🔋 Li-ion Battery Degradation: SEI Growth, Cycle and Calendar Ageing Lab

Semi-empirical Li-ion ageing model with a Blender 5.2 cutaway cell, SEI-coated graphite particle and 48-cell pack map: calendar loss k(T,SOC)·sqrt(t) with Arrhenius temperature dependence, cycle fade versus depth and C-rate, cold-charge lithium plating, resistance rise and EV range over 5-20 years. Experiments sweep temperature and find the charge limit that keeps a target capacity; four independent numerical checks run on load.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install