Mac menu bar app
See when your Mac reports less than your charger’s rating.
Enter your charger’s printed rating and compare it with the capacity your Mac reports. Then inspect battery and USB details.
What the price covers Spot when reported charger capacity falls below the rating you enter.
When this app is available, check its App Store page for purchase and refund information before you buy.
Requires macOS 14.0 or later
What it does
Check the charger and USB connection
Check the charger, battery, and USB connection.
See reported charger wattage and adapter name, plus battery details such as cycle count and health condition. USB values describe link ceilings or current allocations, not measured throughput.
- Keep up to 60 charger readingsRecent charger history stays in memory and resets when you quit. A failed power read leaves a gap with a retry action.
Inside the app
More screenshots
Who it is for
For checking chargers and USB devices
For comparing a charger’s printed rating with the capacity your Mac reports.
Privacy and support
Hardware readings stay local, with no account or analytics.
App privacy policy · Get help with PortSense · Email or report an issue
Good to know
Reported capacity and missing readings
Does it measure power at the wall?
No. PortSense reports charger capacity, not electricity drawn from the wall. A cable, dock, or shared charger can limit available power.
Will every accessory show every field?
The system may not expose every field for your computer or accessory; missing fields appear as unavailable.