> From the damage that was caused, it sounds like there are no “hardware” fuses built into this system either. That alone should be cause for regulators to take

> From the damage that was caused, it sounds like there are no “hardware” fuses built into this system either. That alone should be cause for regulators to take the product off the market. No, it just sounds like inverter, to which there are two devices connected, one which suddenly draws a lot of current (like starting power tool, possibly the one pictured in the article) and an "electronic device" with switching power supply. When the large current draw happens, the inverter tries to compensate which results in a lot of power transmitted over higher frequency (several tens kilohertz rather than usual 50 Hz). That higher freq bypasses input cap and fries switching power supply. Matthias Wandel did a video about his own problems with portable battery setup, which did the same: https://www.youtube.com/watch?v=c1QSn3i_IEo https://www.youtube.com/watch?v=c1QSn3i_IEo. This inverter is just not suitable for powering different devices. ISTM those different "offgrid" technologies are just not ready for prod.