NOVELTY - The upper and lower battery cell trays (100, 200) of respective battery cell sub-assemblies are provided with multiple lower receptacles, and upper receptacles. Multiple battery cells (300) are restrained by the lower receptacles of the lower cell tray and the upper receptacles of the upper cell tray. Each cell is located in a corresponding receptacle and the battery cells are spaced from one another to allow for air flow between battery cells. Multiple straps are provided for securing the battery cells together in the lower and upper receptacles.    USE - Battery module of battery assembly (claimed) for automobile such as electric vehicle for monitoring temperature.    ADVANTAGE - A battery module having upper and lower trays may serve to restrain motion in 3 rotational directions and 3 translational directions of battery cells that are held between the trays. A loosely tensioned strap is wrapped around battery cells that are located in receptacles of a cell tray for a user to conveniently carry the cells together. The straps that are both tightly tensioned and loosely tensioned are used to firmly secure a cluster of battery cells together while providing a user with the ability to carry the cluster of battery cells together with relative ease. The loosely tensioned straps are positioned symmetrically with respect to one another so that a cluster of battery cells can be balanced when carried. The cell trays have guide features that serve to securely position tensioned straps such that slippage of the straps is minimized. Bundling of cells can serve to mitigate cell swelling by compression, save volumetric space, and/or decrease the required number of contact terminals. The cooling can occur between each individual cell, and the risk in the event of an undesirable occurrence can be minimized since the cells are spaced apart from one another. A single cell tray can include additional support features that provide attachment and/or harnessing elements that function to secure battery cells to appropriate regions of the cell tray. Thermal sensing strips are easily inserted into and/or removed from a string of thermal sensing strips. Various assembly procedures can be more easily carried out such as by welding, brazing and/or fastening of cell interconnects to individual battery cells when battery cells are less prone to movement relative to one another. The battery cells held together by a tightly tensioned strap can be more easily transported as a group.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for battery assembly.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a battery assembly.    Battery assembly (10)    Upper battery cell tray (100)    Lower battery cell tray (200)    Battery cell (300)    Opening (350)