BatteryBoi

BatteryBoi replaces macOS's vague battery percentage with a proper menu bar readout — remaining time in hours and minutes, charge history, and battery status for every paired Bluetooth accessory in one place.

Why it makes the list

Apple's own battery menu tells you a percentage and makes you guess the rest. BatteryBoi does the math for you and extends it to your AirPods, mouse, and keyboard, so you always know what's about to die before it does.

Standout features

• Time remaining, not just percentage — see hours and minutes at a glance
• Bluetooth accessory tracking — battery levels for AirPods, trackpads, and keyboards
• Charging alerts — get notified when a device is full or running low
• Native menu bar app — lightweight, no background bloat
• Open source — inspect or extend the Swift codebase yourself

Pricing

Completely free and open source (GPL v3).