We’ve seen various types of non-contact voltage and current sensing over the years. We’ve even seen biological voltmeters lately.

Mount a cheap Harbor Freight non-contact thermometer on a 3D printer ... Don’t expect the results you would get from a real thermal sensor. If you want that, you may have to build it yourself ...

BESS fires can start from thermal runaway, where one cell failure can trigger a cascade of overheating, leading to fires that ...