The BMW i3 is primarily an electric vehicle (EV) designed to operate on electric power stored in its high-voltage lithium-ion battery pack. However, some versions of the BMW i3 are available with an optional range extender, often referred to as the “REx” model. The range extender is a small internal combustion engine that serves as a generator to produce electricity, providing additional range when the battery is depleted. Here’s how it works: Electric-Only Operation: In […]