The aim of this thesis was to design and modularize a trolley that will be used to mobilize a scissor lift for National Electric Vehicle Sweden AB (NEVS). During a pilot study, it was decided that the product would be modularized in order to fulfill the stakeholder’s different requests with minimal change in the product. Thus, will the trolley in this thesis be designed with modularization in mind NEVS is one of many companies who are developing a fully electrical car with a goal of driving range close to that of a car with a combustion engine. This requires the installation and removal of the power source which is under development, as NEVS tries to find the optimal energy storage for the electrical car.  The method used to develop a modularized product, was modular function deployment (MFD) which contains five-steps. These five steps in the MFD process are; clarify customer requirement, select technical solution, module indication matrix, evaluate concepts, and improve the modules. The heart of MFD is the module indication matrix (MIM) which is done by screening the generated sub-functions against several modular drivers. MFD helps the design engineer to develop a good and robust product structure. The modular drivers in MIM can be company specific or generic for the users.   Another helpful method to develop and design a product is a generic product development, in which the design engineer goes through several steps; e.g. project planning, identification of customer needs, specifies a product specification, concept generation and selection, and concept improvement. These two methods are very like one another and was therefore combined during this thesis since several of the steps relates to one another. The combination of these methods resulted in a modularized product containing; trolley, scissor lift, floating table, jig, positioning indicator, stabilizers, and a diagnostic table.  Whilst this thesis describes the modularisation and development of the mentioned trolley. The modules had different drivers that made them modules; i.e. the trolley had the drivers’ common unit and technical specification whereas the scissor lift was chosen to be a black box since it was a standardized product from a subcontractor.  This thesis resulted in that the end user can choose either a manually operated scissor lift or a power assisted scissor lift depending on their needs. Depending on which type of scissor lift is chosen, does the components of the trolley described in this thesis differ.