Introduction

In battery electric vehicles (BEVs), lithium-ion batteries (LIBs) are currently the most important battery technology. Over the lifetime of a LIB, the battery’s energy content, i.e., capacity, which determines the vehicle’s range decreases due to battery aging depending on its usage and environmental conditions. This chapter describes limitations of State of the Art methods for LIB state of heath (SOH) forecasting and derives four research questions.