A cell housing includes a first half section having a longitudinal side having a first end and a second end. A first lateral side extends perpendicularly to the longitudinal side from the first end. The first lateral side has a first tongue. A second lateral side extends perpendicularly to the longitudinal side from the second end. The second lateral side has a first groove. A second half section is identical to the first half section. The first and second half sections are coupled to each other such that the first tongue of the first half section is inserted into the first groove of the second half section and the first tongue of the second half section is inserted into the first groove of the first half section, forming a closed perimeter.