Consumer demand for Electric Vehicles (EVs) is increasing due to improving performance and affordability. However, EV manufacturers are struggling to meet this rise in demand. A key bottleneck is supply from a nascent EV battery supply chain that is new and developing. In this paper, we propose robotic work cell design for fast and reliable assembly of EV battery modules, at scale, to reduce this demand-supply gap. INDEX TERMS Automation, digital simulation, digital twin, electric vehicles, EV batteries, industrial robots, lithium ion batteries, robots, robotic assembly. I. INTRODUCTION A. EV DEMAND IS UP Even though electric vehicles(EVs) account for only a small percentage of all vehicle sales today, there has been a steady and sharp increase in consumer adoption. According to the 2018 IEA Global Electric Vehicle Outlook, new registrations of EVs increased from 111,320 in 2013 to 750,490 in 2017, a 575 percent increase [1]. A 2018 survey by AAA found that consumer interest in electric vehicles is increasing, with 20 percent or 50 million Americans likely to go electric for their next vehicle purchase, up from 15 percent in 2017 [2]. This increase in acceptance has been supported in part by incentives for the adoption of electric vehicles in several countries. These incentives coupled with the dramatic fall in battery prices (Fig. 1) and increase in driving range per charge, has resulted in increasing acceptance of EVs by consumers, as reflected in their rising demand (Fig. 2).