Abstract: A battery pack of an electric power tool comprises ten lithium-ion cells. The ten lithium-ion cells are connected in series. Each lithium-ion cell has a diameter equal to or less than 18 millimeters, a length equal to or less than 65 millimeters, and an internal resistance equal to or less than 30 milliohms. Because the battery pack has a high voltage in operation and is therefore able to supply large current, the battery pack is preferably configured incapable of being used in a conventional electric power tool that cannot operate under such a large current.

Abstract: To provide a pharmaceutical product or food which has an excellent fat-accumulation-inhibiting activity and/or fat-metabolism-improving activity and which is effective for inhibition or improvement of obesity, fatty liver, etc. The present invention provides an agent for preventing or ameliorating obesity containing, as an active ingredient, cells of a lactic acid bacterium belonging to the genus Pediococcus, a cell culture thereof, or an extract of any of these.

Abstract: An electric power tool includes a tool element, an electric motor, a rechargeable battery, a fuel battery, a state measuring unit, and a control unit. The electric motor receives power supply to drive the tool element. The rechargeable battery is electrically connected to the electric motor and supplies power to the electric motor. The fuel battery is electrically connected to the rechargeable battery and charges the rechargeable battery. The state measuring unit measures a state of the rechargeable battery. The control unit controls charging of the rechargeable battery by the fuel battery at least based on the state of the rechargeable battery measured by the state measuring unit.