taq93

macrumors newbie
Original poster
Nov 4, 2013
1
0
Hi, so i just got my 13'' macbook pro 2.4ghz 256gb 8gb ram and to my dissapointment the battery indicator for this guy only shows about 6 hours of battery life after a full charge.
now, when theres 74% left, battery indicator is showing 4:30 left.
Apple promised 9 hours and i was hoping to get at least 7-8 hours of battery.
I'm only doing stuff on pages and some web browsing...shouldnt i get that amt of battery life at least? My screen brightness is 5 bars.
Hoping someone would give an answer to this. thanks a lot!!!
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
Hi, so i just got my 13'' macbook pro 2.4ghz 256gb 8gb ram and to my dissapointment the battery indicator for this guy only shows about 6 hours of battery life after a full charge.
now, when theres 74% left, battery indicator is showing 4:30 left.
Apple promised 9 hours and i was hoping to get at least 7-8 hours of battery.
I'm only doing stuff on pages and some web browsing...shouldnt i get that amt of battery life at least? My screen brightness is 5 bars.
Hoping someone would give an answer to this. thanks a lot!!!

The "time remaining" indication is an ever-changing estimate, based on the current workload of your system. It will fluctuate up and down from minute to minute as your power demands change. It is not perfectly accurate, but only an estimate. The only meaningful measurement is how long you can run on battery from a full charge to shut down while running your normal workload.

There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the following link for details, including tips on how to maximize your battery life.
The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
 

OSMac

macrumors 65816
Jun 14, 2010
1,451
6
Hi, so i just got my 13'' macbook pro 2.4ghz 256gb 8gb ram and to my dissapointment the battery indicator for this guy only shows about 6 hours of battery life after a full charge.
now, when theres 74% left, battery indicator is showing 4:30 left.
Apple promised 9 hours and i was hoping to get at least 7-8 hours of battery.
I'm only doing stuff on pages and some web browsing...shouldnt i get that amt of battery life at least? My screen brightness is 5 bars.
Hoping someone would give an answer to this. thanks a lot!!!

Same model showed over 14 hours out of the box with less than a full charge remaining.... Yours sounds low?
 

chakdey

macrumors regular
Aug 9, 2008
103
73
There was article on MR not to long ago about how to improve your battery life for MacBooks, anyone have the link for that? I cant find it any where. :confused:
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
There was article on MR not to long ago about how to improve your battery life for MacBooks, anyone have the link for that? I cant find it any where. :confused:
There are many factors that impact your battery life. See the BATTERY LIFE FROM A CHARGE section of the Read post #2 and the link.
Have you calibrated the battery?
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.
 

DaRealElvis

macrumors member
Feb 24, 2011
31
0
I had the same problem! I called the hotline and they told me to press "alt" + "shift" + "power button" while laptop is shut down. Since than it shows me 10 hours when 100% charged. I still get like 6 hours out of it with normal use (just chrome and word) and I need to crank up the brightness. With normal sunlight in the train, etc. I see nothing with lower brightness settings. I am a bit underwhelmed, but I was told that 6 hours with normal use and almost full brightness is normal.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,468
854
I had the same problem! I called the hotline and they told me to press "alt" + "shift" + "power button" while laptop is shut down.
That's not the proper way to reset the SMC.

Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
  1. Shut down the computer.
  2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
  3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
  4. Release all the keys and the power button at the same time.
  5. Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
 
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