BatteryGuard is a lightweight macOS menu bar app for people who want to be more intentional about their Mac’s battery health. It complements Apple’s built-in battery features with reminders to plug in below 20% and unplug above 80%, helping you spend less time at extreme charge levels. Unlike more complex battery utilities, BatteryGuard is intentionally minimal. It lives in the menu bar and focuses on one job: giving you timely nudges that make healthier charging habits easier to maintain.