A dummy battery device for testing an electronic device having a battery cavity, which includes a connector, comprises: a main structure shaped and dimensioned so as to fit in the battery cavity of the electronic device; and a head structure configured to be detachably and moveably connected to the main structure, the head structure having contacts for electrically connecting the connector of the battery cavity once the main structure is received in the battery cavity of the of the electronic device, and cables extending therefrom, the cables being electrically connected to the contacts of the head structure.

Provided are a battery block and a secondary battery module capable of holding a plurality of battery cells stably and so reducing a load applied to a welding part of a conductive member that is connected to an electrode by welding or the like. The battery block includes a lower holding frame and a middle holding frame, one of which includes two protrusions that are in contact with an outer peripheral face of each battery cell and the other includes a pressing part that presses the outer peripheral face of the battery cell inwardly in the radial direction. Then, one of an upper holding frame and the middle holding frame includes two protrusions that are in contact with an outer peripheral face of each battery cell and the other includes a pressing part that presses the outer peripheral face of the battery cell inwardly in the radial direction.

An electric working machine including: a housing to which a battery is configured to be detachably mounted, wherein the housing is configured such that a weight unit including a weight can be mounted to the housing.

A dummy battery device for testing an electronic device having a battery cavity, which includes a connector, comprises: a main structure shaped and dimensioned so as to fit in the battery cavity of the electronic device; and a head structure configured to be detachably and moveably connected to the main structure, the head structure having contacts for electrically connecting the connector of the battery cavity once the main structure is received in the battery cavity of the of the electronic device, and cables extending therefrom, the cables being electrically connected to the contacts of the head structure.

An electronic apparatus that prevents a cable included in a coupler accommodated in an accommodating part from being caught between a battery lid and an apparatus body, with a simple construction. The electronic apparatus includes an accommodating part for accommodating a coupler, a battery lid which opens and closes an opening of the accommodating part, and a lock member including a pawl portion which restricts the coupler from being discharged from the accommodating part when the coupler has been accommodated therein. A portion defining the opening of the battery accommodating part is formed with a cutout for routing out the cable. When the coupler is accommodated and the cable has been arranged in the cutout, the pawl portion covers at least part of the cable.