Glossary · 用語
Low Power Mode.
Low Power Mode is a macOS setting that reduces processor speed, display brightness, and background activity to extend battery life. Available on MacBooks running macOS Monterey or later.
Find it in System Settings → Battery → the Energy Mode menus. macOS keeps separate settings for On battery and On power adapter, so you can stay in High Power when plugged in and only drop into Low Power on the move.
Sequoia 15.1 added a third use case for Low Power Mode — reducing fan noise during quiet work — and surfaced it in Control Center. The trade-off stays the same: longer runtime, a slight latency cost on app launch, a dimmer screen.
Low Power Mode affects power use; charge limiting affects how the battery is charged. They’re complementary, not competing. Pair LPM with Sensei’s alert presets so longer battery life doesn’t mean later warnings. Heavy customizers can edit each tier’s threshold under custom thresholds.