Utilizing controllable switches in battery systems can provide flexible and dynamic configurations for batteries at the cell, bank, and pack levels. The reconfigurable battery packs (RBPs) enable optimization of connection configurations with respect to the overall performance, safety, and lifetime. Despite multiple topologies and control strategies previously proposed in the literature, the quantitative analysis and systematic performance evaluation of RBP dynamics remain challenging due to the absence of a mathematical model at the pack level. To bridge this gap, this work introduces a unifi...