Cargo E-Bike Downhill Regen-Braking Wattage vs Full/Cold Battery BMS Cutoff Guard

Deterministic Gravity power m*g*v*sin(grade) minus aero/rolling drag * eta_regen -> battery charge current I_chg vs Li-ion lithium-plating C-rate(T) & OVP ceiling engine (.json, .csv, .pdf) built for Grin Technologies Phaserunner, Neodrives, Stromer, Urban Arrow — zero-upload ephemeral Wasm RAM execution.