Article 320 of NFPA 70E provides safety requirements for working on and around storage batteries. As with other Articles in this standard, it takes a concept approach rather than a highly detailed, prescriptive approach. This fact becomes clear at the outset, when you read the Informational Note under the Scope [320.1]. It lists not just two or three other standards, but eleven.
Safety Requirements for Batteries and Battery Rooms
Do you know how to prevent hazards, such as getting burned by acid, when in a battery room?