LabBench grew to 9 tools, and I shipped a second product

A few weeks ago I turned four free browser-based engineering demos into LabBench — a suite people could actually use, not just look at. This week it grew again, and I also launched something completely separate. EV Battery Management Simulator — a 4-cell pack model with real coulomb-counted state of charge, an OCV + IR-drop voltage curve, a lumped thermal model that trips a simulated BMS above 70°C, and passive cell balancing you can actually watch converge over time. Smart Energy Meter Dashboar