RECHARGEABLE ENERGY STORAGE SYSTEM

A method of manufacturing an electrical energy storage system includes procuring a sheet metal blank. The method also includes bending the sheet metal blank to form a tray having at least a first wall, a second wall, and a bottom, with the first wall extending generally perpendicularly from the bottom and the second wall extending generally perpendicularly from the bottom. A plurality of electrical storage elements are placed in the interior of the tray. A beam may pass through an interior of the tray and may be affixed to a first structural element and a second structural element of a vehicle.