Battery storage apparatus with lock portion to secure battery

A battery storage apparatus comprising:

• a storage portion including
• an opening through which a battery is configured to be inserted, the battery including a battery case and battery cells housed in the battery case, and
• a storage space in which the battery, which is inserted through the opening, is stored in an attachable and detachable manner, wherein the battery is configured to be held in a fixed manner at a holding position in the storage space;
• a portable portion that is configured to support the battery and move in the storage space between the holding position and an insertion and removal position that is different from the holding position;
• and
• a lock portion that includes an abutment surface configured to abut against the battery stored in the storage portion and that is switchable between a locked state, in which the battery is held in a fixed manner relative to the storage portion by the abutment surface abutting against the battery, and an unlocked state, in which the battery is released from being held in the fixed manner relative to the storage portion by the abutment surface being separated from the battery
• wherein
• the lock portion is switched from the unlocked state to the locked state in conjunction with movement of the portable portion from the insertion and removal position to the holding position, and/or is switched from the locked state to the unlocked state in conjunction with movement of the portable portion from the holding position to the insertion and removal position.