SlimBatteryMonitor for Mac

App overview

SlimBatteryMonitor runs automatically at startup and sits in your menu bar so you always know how much battery life remains. It can show a reminder when your charge falls below a set threshold, and the compact battery icon is configurable in color and shape (rounded or square) to match your preferences.

Appearance and alerts

• Choose whether the indicator is visible only when the battery drops below a chosen level.
• Pick from different colors to reflect remaining charge at a glance.
• Select the icon style you prefer (rounded or square).

Limitations

Although it provides clear status and alerts, SlimBatteryMonitor does not include tools to extend or optimize battery life based on your current tasks or usage patterns. If you need active power-management suggestions, you’ll want a companion utility that adjusts settings for different workloads.

Best use case

This utility is especially handy for people who frequently travel or work away from power outlets and need an unobtrusive, always-on battery readout in the menu bar.

Recent updates

• Integrated the Sparkle framework so the app can check for and install updates automatically.
• Added adjustable sliders to customize the warning panel thresholds and color levels.
• Fixed issues with horizontal text rendering on images for macOS 10.6 and later.
• Built as a universal binary supporting 32-bit PowerPC Macs as well as 32- and 64-bit Intel machines.

Suggested alternative

CheatSheet — free option that can be explored if you want a different approach or additional features.