Information Technology Reference
In-Depth Information
9.6
When the remaining battery power reaches 5 percent, MacBook Air warns you that it's running on reserve power.
5. Click OK.
6. Close all your running documents and applications.
7. Either turn MacBook Air off or allow it to switch into sleep mode.
8. Leave MacBook Air turned off or sleeping for at least 5 hours.
9. Reattach the power cord.
10. Turn on MacBook Air and leave the AC cable attached until the battery is fully charged.
It's best
to leave MacBook Air in its fully charged state for at least 2 hours.
Apple claims that its notebook batteries are designed to keep up to 80 percent of their original charge even after 300
cycles.
Replacing the Battery
If your MacBook Air's battery won't charge, or if it runs down very quickly when you're running without outlet
power, it's time to yank out the old battery and replace it with a new one. On other Apple notebooks, such as the
PowerBook, iBook, MacBook, or MacBook Pro, the battery is what Apple describes as a user-installable fea-
ture. That's because on all those models, it's fairly easy to remove the existing battery and replace it with a new
one. They all include some kind of latch or lock that you can easily release to get at the battery.
Unfortunately, that's not the case with MacBook Air, which doesn't come with a battery-release mechanism. In-
stead, you must remove either 15 or 19 (depending on your version of MacBook Air) screws to get at and re-
lease the battery. It's not exactly something routine you'll do on the morning train, but it's not difficult either —
just tedious.
