I wonder if fire safety code (either in NYC, NY State, or nationally) has caught up with some sort of specific regulation for additional fire safety when you have N amount of watt-hours of lithium ion battery storage contained in X amount of square feet of retail space with Y type of fire suppression/detection systems. The same general concept as why you can't take above a 99Wh battery on an airplane as an individual unit, but extended to something like the Apple Store or the laptop display section in a Best Buy.

The closest thing I've seen is a big push from the NYC government to get people to stop charging their sketchy ebike/scooter battery packs indoors in hallways and apartments, which has caused more than a few fires.

https://www.google.com/search?client=firefox-b-d&q=nyc+ebike...

They don't use fire extinguishers for lithium battery fires though (as the article mentioned: submerging it in special sand).

I wonder if it would actually be a negative if a member of the public grabbed a visible extinguisher during a battery fire?