Stack Exchange Network
Stack Exchange network consists of 181 Q&A communities including
Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Visit Stack Exchange
Ask Different is a question and answer site for power users of Apple hardware and software. It only takes a minute to sign up.
Sign up to join this community
Anybody can ask a question
The best answers are voted up and rise to the top
10 years, 11 months ago
I have a 2011 MacBook. Along the left edge (looking at it from the normal typing position), near the front, there is a small silver button which is flush with the rest of the case. When pressed, a small series of tiny lights beside it flash green before going dark again. Nothing else happens.
Can anyone explain what this button does?
Apr 4, 2012 at 7:06
This is your
battery capacity indicator. The number of lit dots indicates how much battery you have left.
Apr 4, 2012 at 7:08
Kyle Cronin Kyle Cronin
23k 21 21 gold badges 82 82 silver badges 142 142 bronze badges
It's a battery capacity indicator, as noted in this
Apple Support KB:
The battery indicator lights are located along the left side of the
computer. This allows for quick and easy verification of the battery's
charge status while the computer remains solidly in-place.
When you press the battery indicator light button, the corresponding
flashes (or pattern of flashes) presents either the current charge
status or a diagnostic status.
The KB also has a chart of the behavior shown when the indicator is pressed.
Apr 4, 2012 at 7:10
5,114 2 2 gold badges 20 20 silver badges 36 36 bronze badges
This allows to check the charge of your battery. When the battery is full all the green lights should flash.
Apr 4, 2012 at 7:09
Cedric H. Cedric H.
1,413 5 5 gold badges 15 15 silver badges 33 33 bronze badges
log in to answer this question.
Not the answer you're looking for? Browse other questions tagged
By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our
Accept all cookies
Necessary cookies only