A battery location or battery-puzzle solution has not been verified in the collected Divine Frequency material. The keyword alone does not identify a specific item, level, or build. References to lantern fuel and Emergency Light do not establish the location of a battery. This is a short research-status page, not a pickup walkthrough.
What the light references actually establish
An older demo discussion mentions lantern fuel as a resource. The November 2023 developer patch also adjusts the radius of Emergency Light. Neither source connects that information to a battery item or recharge sequence. Converting those mentions into battery-management instructions would answer a different question with unsupported assumptions.
Why a location is not listed
The collected sources provide no corroborated pickup-and-use sequence for a battery. They do not identify the relevant room or show a successful puzzle interaction. The absence of an answer in those sources is not proof that the item does not exist. It means this page cannot responsibly tell you where to go or what to enter.
Identify the exact puzzle before using another guide
A useful match would need the game build, area, and item's displayed name. A route for an older Doom conversion would not by itself answer a question about the standalone demo. The available research does not supply that match for this keyword. For a different documented opening obstacle, the walkthrough covers the historical broken-gun and repair-item lesson.
Sources
Official screenshots · Steam media gallery · © Abraxaes and respective rights holders. Material statement.