Chargie for Mac

Professional battery protection for MacBooks. Extend your laptop battery lifespan by up to 4x.

Version 2026.1 • macOS 11.0+ (Big Sur or later)

Coming soon to Mac App Store

💻

Supported Platforms

🖥️

MacBook Pro

All USB-C MacBook Pro models
M1, M2, M3, M4 & Intel chips
Optimized for Retina displays

💻

MacBook Air

All USB-C MacBook Air models
Native Apple Silicon support
Lightweight & efficient

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Times Longer Battery Life
0
% Optimal Charge Level
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Watts PD Support
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Data Collected

Explore Chargie for Mac

Optimal Charging at 80%

Charge limited to 80% for maximum longevity
✨

macOS-Specific Features

🖥️

Menu Bar Icon

Quick access from menu bar. Minimize to run in background.

⚡

100W PD Support

Full Power Delivery for fast MacBook charging.

🔋

Native Battery

Accurate macOS battery monitoring and status.

🪟

Resizable Window

16:10 native layout with state restoration.

🎛️ Main Control Screen

The central hub for managing your Chargie device on Mac. View real-time power statistics, adjust charge limits, and monitor your MacBook's battery status.

  • Intuitive charge limit slider (0-100%)
  • Real-time power monitoring: Watts, Volts, Amps
  • Current battery percentage with ETA
  • Quick access to all features via tab bar
Main Control Screen
Charge Limit

Adjust limit with +/- buttons or drag slider

Battery Visual

Shows current charge level with lightning indicator

Power Stats

Real-time watts (89.35W) and connection status

Device Discovery
Connected Device

Shows Chargie C for Laptops with signal strength

Disconnect

Easily disconnect and switch devices

🔍 Device Discovery

Automatically discover and connect to your Chargie C for Laptops device via Bluetooth Low Energy. View signal strength and manage connections.

  • Automatic device scanning on plug-in
  • Signal strength indicator (dBm)
  • One-tap connect/disconnect
  • Remembers last connected device

� Smart Scheduler

Schedule your charging for each day of the week. Set target times and battery levels, and Chargie will automatically start charging to meet your schedule.

  • Weekly schedule with per-day settings
  • Base level and target level configuration
  • Estimation buffer for accurate timing
  • Grace period for flexibility
Smart Scheduler
Enable Scheduling

Toggle to activate automatic charging schedules

Day Cards

Add schedules for each day of the week

Power Delivery
Power Modes

Basic 5V, Full Power (88W), Half Power (46W)

Live Stats

Real-time voltage, current, and wattage

⚡ Power Delivery Modes

Chargie C for Laptops supports USB Power Delivery up to 100W. Choose between Full Power mode for maximum charging speed or Half Power mode for gentler charging.

  • Full Power: Up to 100W for fast charging (88W shown)
  • Half Power: ~50% wattage for battery longevity (46W)
  • Basic 5V: Standard USB charging mode
  • Real-time monitoring: 19.7V × 4.50A = 88.61W

🔋 Half Power Mode

Half Power mode reduces charging wattage to approximately 50%. Important: Chargie C for Laptops advertises 100W to your power adapter regardless of your laptop's actual charging capability. Power detection is not automatic.

  • 65W laptop + 100W adapter: Enable "Half Power mode only" in Settings to reduce power to ~50W, making your setup compatible
  • Reduced heat: Lower wattage means cooler, gentler charging
  • Battery-friendly: Slower charging extends battery lifespan
  • Settings toggle: "Half Power mode only" forces this mode permanently for power-limited devices
Half Power Mode
Half Power Selected

Blue highlight shows active mode

46.82W

~50% of Full Power's 88.61W

🔧 Hardware Limiter Mode

Configure the hardware limiter to protect your battery even when the app is disconnected. Choose between Basic Mode with fixed power threshold or Smart Mode with adaptive cutoff.

  • Basic Mode: Fixed power threshold (e.g., 7.71W cutoff)
  • Smart Mode: Adaptive power drop detection (10%)
  • Retry interval configuration
  • Power injector support for accessories
Hardware Mode
Hardware Limiter

Toggle to enable app-less protection

Operating Mode

Choose Basic or Smart detection

Settings
Allowed Charge Drop

Hysteresis to prevent on/off cycling

Buffered Discharge

Trickle flow keeps Mac awake while paused

⚙️ Advanced Settings

Fine-tune Chargie's behavior with advanced settings for power management, scheduler timing, and UI preferences.

  • Allowed Charge Drop: Buffer (3%) to prevent on/off cycling
  • Buffered Discharge: Gentle trickle for USB-C power
  • Half Power Only: Force reduced power mode
  • Landscape Mode: 16:10 window layout

📡 Connection Management

View detailed information about your connected Chargie device and manage connection settings, TX power levels, and device naming.

  • Device name and type display
  • Signal strength (RSSI) monitoring
  • TX Power level adjustment (0-3)
  • Reset, rename, and disconnect options
Connection Popup
Device Info

Chargie C for Laptops at -69 dBm

TX Power

Adjust Bluetooth transmit power (0-3)

Manual Switch
Enable Switch

Toggle to enable manual USB control

Power Control

ON/OFF buttons for direct USB power

💡 Manual Switch Mode

Use your Chargie as a Bluetooth-controlled USB power switch for lamps, fans, or other accessories. Disables charge limiting for direct power control.

  • Direct ON/OFF USB power control
  • Perfect for USB lamps and accessories
  • Disables charge limiting while active
  • Quick power toggle from the app
🔧

App Features

📊

Menu Bar Icon

+

Quick access from your Mac's menu bar.

The app adds a battery icon to your Mac's menu bar. Click to show/hide the main window. Right-click for quick actions: "Show Chargie" brings the window to front, "Quit" exits the app. The icon updates to show a charging bolt when your device is connected and charging.

⚡

Hardware Limiter

+

Works even with app closed or Mac asleep.

Basic Mode: Fixed power threshold cutoff.
Smart Mode: Detects charging completion by power drop percentage.
Off: Disable hardware limiter entirely. Hardware Limiter works independently of your Mac, ensuring protection even when the app isn't running.

🔋

Native Battery Monitoring

+

Accurate macOS battery readings.

Chargie uses native macOS APIs to read your MacBook's battery state accurately. This provides reliable battery level and charging status detection. The app includes smart filtering to handle occasional system glitches during sleep/wake transitions.

⏰

Smart Scheduler

+

Schedule charging for your daily routine.

Set different schedules for each day of the week. Configure overnight base level (minimum charge) and top-up level (target for morning). Chargie calculates optimal start time. Background task scheduler ensures reliability even when app is minimized.

🪟

Window State Restoration

+

Remembers window size and position.

Chargie remembers your window size and position. On next launch, the window restores to exactly where you left it. Supports both portrait and landscape layouts with native macOS window controls.

🔌

Power Delivery Modes

+

Full Power or Half Power charging.

Full Power: Maximum wattage for fast charging (up to 100W). Negotiates the highest available power with your adapter.
Basic 5V: Standard USB charging without Power Delivery.
Tap the power icon on the main screen to access the Charging Power popup and switch modes.

⚡

Half Power Mode

+

Essential for 65W laptops with 100W adapters.

Why it matters: Chargie C for Laptops advertises 100W to your power adapter regardless of your laptop's actual charging capability. Power detection is not automatic.

65W laptop + 100W adapter? Enable "Half Power mode only" in Settings. This reduces negotiated power to ~50W (e.g., 46W), making your lower-power laptop compatible with your higher-wattage adapter.

How it works: Half Power reduces wattage to approximately 50% of Full Power. Example: Full Power at 88W → Half Power at 46W.

Additional benefits: Lower heat, reduced battery stress, extended lifespan. Great for overnight charging.

🚀

Quick Setup

1

Hardware Connection

Chargie C for Laptops INPUT side → USB-C Power Adapter (≥60W recommended) OUTPUT side → MacBook USB-C port
2

Install App

Requires macOS 11.0+ (Big Sur or later)
Coming soon to Mac App Store

3

Grant Permissions

Allow Bluetooth access when prompted. Chargie uses Bluetooth Low Energy to communicate with the hardware device. No location permission required on macOS.

4

Set Charge Limit

Adjust the charge limit slider to your desired level. 80% recommended for maximum battery longevity on laptops that stay plugged in often.

💡
Pro Tip: For MacBooks that stay plugged in most of the time, set your charge limit to 60-80%. This significantly extends battery lifespan by avoiding constant high-charge states.
🔌

Hardware Setup

Chargie C for Laptops setup

Chargie C for Laptops
INPUT → USB-C Power Adapter | OUTPUT → MacBook

Power Requirements

  • USB-C Power Adapter: 60W minimum (96W+ recommended for Pro models)
  • Supports USB Power Delivery (PD) up to 100W
  • Works with Apple and third-party USB-C adapters
  • LED indicator shows power state (green = active)
🍎

macOS-Specific Notes

🔋

Battery Reading

Chargie uses native macOS system APIs to read your battery state accurately. The app includes smart filtering to handle occasional glitches during sleep/wake transitions automatically.

🌡️

Temperature Monitoring

Real-time battery temperature monitoring is only available on iOS devices. On macOS, temperature-based charging pause is not available due to system limitations.

🔒

Privacy & Security

  • No data collection - Your data stays on device
  • Local Bluetooth only - No cloud, no internet required
  • No tracking - Zero analytics or telemetry
  • No account needed - Just install and use
❓

Troubleshooting

App won't find my Chargie device▼

1. Ensure Bluetooth is enabled in System Settings
2. Check Chargie is plugged into power (LED should be lit)
3. Try unplugging and re-plugging the Chargie device
4. Quit and reopen the Chargie app
5. Check System Settings → Privacy & Security → Bluetooth - ensure Chargie has access

App doesn't show in menu bar▼

1. The menu bar icon appears after connecting to a device
2. Check if you have too many menu bar items (some may be hidden)
3. Try quitting and reopening the app
4. Check System Settings → Control Center → Menu Bar Only for icon visibility

Charging doesn't stop at my limit▼

1. Ensure app is running (check Dock or menu bar)
2. Check Bluetooth connection is active in the Scan tab
3. Enable Hardware Limiter for protection even when app is closed
4. Verify Chargie firmware is current
5. Try reconnecting to the device

Battery level shows incorrect percentage▼

1. macOS IOKit can occasionally return garbage data during system transitions
2. Chargie filters these automatically but some may slip through
3. Wait a few seconds - the value should correct itself
4. If persistent, try restarting the app
5. SMC reset may help in extreme cases

App loses connection after Mac sleeps▼

1. This is normal - Bluetooth connections are suspended during sleep
2. Chargie automatically reconnects when Mac wakes
3. Check System Settings → Battery → Options → "Prevent automatic sleeping when the display is off"
4. Hardware Limiter continues protecting even during sleep

Power stats show 0W while charging▼

1. Ensure you're using a USB-C PD (Power Delivery) adapter
2. Check Full Power mode is selected in Power settings
3. Some low-wattage adapters may not negotiate PD properly
4. Try a different USB-C cable (must support PD)
5. Minimum 60W adapter recommended for MacBooks

📬

Need Help?

📧
Email

[email protected]
🌐
Website

chargie.org
❓
FAQ

Common questions
🔧
Guides

Troubleshooting
📱
iPhone or iPad? We've got you covered! Check out the iOS app guide →
🤖
Android User? Chargie works on Android too! Check out the Android app guide →

Last Updated: January 28, 2026