The audio is a phenomenal reminder that sometimes less is more: the audio is sparse yet effective.
Agree that the battery drain just didn't seem super important/strong. But I didn't mind, it really didn't affect my enjoyment.
I definitely owe a thanks to fnaf (and limbo) for the general atmosphere of the game and i'm glad it worked out. i did hope to explore the battery more but i'm just glad that it didn't affect the gameplay negatively. glad you like it!