arm rotates the basket in the solution to flow the hydrolysis solution into contact with the assembled devices therein.