Scream Cannister is from Monster's Inc. where screams are used as energy for the world of Mike Wazowski and James Sullivan. Got the idea from Monster's Inc. and using it as a battery case for two18650 batteries. The top cap is designed to have a screw to lock in the top cap to the body itself and there is now clearance space so that the battery will not rattle inside to prevent damage on the battery. Made this battery case for my batteries. Try to make money out of the idea I got.