The purpose of this container is to provide mobile power supply backup for onsite jobs. It is a 40ft container with densely packed electrical equipment like inverters, batteries & ACB. The objective of this analysis is to find the best ventilation system that will provide adequate ventilation to the container & maintain a favorable condition for the functioning of both the men and equipment. Based on this requirement, a series of CFD analyses was carried out by varying the location/type/size of the fresh air & exhaust fans to identify the best ventilation system for the job.