In general no.
For flooded cell battery rooms, put a hydrogen detector connected to an exhaust fan to ensure the levels of hydrogen don't get to hazardous levels.
Does battery rooms with chargers consider to be Hazardous (Classified) Locations? Some engineers thinks we need to use explosion proof devices such light fixtures. Any thoughts? , thanks
I agree and Section 480.9(A) addresses the issue. As a general statement, an installation consistent with Art 480 does not need to be classified and one not consistent with the Article could explode even if it were classified.