Flash device system

A flash device for photographic purposes comprising:

• a flash holder having a battery accommodating cavity formed therein;
• and
• a flash housing hinged onto the flash holder;
• wherein the battery accommodating cavity comprises:
• electrical access contacts;
• a battery locking protruding element;
• and
• a battery locking cavity,
• wherein the battery locking protruding element and the battery locking cavity are arranged on opposite inner side walls of the battery accommodating cavity.

A battery for a flash device for photographic purposes comprising:

• electric contacts;
• and
• a cavity locking protruding element and a cavity locking cavity for engagement with a corresponding battery locking protruding element and battery locking cavity in a battery accommodating cavity,
• wherein two of the electric contacts of the battery are arranged to switch on the battery when put in contact with corresponding electric contacts of a battery accommodating cavity.

A battery charger for a battery for a flash device for photographic purposes comprising:

• a battery accommodating cavity comprising:
• electric access contacts;
• and
• a battery locking protruding element and a battery locking cavity for engagement with a corresponding cavity locking protruding element and cavity locking cavity on a battery, wherein the battery locking protruding element and the battery locking cavity are arranged on opposite inner side walls of the battery accommodating cavity,
• wherein two of the electric contacts of the battery accommodating cavity are arranged to switch on a battery placed in the battery accommodating cavity when put in contact with the corresponding electric contacts of the battery.