See what your charger is actually giving you.
Your adapter says 96W. Your Mac might be pulling 42. Batt Juice sits in your menu bar and reports the real measured wattage crossing the cable — plus live battery flow, and the health numbers macOS buries three menus deep.
One email when it ships. Nothing else, ever. (The app itself can’t even reach the network — macOS enforces it.)
Measured, not advertised
Reads the adapter's real voltage and current from the SMC. If a thin cable or a hub is quietly capping you at 15W, you'll see it immediately.
Health without the digging
Maximum capacity in mAh, cycle count, and condition — the numbers behind the one percentage System Settings deigns to show you.
Instant, not eventual
Hooks the system power notification, so plugging in updates the icon that moment. No polling lag, no stale reading.
Alerts that matter
Low battery at your threshold, fully charged, running hot — and the one nothing else has: your charger quietly can't keep up.
A day of history
The power graph spans 2 minutes to 24 hours with charge overlaid, survives restarts, and lives in a Notification Center widget too.
Native and tiny
Plain Swift. No Electron, no helper daemon, no analytics, no account — and no network permission at all. macOS enforces that, so “nothing leaves your Mac” is a fact, not a promise.