[riversflow]

Sorry to hear that, and good luck. Additionally I apologize for the undue cynicism, but as a flashlight enthusiast I've been frustrated with this problem for years and years. The form factor of a battery charger and USB powerbrick/supply would be so nice! It's massively annoying to me that I own many 18650s and still need to buy and replace power banks.

Worse, it seems like the manufacturers best suited to make the product I desire(anker and nitecore) are directly incentivized by obsolescence to not ever make it. The best thing I've found so far is the Nitecore LC10, but it was discontinued. :(

I sort of suspected that it might be the case of safety bodies getting in the way. I really hope you make progress with UL. I'm rooting for you. There should be a way of overcoming this problem.