The present invention relates to a battery connection with an anti-locking system including a casing for connection of the electric cables furnished with a lever articulated between a locked position and an unlocked position. The connection has an anti-locking system preventing the lowering of the lever and hence the locking of the connection on the battery terminal, if the interlocking is not correctly achieved. The anti-locking system includes a detector that can be moved between two configurations which correspond to the locked position and to the unlocked position of the connection and is suitable, in the configuration corresponding to the locked position, for pressing against a surface of the battery containing the battery terminal.