Edgeless Safety Cube

The Weighted Storage Ball is a testing element used in the Aperture Science Enrichment Center several centuries after Portal, and slated to appear in Portal 2.

Overview
The Weighted Storage Ball serves the same purpose to that of the Weighted Storage Cube, thus opening doors or activate platforms, except it must be placed in a bucket instead of on a button.

Behind the scenes
The Portal 2 Weighted Storage Ball may be related to the "Weighted Storage Ball" seen in the advanced Test Chamber 17 in Portal and reusing the Personality Core model seen at the end of the game, but it has yet to be confirmed.

List of appearances

 * Portal 2