This thesis presents the design and testing of a roadside deployable fire suppression system to aid first responders to deal with fires in electric vehicles. with electric vehicles becoming more prominent in the automobile industry, thermal runaway has become a problem that must be dealt with due to the risk to passengers, infrastructure, and transportation services. This thesis gives a review of the Li ion battery Thermal runaway and how it occurs, and the current methods designed to control the phenomena. The thesis progresses on to propose a new design for a fire suppression system that addresses current performance gaps in existing systems. The design process involved conceptualising, modelling, and simulating various components and assemblies of the deployable system ang goes on to propose a design for a container for the transportation of battery packs. Methods such as Finite Element Analysis (FEA) to optimize and test the design as utilised. The design has succeeded in meeting all requirements put forth in the design rationale. Finite element analysis has shown that the system can manage the stresses placed during service while also allowing for weight reduction. A final design was reached from three concepts. The findings of this thesis show the feasibility of the design and shows its up take in the market should place in the market facilitate passenger safety enhancement as well as protection of critical national infrastructure resulting from roadside fires in Electric Vehicles.