Electric vehicle batteries (EVBs) are crucial components of electric vehicles (EVs). They also account for a major share of the initial prices of EVs, inhibiting the diffusion of green mobility solutions. After having been removed from the vehicles due to an increased internal resistance or an insufficient capacity to store energy, EVBs may be recycled, refabricated, or reused to comply with legal regulations and to generate additional business returns. Making an informed decision on the further application of a used EVB presupposes in-depth product data, operating instructions, and status data on the battery. In this paper, a domain-specific modeling language is designed to specify the data structures required to describe EVBs. In the spirit of design research, the modeling language's validity and utility are demonstrated by modeling a typical EVB. In future research, the modeling language's meta-model can be extended and made configurable to inform various afterlife scenarios.