The main objective of the research and development (R&D) project entitled "Converte" is to convert combustion vehicles in public fleets to electric traction. The project consists of designing, implementing and testing four systems for converting combustion vehicles to electric traction: two with national technology and two with imported technology (powertrain), intended for light vehicles with an effective weight of up to 1.5 tons. Each vehicle was equipped with different battery sizes to assess the feasibility of using smaller and consequently more economical battery banks.