Low battery warnings are a familiar part of everyday device use, so the sound travelled easily from phones and laptops into short-form video and meme edits. Creators began using the brief beep as shorthand for exhaustion, failure or a joke running out of steam, rather than as a literal notification. Because almost everyone recognises it instantly, it needs no caption or setup to land. That shared familiarity, plus its very short length, is why it remains a handy reaction sound for edits about tired characters, dead phones and plans that suddenly stop.