[doggodaddo78]

Batteries burn up, especially NMC Li ion.

Battery rooms were traditionally separate, used lead acid batteries, were surrounded by thicker walls, and equipped with FM200, just like main datacenter floors. They were typically placed near the transfer and PDU switchgear. I wouldn't put anything more flammable than LiFePO4 in a battery room, much less anywhere near a server.

It's people who decide to throw away conventions, common sense, and building codes because "they know better" who get into trouble.

I suspect this datacenter company could be sued into oblivion.