Two Stores, One Power Pack — calculation scripts and working data

Python scripts and their console outputs that reproduce every derived number and figure in Two Stores, One Power Pack: The Physics of Battery–Supercapacitor Hybridisation, the Patented Hybrid Power Pack Architecture, and the Applications Where It Delivers Most (doi:10.5281/zenodo.22958077): the engine-cranking duty cycles (form factor 5.48–8.66, 96.7–98.7 % ideal reduction in battery Joule heat, break-even resistance 0.85–5.12 mΩ) and the WLTC Class 3b drive-cycle model (whole-cycle form factor 2.12; 53–89 % by phase), plus Figures 1–4.

Results are engineering calculations from stated assumptions and a published regulatory duty cycle, not measurements of an HPP product. The WLTC speed trace comes from the JRC wltp package and is not redistributed. Code under MIT; outputs and figures under CC BY 4.0. Scripts were prepared with AI-assisted tools; the author reviewed them, ran them and checked every output against the paper.