Your Mac shouldn't drain in your bag.
A closed Mac still wakes itself for the network and for maintenance. Sealed Sleep switches every one of those wakes off and shows what the last close cost.
Free for 30 days · macOS 14+ · Apple Silicon
Holding at 80%
Last close: 5h shut · 0% lost · hibernated
Sleeps as usual
This is the eWiz panel, rebuilt for the web. Drag the limit, flip a mode, open Settings.
A closer look
Pick a feature to see where it lives in the app. The window is clickable: switch tabs, flip a switch, try a menu bar style.
Long-term care
Park the battery near 60%
Charges up to it, runs down to it, then holds there on the adapter.
Hold
Don't charge while plugged in
Stops charging and runs on wall power. macOS can only hold this Mac at 80, 85, 90, 95%, so it charges up to the next of those first, from 80% at the lowest.
Enforcement
Stop charging before sleep
Cuts charging at sleep even when no limit is set.
Prevent idle sleep while plugged in
Keeps the Mac awake on power so the limit holds.
Always Active (keep awake with lid closed)
Work keeps running with the lid shut. AC power only by default.
Heat
Pause charging when hot
Stops charging while the battery is warm.
Max temperature
Discharge
Discharge to limit
Runs off battery until it drops back to the limit.
And the little things
Charge limit 80%, pause when warm, Power Nap off. Find My stays active.
One-tap save modes
Off, Normal or Super Saver. One tap changes a whole set of settings, so you aren't hunting through toggles.
Charging paused, battery is warm
Backs off when it runs hot
Heat is hard on a battery. Above the temperature you set, charging pauses, and the menu says why so it never looks broken.
A MagSafe light that tells the truth
Orange while it's charging, green while eWiz holds at your limit. On Macs whose MagSafe light can be controlled.
Keeping awake · screen stays on · 45m left
Keep Awake, one tap
Keep the screen on for a long download or a talk. It lets go when the timer runs out, or when you unplug, if you ask it to.
Know your charger
The watts, volts and amps your charger agreed to. If it could deliver more, eWiz says so, and the culprit is nearly always the cable.
Pause 1 hour
Pause until I resume
Charge to 100% once
Park near 60% (long-term care)
Top up before a trip
Lift the limit for one full charge, pause it for a few hours, or park the battery near 60% for long-term storage.
Will it run on your Mac?
eWiz is built for Apple Silicon MacBooks on macOS 14 Sonoma or newer, and speaks both of Apple's charging schemes, including the new one in macOS 26 Tahoe.
Apple Silicon
SupportedmacOS 14 to 26
SupportedIntel Macs
Not supportedFree for 30 days, then $2.99 once
Free trial
$0for 30 days
What's included
- Every feature unlocked
- No account needed
- No card required
License - Single Mac
$2.99one-time
Pay once and keep it forever. A replacement MacBook battery runs about $199.
What's included
- Free updates for life
- No subscription
- Move it to a new Mac
Secure checkout via Dodo Payments. Taxes are handled at checkout.
Questions people ask
- Which Macs does eWiz support?
- Apple Silicon Macs (M1 and later) on macOS 14 Sonoma or newer, including macOS 26 Tahoe. Intel Macs aren't supported. It lives in the menu bar with no Dock icon, and at idle it uses close to 0% CPU.
- Does a charge limit really make my battery last longer?
- It slows the wear. Lithium-ion batteries age fastest when they sit full and when they run hot, and a MacBook on a charger does both. Holding around 80% avoids the worst of it. It won't make an old battery new again.
- Does the limit hold while my Mac is asleep?
- Yes, if you let it. A charge limiter can't check anything while the Mac sleeps, which is how macOS sneaks back to 100% overnight. eWiz either stops charging just before sleep or keeps the Mac awake on wall power. You pick which.
- How much does eWiz cost?
- $2.99, once. There's no subscription, updates are free, and every feature is unlocked for the first 30 days so you can decide with the real thing.
- Can I move my license to another Mac?
- Yes. A license works on one Mac at a time, and you can move it to a new one once every 30 days.
- Is my data private?
- eWiz does its work on your Mac and doesn't send your usage anywhere. The website keeps only what it needs to sell you a license and support it: your account and your license.
- Why does it ask for my password?
- Charge limiting, Low Power Mode and the sleep controls need a small helper that runs as root, because macOS only lets root change them. You install it once from the menu, and you can uninstall it from Settings › General.
- Why does macOS warn me the first time I open it?
- eWiz isn't notarized by Apple yet. The first time, right-click the app in Applications and choose Open, or allow it in System Settings › Privacy & Security. After that it opens like any other app.