Watt draw at a glance
See discharge and charge rates update every second so you immediately notice spikes from browsers, VMs, or rogue background jobs.
Menu bar power monitor
Mac Battery Guru
See real-time discharge, charge, and health data so you can squeeze the maximum runtime out of any MacBook.
- Live watt and milliamp draw right in the menu bar.
- Surface runaway apps or discrete GPU spikes instantly.
- Track battery health, cycles, and temperature over time.
Why Mac owners run Battery Guru
Know the battery’s condition
Monitor cycle count, original vs. current capacity, and temperature to understand how your battery is aging.
Catch runaway processes
Identify when the discrete GPU or a misbehaving tab kicks in so you can shut it down before the fans spin up.
Use Battery Guru to stay ahead of drain
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1
Install & pin in the menu bar
Launch the app once and choose Keep in Menu Bar so your live watt reading is always visible.
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2
Watch discharge trends
Typical idle draw is a handful of watts. If you see sustained spikes, look for the process in Activity Monitor.
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3
Check health insights
Battery Guru shows cycle count, original capacity, and temperature so you know when it’s time to recalibrate or replace.
Power users’ playbook
Battery usage is never a smooth glide from 100% to 0. The app reveals the spikes you normally miss so you can respond before your battery is toast mid-flight.
- Spot heavy tabs or runaway processes using more than 5–7× normal power draw.
- See when macOS locks the discrete GPU on, wasting charge when you only need the integrated chip.
- Monitor charge rate so you know how long it will take to refuel before heading out.
Pair Battery Guru with our deep dive, The new MBP power efficiency is impressive, to understand real-world discharge profiles and how we tuned the app.
Downloads & uninstall
- Download: BatteryGuru.zip
- Mac App Store: macOS App Store listing
- Uninstall: Quit the app, then drag Battery Guru.app from Applications to the Trash.
Need help tuning a workflow?
Share your Mac model, macOS version, and what you’re seeing in Battery Guru. We’ll help you interpret the numbers or track down offending apps.